MH 034 00 Ecomaster Comfort Service Manual

8/9/2019 MH 034 00 Ecomaster Comfort Service Manual

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MH-034-00-ecomaster comfort service manual Edition 11/04

Ecomaster Comfort

ECOMASTER COMFORT

SERVICE MANUAL


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OWNERS MANUAL

1.- DESCRIPTION OF OPERATION.

1.1 Switching the driver climatization unit on and off.1.2 Adjusting the driver unit selected temperature.1.3 Adjusting the driver unit fan speed.1.4 Adjusting the driver unit air recirculation flaps1.5 Adjusting the driver unit floor/windscreen flaps1.6 Setting the driver climatization unit to automatic.1.7 Switching the passenger climatization unit on and off.

1.8 Adjusting the passenger unit selected temperature.1.9 Adjusting the passenger unit evaporator fan speed.1.10 Adjusting the passenger unit air recirculation flaps.1.11 Setting the passenger climatization unit to automatic1.12 ECO Option.1.13 Programming the clock.1.14 Pre-heater.1.14.1 Programmed mode.1.14.2 Normal mode.

1.15 Inside temperature display.1.16 Reheat Option.1.17 Operating in Sleeping mode.1.18 Adjusting screen contrast.

2.- AUTOCHECKING. ERROR CODES.

INSTALLERS MANUAL

3.- INSTALLING AND CONNECTING THE UNIT.

3.1 Installing the unit.3.2 Connecting the unit.3.3 Electrical connections of the components. Driver unit node.3.4 Electrical connections of the components. Passenger unit node.


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4.- CONFIGURATION OF THE POT CLIMATIZATION SYSTEM4.1 Automatic POT.4.2 Manual POT.

5.- OPERATING MODES.

SERVICE MANUAL AND TECHNICAL SERVICE

6.- DIAGNOSIS AND DISPLAY.7.- CHECKING THE SENSORS

8.- CHECKING THE KEYPAD

9.- SPARES REFERENCES


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1. Description of operation.

The fascia of the Ecomaster Comfort has three distinct control areas:

Driver Climatization Unit functions Shared functions Passenger Climatization Unit functions

When reference is made to climatization functions for the driver unit, the keypad is the one on this side and similarlyfor the passenger unit.

In the central part of the control panel is a display screen which informs the driver about its operation.

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2 5

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8 13 16

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Normally the Ecomaster Comfort operates in automatic mode, that is, the climatizer itself selects the air speed,

the position of the flaps and the functioning of the rest of the components of the climatization so that itsfunctioning is optimum.

In these operating conditions, the automatic screen will be displayed indicating the outside temperature and theimage of a bus with the selected temperatures for driver and passenger systems. In addition, the two LEDslocated next to the keys (3),(15) will light up indicating automatic operation.

Automatic screen

Nevertheless, the driver can decide to change the operation of any of the systems components at any time.

Each time the speed of the fans or the driver or passenger unit flaps are changed manually or the ECO, reheat orpre-heater functions are pressed, the manual screen will appear showing the symbols of the components whichare functioning in manual mode.

Manual screen.

1.1 Switching the driver climatization unit on and off.

The controls come on automatically as soon as the vehicle is started up. At this point a check is made of all thesystems and the following message is displayed on the screen:

Initial check screen.

Immediately after making this check, the automatic operation screen will be displayed, with the temperaturessaved the last time the climate unit was switched off.


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Automatic screen.

If the check detects an error, the error screen will be displayed (see section: Detection and Indication of Errors).

It is possible to switch on the climatization system by pressing the (3) key, even though the engine is stopped,providing the ignition switch is on. Since in this situation the battery is not charging, only the drivers heater andventilation will operate with the minimum fan speed.

You can switch off the driver climate unit manually by holding down the (3) key for 2 seconds. It will beindicated on the following screen.

Driver climate unit off screen.

1.2 Selecting the driver unit temperature.

To select the desired temperature for the driver unit, press the (2) or (1) keys.

If the passenger climatization unit is on, the selected temperature for the driver unit can be between +3 C (5 F)and 3 C (5 F) of that selected for the passengers area. This means, if the selected passengers areatemperature is 22 C (72F), the driver can choose between 19 and 25 C (66 and 77F).

If the passenger climatization unit is off, the above limit does not apply and the driver can select any temperaturebetween 17 C (63 F) and 27 C (82 F).

The upper limit for the driver temperature is HI and in this position the heating will operate at maximum powercontinuously. The lower limit is LO and in this case the air conditioning will operate at maximum powercontinuously.


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1.3 Selecting the driver unit s fan speed.

To adjust the fan speed of the driver unit, press the (4) and (5) keys.

The driver unit fan speed can be selected between 5 levels. If you adjust the automatic speed setting selected bythe Ecomaster Comfort, the new speed selected will be displayed on the screen and the red LED next to the(3) key will go off.

The selected speed can range from 1 to 5, with the following limitations:

If the engine is not running, only speed 1 is possible.

If it is set to reheat, speed 5 will be selected automatically.

If the compressor is on, the speed will never be lower than 3 to prevent the evaporator freezing.

If the driver climate unit is off and the passenger climatization unit needs the compressor to switch on, thedrivers fans will come on at speed 2 to prevent the evaporator freezing.

When the speed of the fans of the driver climate unit is adjusted manually, the Manual screen will be displayed.

Manual screen (drivers fan).


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1.4 Adjust ing the dr iver uni t ai r recirculation flaps.

If the driver node is set to climatization, the position of the recirculation flaps can be adjusted using the driver unitkey (6). You can select either air from outside (renewal) or inside (recycling).

When the recirculation flaps are adjusted manually, the following display will appear on the screen:

Manual screen outside air Manual screen inside air.

1.5 Adjust ing the posit ion of the driver unit floor/w indscreen f laps.

If the driver node is set to climatization, the position of the floor/windscreen flaps can be adjusted using the (7)key.

When the position of the floor/windscreen vents is adjusted manually, the following display will appear on the

screen:

Air to drivers feet Air to screen. Air to feet and screen

1.6. Setting the driver climate unit to automatic.

If the position of the driver unit recirculation flaps, floor/windscreen flaps, or the speed of the defroster areadjusted manually, or if the pre-heater, defroster or ECO mode are manually switched on, the driver climate unitchanges to manual mode, and the LED located next to the (3) key goes off.


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By pressing driver unit key (3) all the driver unit controls are switched back to automatic and, if the passengernode is also set to automatic, the automatic screen appears as shown below.

Automatic screen.

1.7. Switch ing the passenger climatization unit on and off.

The controls come on automatically as soon as the vehicle is started up.

It is possible to switch on the climatization system by pressing key (15) even though the engine is stopped,providing the ignition is on. Since in this situation the battery is not charging, in order to prevent it going flat, it willnot be possible to switch on the fan and you will only be able to have heating with the convector system.

The passenger node can be switched off manually by holding down key (15) for 2 seconds. In this case, thepart of the screen corresponding to the passenger unit will remain blank.

Screen with passenger climatization off

1.8. Adjusting the passenger uni t selected temperature.

To adjust the desired temperature in the passengers area, press keys (16) and (17) .

The selected temperature can be between 17C (63F) and 27C (82F).

The upper passenger unit temperature limit is HI and in this position the heating will operate at maximum powercontinuously. The lower limit is LO and in this case the air conditioning will operate at maximum power

continuously.


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1.9. Adjusting the speed of the passenger unit evaporator fans.

To adjust the speed of the evaporator fans, press passenger unit keys (13) and (14).

The selected speed can range from 1 to 5, with the following limitations:

If the engine is not running, no speed can be switched on.

If only the driver climatization unit is on and the compressor is switched on, speed 2 will automatically beswitched on in the passenger unit.

If key (9) is pressed, speed 2 will come on.

If the compressor is operating the speed cannot be lower than 3.

When the speed of the evaporator fans is adjusted manually, the Manual screen will be displayed.

Manual screen (evaporator fans).

1.10. Adjusting the position of the passenger unit air recirculation flaps.

If the passengers climatization is on, the position of recirculation flaps can be adjusted using passenger unit key(11).

The flaps will alternate between the positions for outside air (Renewal) and inside air (Recirculation), with thefollowing limitations:

If you have pressed key (9), the recirculation flaps will be set to outside air.

If the vehicle does not have roof heating installed, the flaps will be in the inside air (recirculation)position if the temperature inside is more than two degrees below the selected level.

If the inside temperature does not exceed the selected temperature minus 2C for more than 4minutes, the flaps will automatically reset to the recirculation position.


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When you adjust the position of the recirculation flaps manually the manual screen will be displayed.

Passenger outside air screen. Passenger inside air screen.

1.11. Setting the passenger climatization uni t to automatic.

If the position of the passenger unit recirculation flaps or the speed of the evaporator fans are adjusted manually,or if the pre-heater, defroster or ECO mode are selected manually, the passenger climatization will switch tomanual and the LED located next to key (15) will go off.

By pressing passenger key (15) all the settings return to automatic and, if the driver node is also set toautomatic, the automatic screen is displayed indicating the outside temperature and the one selected for thedrivers area and that of the passengers.

Automatic operation screen.

1.12. ECO Option

The ECO option allows the driver to switch off the compressor of the air-conditioning unit in atmosphericconditions in which its use is not regarded as necessary. While the ECO option is on it is not possible to switch on

the compressor.To switch on the ECO option, press the (12) key.

This option is switched off by re-pressing the (12) key or pressing the driver or passenger unit keys(3),(15).

If you press the defrost key (9) while the ECO option is on, it will be switched off.

When you select the ECO option, the following Manual screen will be displayed.

ECO Manual screen


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1.13. Programming the clock.

At any time, if you press down key (12) for2 seconds, the screen changes to the clockprogramming function.

Here the screen will appear as shown below, allowing the setting of the day of the week, hour and minutes.

Day/time programming screen.

With the driver unit (1) and (2) keys, we can select the day, the hour or the minutes which will appear onthe screen against a dark background, while the passenger keys (16) and (17) allow us to adjust thesettings of the chosen field.

Confirmation of the time programmed is given by pressing key (3),(15) or by simply letting a few seconds pass

without pressing any keys. Once the time has been validated in this way the screen will return to the previousdisplay.

1.14. Pre-heater.

The pre-heater offers two operating modes: programmed or normal mode.

1.14.1. Programmed mode.

The pre-heater can be programmed to come on twice in days and time. Each of the programmes sets the dayand time when we want the bus to be warm (the controls calculate what time the pre-heater needs to come on inorder to do so).

To enter programming, press the (8) key for 2 seconds, and you will enter the screen for the first program. Ifyou press for another 2 seconds, you will enter the screen for the second program. Each of these screens ahs aflame symbol with a number which indicates if it is program 1 or 2.

Pre-heater program screen


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Use the driver unit (1) and (2)keys to move between the fields of day, hour, minutes and Activation. Theselected field will be highlighted in bold as shown in the drawing.

With passengers keys (16) and (17) you can adjust the settings of the selected field.

You can program any day from Mondayto Sunday or 7 days (for all the days of the week).

The programs for a single day are erased once completed (they are set to OFF). Those for 7 daysremain atAUTOfor the following day.

Once the day and time have been set, the program has to be Activated. To do this you have to place the cursorover the Activate field and adjust it from OFFtoAUTO by using passenger keys (16) and (17).

If you want to switch off a program, you simply go into the programmed pre-heater mode and change theActivate field fromAUTO toOFF.

The pre-heater program always operates as long as we are not in diagnostic mode.

The programmed pre-heater indication will appear on the screen when the batteries are switched off. On thescreen a hollow flame symbol appears with the number 1 (program 1) and/or a hollow flame with number 2(program 2).

Pre-heater programmed screen.

If the pre-heater is operating because one of the programs switches it on, the flame of the corresponding symbolis shown filled in.

Pre-heater screen operating in programmed mode.

NOTE: The pre-heater will not come on if the outside temperature is above 15C.


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1.14.2. Normal mode.

In normal mode, the pre-heater either operates automatically as a support for the heating system or elsemanually during a time determined by the user.

If you press key (8) for a short time you enter the pre-heater screen. In this screen, the flame symbol indicatesif it is operating (flame filled in), whether in normal or programmed mode, or if it is switched off (hollow flame). If itis working in normal mode, a counter will appear with the operating time remaining.

Pre-heater Activation screen.

Using the drivers keys (1)and (2) you select the operating modeof the pre-heater (AUTO, ON or OFF).For the ON option, you can select a time for the heater to come on using passenger keys (16) and (17).

Mode Description

AUTO The pre-heater comes on if it is necessary and the outside temperature is below 15 or theoutside sensor is broken.

ON The pre-heater comes on for the selected time, (unless you are in diagnostic mode) and then

returns to AUTO mode. If you select the MAX time, the pre-heater continues to operate for 2hours after the motor of the vehicle has stopped.OFF Switches off the pre-heater whether in AUTO or ON mode

Once the ON mode is selected, after a few seconds the screen will show the pre-heater operating symbol.

Pre-heater operating screen in ON mode.

To see how much longer the pre-heater is programmed to operate, simply press briefly key (8) and the screenbelow will appear in which the time remaining will be displayed below the illuminated flame symbol.

Pre-heater time remaining screen.


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1.15. Inside temperature display.

With the batteries cut-off on, press key (10) to view the real inside temperatures in the drivers and passengersareas.

Inside temperatures screen

After a few seconds, the screen returns to the display shown before pressing key (10).

1.16. Reheat option

If you want to demist the windows, both in the drivers and passengers areas, you use the reheat option.

You switch on the reheat option by pressing key (9) when the panel is in climatization mode, that is, it onlyworks if the vehicles engine is running.

Demisting lasts 15 minutes and can be switched off at any time by re-pressing driver or passenger keys (9) or

(3), (15).

The Manual screen appears when you switch on the reheat option.

Manual screen for defrosting

NOTE:if you press key (9) while the ECO option is on, this will be switched off, since the compressor has tocut in for defrosting.


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1.17. Operating in Sleeping mode

If the panel is in Sleeping mode (with the vehicles battery main switched off) a screen will display the followingelements:

The time of the system.

If the pre-heater is on, the pre-heater connected flame .

If there is a pre-heater program selected, the flame of the pre-heater with the program number (1 or 2).

The battery symbol if the battery level is low.

Sleeping screen

1.18. Adjust ing screen contrast.

By simultaneously pressing keys (9) and (10) for 2 seconds, you enter the contrast adjustment screen:

Contrast adjustment indicator screen.

With passengers keys (16) and (17) you can increase of decrease the contrast setting between 15 and

62.


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2. Autochecking. Error codes.

When the system receives the signal from the battery cut-off (+30), it checks its outputs, to check which elementsare switched on and if there is a short circuit. It also checks the state of the temperature sensors.

While this check is made the screen looks like this:

Initial check screen.

If any type of anomaly is found, the errors and warnings screen appears as shown below.

Errors and warnings screen.

In the attached tables you can see the codes corresponding to each of the detectable problems:

Error codes.

N Message Description

1 DINT Short or Open in the driver unit inside sensor2 DICE Short or Open in the driver unit ice sensor3 DCHN Short or Open in the driver unit channel sensor4 EXT Short or Open in the driver unit outside sensor5 DHB Short in the air heater output (driver)6 DV1 Short in the defroster output ON/OFF speed 1 (driver)7 PMP Short in the main pump output (driver)

8 PRE Short in the pre-heater output (driver)9 DS1 Short in the additional front staircase heater output speed 1 (driver)10 DS2 Short in the additional front staircase heater output speed 2 (driver)11 DV2 Short in the defroster ON/OFF output speed 2 (driver)12 DV3 Short in the defroster ON/OFF output speed 3 (driver)13 DFV Short in the defroster valve output (driver)14 DHV Short in the heating valve output (driver)15 FWF Short in the floor/windscreen flaps output (driver)16 DRF Short in driver recirculation flaps output17 DFB Short in the defroster fans output (driver)18 FXX Pre-heater error number XX


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19 D+30 No +30 signal in driver20 PINT Short or Open in passenger unit inside sensor21 PCHN Short or Open in passenger unit channel sensor22 PICE Short or Open in passenger unit ice sensor23 WTR Short or Open in water sensor (passengers)24 CMP Short in compressor output (passengers)25 FP Short in recirculation pump output (passengers)26 PV2 Short in evaporator ON/OFF speed 2 output (passengers)27 PV1 Short in evaporator ON/OFF speed 1 (passengers)28 PS1 Short in additional rear door heater speed 1 (passengers)29 PS2 Short in additional rear door heater speed 2 (passengers)

30 C1 Short in condenser ON/OFF output (passengers)31 PV3 Short in evaporator ON/OFF speed 3 output (passengers)32 PRV Short in roof valve output (passengers)33 PHV Short in floor valve output (passengers)34 PRC Short in passenger unit recirculation flaps output35 RB Short in evaporator right flaps output (passengers)36 LB Short in evaporator left flaps output (passengers)37 CB Short in condenser fans output (passengers)38 PRVN Detect omitted as roof valve not detected (passengers)39 PHVN Detect omitted as floor valve not detected (passengers)40 FPN Detect omitted as recirculation pump not detected

Warning codes:

N Message Description

1 POT? Inconsistency between POT selected and configuration detected2 RAD Short or Open in radiation sensor (driver)3 DFBN No charge in defroster fans PWM (passengers)4 RH Short or Open in humidity sensor (passengers)5 PRBN No charge in right evaporator fans PWM (passengers)6 PLBN No charge in left evaporator fans PWM (passengers)7 CBN No charge in condenser fans PWM (passengers)


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3. Installing and connecting the unit .

3.1. Installing the unit .

The Ecomaster Comfort consists of two elements: the driver node and the passenger node.

Driver node Passenger node

To install the driver node in the dashboard it is necessary to prepare an opening 180.5 x 53.5 mm.

The dimensions of the unit are given below.

To install the passenger node, you must take into account the position of the mounting bore holes shown in thediagram.


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At the back of the units there are four Junior Power Timer AMP connectors with 6, 9, 18 and 21 pins.


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3.2. Connecting the unit .

We will now explain the function of each of the terminals of the Ecomaster Comfort connectors

In the tables you will find the following abbreviations:

V:Voltage to which the output is connected. The output can take power from the Vcc1 (+MCS) or Vcc2(+30) input

In:Nominal intensity allowed in the output.

Ip:Maximum peak intensity in the output on start up (250ms).

Dcarga:Minimum load in Amperes for the system to detect that there is a device connected to this output.

NOTE: If the device to be connected to a particular output exceeds the maximum consumption allowed at thisoutput indicated in In, it will be necessary to install a relay between the CPU and the device, otherwiseirreversible damage will be caused to the electronics.

Driver Node. Connector o f power supp ly and communication between the nodes: NC1D, 9 pins:

Pin Name Function V I n

1 GND Power supply ground (GND) 0 V 5A2 CAN1L Communication Nodes 5 V 100 mA3 CAN1H Communication Nodes 5 V 100 mA4 +MCS Positive Power Supply (Vcc1) 16-32 V 10 A5 +MCS Positive Power Supply (Vcc1) 16-32 V 10 A6 INPUT4 Engine running Vcc1 Active H7 +30 Positive Power Supply (Vcc2) 16-32 V 10 A8 +30 Positive Power Supply (Vcc2) 16-32 V 10 A9 +30 Positive Power Supply (Vcc2) 16-32 V 10 A

Passenger node. Connector of power supply and communication between the nodes: NC1P, 9 pines:


1 GND Power supply ground (GND) 0 V 5 A2 CAN1L Communication Nodes 5 V 100 mA3 CAN1H Communication Nodes 5 V 100 mA4 +MCS Positive Power Supply (Vcc1) 16-32 V 8 A5 +MCS Positive Power Supply (Vcc1) 16-32 V 8 A6 AUTO Autopot 0 V Active L7 +30 Positive Power Supply (Vcc2) 16-32 V 8 A8 +30 Positive Power Supply (Vcc2) 16-32 V 8 A

9 +30 Positive Power Supply (Vcc2) 16-32 V 8 A


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Both Nodes. Reprogramming connector: NC2D and NC2P, 6 pins:

Pin Name Function V I n1 PROG1 Reprogramming 0-5 V 2 mA2 -485 Reprogramming 0-5 V 2 mA3 +485 Reprogramming 0-5 V 60 mA4 PROG2 Reprogramming 0-5 V 2 mA5 GND Power Supply Ground (GND) 0 V 5 A6 GND Power Supply Ground (GND) 0 V 5 A

Driver node. Connector of inputs and outputs: NC3D, 21 pins:

Pin Name Function V In Ip D. Load

1 TR2+ Recirculation flaps + +MCS 1 A 2 A 100 mA2 TR2- Recirculation flaps - +MCS 1 A 2 A 100 mA3 SAL3 Main pump +MCS 8 A 70 A 1 A4 VAL2+ Heater valve + +MCS 1 A 2 A 100 mA5 VAL2- Heater valve - +MCS 1 A 2 A 100 mA6 SAL4 Pre-heater +MCS 1,5 A 24 A -7 VAL1+ Defroster valve + +MCS 1 A 2 A 100 mA

8 VAL1- Defroster valve - +MCS 1 A 2 A 100 mA9 SAL1 Air heater +MCS 3,5 A 24 A 1 A10 TR1- Floor/window flaps - +MCS 1 A 2 A 100 mA11 TR1+ Floor/window flap + +MCS 1 A 2 A 100 mA12 INPUT3 Ret. Pre-heater +MCS Active High - -13 SAL7 Defroster Fan V2 +30 10 A 70 A 1 A14 INPUT1 Door open +MCS Active Low - -15 RTRP Return Floor/Window +MCS - - -16 SAL2 Defroster Fan V1 +30 10 A 70 A 1 A17 INPUT2 Door closed +MCS Active Pulse Low - -

18 PWM1 Defroster Fan PWM +30 0,1 A 3 A 1 V19 SAL6 Additional heater V2 / Compressor (1) +30 6 A 40 A 1 A

20 SAL5Additional heater V1 / Pressurestat High-Low(1)

+30 6 A 40 A 1 A

21 SAL8 Defroster Fan V3 +30 15 A 130 A 2 A

(1) In POTs 1,2,3 and 4, SAL5 and SAL6 correspond to additional Heater V1 and additional Heater V2respectively, and can give direct outputs. In POTs 5,6,7 and 8, SAL5 and SAL6 correspond to the high-lowpressurestat return and the compressor output of the driver respectively, and both must be connected to thecontrols through the relay.


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Ecomaster ComfortPassenger Node. Connector of inputs and outputs: NC 3P, 21 pins:

Pin Name Function V I n Ip D. Load1 VAL1+ Roof valve + +MCS 1 A 2 A 100 mA2 TR2- Recirculation flap - +MCS 1 A 2 A 100 mA3 TR2+ Recirculation flap + +MCS 1 A 2 A 100 mA4 VAL2+ Floor valve + +MCS 1 A 2 A 100 mA5 VAL1- Roof valve - +MCS 1 A 2 A 100 mA6 INPUT4 Pressurestat low +MCS Active High - -7 SAL2 Recirculation pump +MCS 3,5 A 40 A 1 A8 VAL2- Floor valve - +MCS 1 A 2 A 100 mA9 INPUT1 Door open +MCS Active Low - -10 SAL5 Extra heater V1 +MCS 5 A 40 A 1 A11 INPUT3 Pressurestat high +MCS Active High - -12 INPUT2 Door closing +MCS Active pulse Low - -13 SAL1 Compressor +30 8 A 70 A 1 A14 SAL4 Evaporator Fan V1 +30 1 A 8 A -15 SAL8 Evaporator Fan V3 +30 1 A 8 A -16 SAL6 Extra heater V2 +30 10 A 70 A 1 A17 SAL7 Condenser fan +30 1 A 8 A -18 SAL3 Evaporator fan V2 +30 1 A 8 A -19 PWM1 Right evaporator fan. +30 100 mA 3 A 1 V20 PWM2 Left Evaporator fan. +30 100 mA 3 A 1 V

21 PWM3 Condenser fan PWM +30 100 mA 3 A 1 V

Drivers Node. Connector for sensors and communication w ith chassis: NC 4D, 18 pins:

Pin Name Function V

1 CAN0H Communication chassis 5 V2 CAN0L Communication chassis 5 V3 RAD_SUPPLY Radiation input 5 V4 RAD Solar Radiation signal 5 V5 RAD_GND Radiation solar ground 0 V6 FILTRO_SUPL Supply filter 5 V

7 FILTRO Filter signal 5 V8 RVAL1 Defroster Return Valve Vcc19 - Not used -10 - Not used -11 - Not used -12 RVAL2 Heating Return Valve Vcc113 ICE T. Ice signal 5 V14 CHN T. Channel signal 5 V15 CHN_ICE_GND T. Channel and Ice ground 0 V16 EXT T. Outside signal 5 V17 INT T. Inside signal 5 V18 EXT_INT_GND T. Outside and Inside Ground 0 V


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Passenger Node. Sensor connector and Communication with chassis: NC 4P, 18 pins:

Pin Name Function V1 CAN0H Communication Chassis 5 V2 CAN0L Communication Chassis 5 V3 HUM_SUPPLY Humidity supply 5 V4 HUM Humidity signal 5 V5 HUM_GND Humidity Ground 0 V6 FILTRO_SUPL Supply filter 5 V7 FILTRO Signal filter 5 V8 RVAL1 Roof return valve Vcc19 QAIRE_SUPL Supply Air quality 5 V10 QAIRE Signal Air quality 5 V

11 QAIRE_GND Ground Air quality 0 V12 RVAL2 Floor Return valve Vcc113 ICE T. Ice signal 5 V14 CHN T. Channel signal 5 V

15 CHN_ICE_GNDT. Channel and IceGround

0 V

16 WAT T. Water signal 5 V17 INT T. Inside signal 5 V

18 WAT_INT_GNDT. Water and InsideGround

0 V

3.3. Electrical connection of components. Driver Node.

Supply.

Connector


NC1D 1 GND Ground supply (GND) 0 V 5ANC1D 4 +MCS Positive Supply (Vcc1) 16-32 V 10 ANC1D 5 +MCS Positive Supply (Vcc1) 16-32 V 10 A

NC1D 6 INPUT4 Motor running Vcc1 Active HNC1D 7 +30 Positive Supply (Vcc2) 16-32 V 10 ANC1D 8 +30 Positive Supply (Vcc2) 16-32 V 10 ANC1D 9 +30 Positive Supply (Vcc2) 16-32 V 10 A

The Ecomaster Comfort has three different voltage inputs all located in the 9-pin NC1 connector. Each of theseinputs has a specific function.

+MCS: NC1 Driver and Passengers Pos. 4 and 5.Connected to the Central Safety Control (on the batterybefore the main switch) it allows the climatizer to maintain its memory even when the main switch is off. Thefunctions associated with the pre-heater (switching on the pre-heater, valves and water pumps, air flaps anddriver unit additional heater fans) take their power from this supply.


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+30: NC1 Driver and Passenger Pos. 7,8 and 9. Connected after the battery main switch, it permits thesupply of the drivers climatization unit, additional front heater fans, evaporator and condenser fans, of thepassenger climatization unit, compressor and fans of the rear door heater.

INPUT 4: NC1 Driver Pos. 6. Connected to the alternator, it indicates if the engine is running and thebatteries charging. When there is voltage at this point, the Ecomaster Comfort switches on automatically, allowingall the climatization functions to operate

Ai r renewal f laps of the driver cl imate unit .

Connector

Pin Name Characteristic V In I p D.Load

NC3D 1 TR2+ Flaps + +MCS 1 A 2 A 100 mANC3D 2 TR2- Flaps - +MCS 1 A 2 A 100 mA

The renewal flaps are worked by an electric motor. This electric motor can be connected to the electronic systemin two different ways:

Directly to positions 1 and 2 of the NC3D connector which are outputs with reverse polarity. In this case,the electronic system stops providing power to the outputs 15 seconds after moving the flaps to the Closed orOpen position to avoid the motor overheating.

Through an inverter relay located in the relay box of the electrical unit which performs the inversion of

polarity functions. This inverter relay must be triggered by pin 1 of NC3D. In this case the motor will always bepowered.

Floor/windscreen flaps of the drivers cl imatization unit.

Connector Pin Name Characteristic V In I p D.LoadNC3D 11 TR1+ Flaps + +MCS 1 A 2 A 100 mANC3D 10 TR1- Flaps - +MCS 1 A 2 A 100 mANC3D 15 RTRP Floor/screen return +MCS - - -

The floor/windscreen flaps are operated via a motor with return of position which must be connected as explainedbelow:

Terminals 4 and 6 of the motor are connected to NC3D pins Pos. 10 and 11.

Terminal 2 of the motor, which is the return of the potentiometer which indicates the angle of rotation ofthe motor, is connected to Pos. 15 of NC3D.

Terminals 1 and 3 of the motor are connected to +MCS and GND.

NOTE:If upon checking the installation of the unit you find that the flaps are in the opposite position to thatdisplayed on the screen, you should switch over the cables of the motor which are connected to terminals 4 and6.


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Main pump of the climatization system.

Connector

Pin Name Characterist ic V In I p D.Load

NC3D 3 SAL3 Main pump +MCS 8 A 70 A 1 A

If the vehicle has a pre-heater, Pos.3 of NC3D is connected to the input of the pre-heater which operates thepump.

Valve of the drivers addi tional heater.

Connector


NC3D 4 VAL2+ Valve Heater + +MCS 1 A 2 A 100 mANC3D 5 VAL2- Valve Heater - +MCS 1 A 2 A 100 mANC4D 12 RVAL2 Heater return valve

For ON/OFF valves, the connection is made as follows:

Valve ON/OFF N.O. ( Normally open): NC3D Pos.4.

Valve ON/OFF N.C. ( Normally closed): NC3D Pos.5.

In the case of motorized valves with return of position, the connection is made as follows:

Connect terminals 4 and 6 of the motor to NC3D Pos. 4,5.

Connect terminal 2 of the motor, which is the valves return position, to NC4D Pos.12.

In addition, supply ends 1 and 3 of the potentiometer of the valve with GND and +MCS.

NOTE:If upon checking the installation you detect that the valve opens instead of closing or vice-versa, you must

switch over the cables of the motor which are connected to terminals 1 and 3.

Defroster water valve.

Connector Pin Name Characteristic V In I p D.LoadNC3D 7 VAL1+ Valve Floor+ +MCS 1 A 2 A 100 mANC3D 8 VAL1- Valve Floor- + MCS 1 A 2 A 100 mANC4D 8 RVAL1 Return Valve Floor


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Follow the same instructions as for the drivers additional heater valve.

Pre-heater.

Connector


NC3D 6 SAL4 Pre-heater +MCS 1,5 A 24 ANC3D 12 INPUT3 Return pre-heater

Fans of the drivers and front stair additional heaters.The Ecomaster Comfort allows the connection of the fans of the drivers (one speed) and front stair (two speed)additional heaters generally installed near the driver and in the stairs of the front doors respectively.

Connector Pin Name Characteristic V In I p D.LoadNC3D 9 SAL1 Air heater +MCS 3,5 A 24 A 1 ANC3D 19 SAL6 Heater staircase V2 + 30 6 A 40 A 1 ANC3D 20 SAL5 Heater staircase V1 +30 6 A 40 A 1 A

Fans of the drivers climatization unit.

The fans of the drivers climatization unit can be controlled by PWM in the case of motors without blades ordirectly from the Drivers Node if the motor has blades.

If you connect them directly to the electronic system, you must bear in mind the power consumption of themotors, since if they exceed the permitted level for the Nominal Intensity (In) shown in the table below, they mustbe operated via a relay.

For motors without blades and speed control via PWM, connect Pos. 18 of NC3D to thecorresponding terminal of the motor (V. VAR.). In this case there will be 5 air speeds.

For motors with blades with three speed resistance, Pos. 16, 13 and 21 are connected to themotor terminals corresponding to speeds 1, 2 and 3 respectively.

Connector Pin Name Characteristic V In I p D.LoadNC3D 18 PWM1 Defrost fan PWM +30 0,1 3 1 VNC3D 16 SAL2 Defrost fan V1 +30 10 A 70 A 1 ANC3D 13 SAL7 Defrost fan V2 +30 10 A 70 A 1 ANC3D 21 SAL8 Defrost fan V3 +30 15 A 130 A 2 A


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Close door and door open.

In order to facilitate the closing of the vehicles door when the climatization system is operating, the EcomasterComfort offers the possibility of closing the renewal flaps when the door closing control is operated. In this waythere will be no excess of pressure inside the vehicle and the doors will close smoothly.

In addition, in cold countries, an additional front staircase heater can be installed which has a second speedwhich comes on automatically when the front door is opened and it is cold outside, so that the heat does notescape from inside the vehicle.

To enjoy these options, you must connect the inputs of Close Door (Pos.17 of NC3D) and Door Open (Pos.14 deNC3D).

The GND (Ground) must reach these inputs when the button is pressed to close the door and during the time that

the door is open.

ConnectorPin Name Characteristic V In I p D.Load

NC3D 17 INPUT2 Close door Active pulse LNC3D 14 INPUT1 Door Open Active L

Temperature Sensors and comfort.

To function correctly, the Ecomaster Comforts Drivers Node requires 4 temperature sensors:

Inside temperature sensor: Mounted in the evaporator suction. This is the reference temperature for thedrivers area.

Channel temperature sensor: Located inside the drivers air distribution channel. It is responsible formaintaining a stable temperature in the air blown through the nozzles during the heating regulation.

Ice Sensor. Fitted between the battery and the evaporator fans. It will warn the system of the possibility ofice forming in the evaporator.

Outside temperature sensor: Located outside the vehicle.

Connector

Pin Name Function

NC4D 13 ICE Temp. Ice SignalNC4D 14 CHN Temp. Channel SignalNC4D 15 CHN_ICE_GND GND Channel and IceNC4D 16 EXT External Temp. SignalNC4D 17 INT Inside Temp. SignalNC4D 18 EXT_INT_GND Outside and Inside GND


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As an option, solar radiation sensors and sensors for detecting and indicating a dirty air filter can be fitted

Connector

Pin Name Function

NC4D 3 RAD_ SUPPLY Radiation supplyNC4D 4 RAD Solar radiation signalNC4D 5 RAD_GND Solar Radiation GroundNC4D 6 FILTRO_ SUPPLY Filter supplyNC4D 7 FILTRO Filter signal

Communication.

For communication between the driver and passenger nodes, the same as for the communication with thechassis, there are two CAN 2B lines which must be connected as shown below:

Connector

Pin Name Function

NC1D 2 CAN1 L Communication nodesNC1D 3 CAN1 H Communication nodesNC4D 1 CAN0 L Communication

chassisNC4D 2 CAN0 H Communication

chassis

3.4. Electrical connection of components. Passenger node.

Supply.

Connector Pin Name Function V I n

NC1P 1 GND Ground supply (GND) 0 V 5ANC1P 4 +MCS Positive Supply (Vcc1) 16-32 V 10 ANC1P 5 +MCS Positive Supply (Vcc1) 16-32 V 10 A

NC1P 7 +30 Positive Supply (Vcc2) 16-32 V 10 ANC1P 8 +30 Positive Supply (Vcc2) 16-32 V 10 ANC1P 9 +30 Positive Supply (Vcc2) 16-32 V 10 A

Auto POT.

The automatic detection of the heating system installed in the vehicle can be achieved by connecting the AUTOPOT terminal to ground. See the section on Configuration of the heating: POT.

Connector Pin Name Function V I nNC1P 6 AUTO Autopot 0 V Active Low


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Ai r renewal f laps of the passenger c limat izat ion unit .

Connector Pin Name Characteristic V In I p D.LoadNC3P 2 TR2- Flaps - +MCS 1 A 2 A 100 mANC3P 3 TR2+ Flaps + +MCS 1 A 2 A 100 mA

The air renewal flaps are operated by an electric motor. This motor can be connected to the electronic system intwo different ways:

Directly to positions 2 and 3 of the NC3P connector which are outputs with inversion of polarity. In thiscase, the electronic system stops supplying power to the outputs 15 seconds after having moved the flaps to theirclosed or open position to avoid the motor overheating.

Through an inverter relay located in the relay box of the electrical installation which performs the polarityinversion functions. This inverter relay must be triggered from pin 3 of NC3P. In this case the motor will always bepowered.

Passenger floor heating circuit water valve.

For Valves Connect ON/OFF as follows:

Valve ON/OFF N.O. ( Normally open): NC3P Pos.4.

Valve ON/OFF N.C. ( Normally closed): NC3P Pos.8.

In the case of motorized valves with return of position make the connections as follows:

Connect terminals 4 and 6 of the motor to NC3P Pos. 4,8. Connect terminal 2 of the motor, which is the return position of the valve, to NC4P Pos.12.

In addition, power is supplied to ends 1 and 3 of the valve motors potentiometer with GND and+MCS.

NOTE:If upon checking the installation you detect that the valve opens instead of closing or vice-versa, you mustswitch over the cables of the motor which are connected to terminals 1 and 3.

Connector Pin Name Characteristic V In I p D.Load

NC3P 4 VAL2+ Valve floor + +MCS 1 A 2 A 100 mANC3P 8 VAL2- Valve floor - +MCS 1 A 2 A 100 mANC4P 12 RVAL2 Return Valve Floor


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Passengers roof heating circui t water valve.

Proceed as for the driver unit additional heater valve.

Compressor.

Connector


NC3P 13 SAL1 Compressor +30 8 A 70 A 1 ANC3P 11 INPUT3 Pressurestat

HighActive H

NC3P 6 INPUT4 PressurestatLow

Active H

Connect the compressor directly to Pos.13 of NC3P.

The pressurestat return can be connected in two different ways:

Independent return for High and Low pressure: Connect the High return topos.11 of NC3P and Low topos.6 of NC3P. The error message and the performance of the system will depend on which pressurestat cutsoff.

Single return for both High and Low: connect to pos.6 of NC3P. In this case the error message will be HP-LP.

Passenger uni t addit ional heater.

Generally this heater is mounted in the staircase of the vehicles rear exit, as extra back-up to the heating systemin countries with extremely low temperatures in winter.

It has two fan speeds, the lower (V1) is for regulating the inside temperature of the vehicle in winter and thehigher speed (V2) comes on when the door is opened to create a curtain of air to prevent the cold air outsidecoming in.

Both speeds can be connected directly to the electronic control system without the need for a relay providing themotor does not exceed the maximum output load of 10 and 5 Amperes for V2 and V1 respectively.

Connector


NC3P 16 SAL6 V2 Heater +30 10 A 70 1 ANC3P 10 SAL5 V1 Heater. +30 5 A 40 1 A

Connector


NC3D 1 VAL1+ Valve Roof+ +MCS 1 A 2 A 100 mANC3D 5 VAL1- Valve Roof- + MCS 1 A 2 A 100 mANC4D 8 RVAL1 Return Valve Roof


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Speed of the evaporator fans.

Connector


NC3P 14 SAL4 Speed Evap1 +30 1 A 8 ANC3P 16 SAL6 Speed Evap 2 +30 1 A 8 ANC3P 15 SAL8 Speed Evap 3 +30 1 A 8 ANC3P 19 PWM1 Speed Var Rt. 0,1 A 3 A 1VNC3P 20 PWM2 Speed Var L. 0,1 A 3 A 1V

In the case of fans with blades, there are three speeds which can be achieved through theconnection of the fans, via relays, to positions 14,15 and 16 of NC3P.

For motors without blades with speed control through a PWM control there is a separate outputfor the right and left side of the vehicle and you connect the electronic control of a motor withoutblades to positions 19 and 20 of NC3P. When speed control is through PWM, you will have 5speeds.

Condenser fan speed.

Connector


NC3P 17 SAL7 Speed Cond. +30 1 A 8 ANC3P 21 PWM3 Cond. Fan PWM. 0,1 A 3 A 1V

The condenser fans can be connected via a relay to position 11 of NC3 with which youwill have a single speed

There is an alternative in the case of motors without blades which is to connect theirelectronic systems directly to pos.17 of NC3. In this way, the condenser fans can work at threedifferent speeds which are controlled at all times via the Ecomaster Comfort depending on theoutside temperature.


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Water recycling pump.

The recycling pump which is usually used in systems which have floor heating installed, is connected to pos. 7 ofNC3P providing the maximum load does not exceed 3.5 amps. Otherwise it will have to be connected via a relay.

Close door and door open.

In order to facilitate the closing of the vehicles door when the climatization system is operating, the EcomasterComfort offers the possibility of closing the renewal flaps when the door closing control is operated. In this waythere will be no excess of pressure inside the vehicle and the doors will close smoothly.

In addition, in cold countries, an additional passenger staircase heater can be installed which has a second speedwhich comes on automatically when the rear door is opened and it is cold outside, so that the heat does notescape from inside the vehicle.

To enjoy these options, you must connect the inputs of Close Door (Pos.12 of NC3P) and Door Open (Pos.9 ofNC3P).

The GND (Ground) must reach these inputs when the button is pressed to close the door and during the time thatthe door is open.

Temperature and comfort sensors.

To operate correctly, the Passenger Node of the Ecomaster Comfort requires 4 temperature sensors:

Inside temperature sensor: Mounted in the evaporator suction. This is the reference temperature for thepassenger cabin.

Channel temperature sensor: Located inside the passengers air distribution channel 1.5 metres from thelast turbine. It is responsible for maintaining a stable temperature in the air blown through the nozzles during theheating regulation.

Ice Sensor. Fitted between the battery and the evaporator fans. It will warn the system of the possibility ofice forming in the evaporator.

Water temperature sensor: Located in the heating unit.

Connector


NC3P 7 SAL2 Recycling Pump +MCS 3,5A 40 1 A

Connector Pin Name Characteristic V In I p D.LoadNC3P 12 INPUT2 Close door Active LNC3P 9 INPUT1 Door open. Active pulse L


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Connector Pin Name Function

NC4P 13 ICE Temp. Ice Signal

NC4P 14 CHN Channel Temp.SignalNC4P 15 CHN_ICE_GND Channel and Ice GNDNC4P 16 WTR Water Temp. SignalNC4P 17 INT Inside Temp. SignalNC4P 18 WTR_INT_GND Water and Interior GND

As an option, relative humidity sensors can be installed to detect and warn of dirty air filters.

Connector Pin Name Function

NC4P 3 HUM_ SUPPLY Humidity supplyNC4P 4 HUM Humidity signalNC4P 5 HUM_GND Humidity GroundNC4P 6 FILTRO_ SUPPLY Filter supplyNC4P 7 FILTRO Filter signal

Communication.

For communication between driver and passenger nodes, as in the communication with the chassis, there aretwo CAN 2B lines which must be connected in the following way:

Connector Pin Name FunctionNC1P 2 CAN1 L Communication nodesNC1P 3 CAN1 H Communication nodesNC4P 1 CAN0 L Communication

chassisNC4P 2 CAN0 H Communication

chassis

4. Configuration of the POT climatization system.

The Ecomaster Comfort can operate with two different types of climatization system which depend on the heatingelements installed in the vehicle and how these are installed.: roof heater batteries and floor convectors.

In addition, it can control air conditioning systems with an additional compressor for the drivers unit.

The indication of the type of heating system installed and whether the additional compressor has to be controlledby the Ecomaster is given by an internal variable called POT.

The Ecomaster Comfort allows for the following POTs:


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The POT system can be configured automatically or manually.

If manual configuration is chosen, it will not be possible to switch on the Ecomaster Comfort in climatization modeuntil the POT has been entered, since if this is not done, the control system does not know what it has to control.

If the POT configuration is in manual and no setting has ever been entered, when the panel is switched on, ascreen will be displayed indicating that the POT has to be programmed.

4.1. Automatic POT.

The Ecomaster Comfort can automatically detect the first 4 heating settings shown in the previous table, in whichcase we have to connect the AutoPot input (NC1P of the passenger node, pin 6) to GND.

For it to detect the system correctly, the recirculation valves and pump must be connected directly to the CPU,i.e., with no intermediate relays and their consumption must be above the values for downloads in the connectortable of NC3 input-outputs.

POT Description

1 Roof and floor heating in series via a single valve.A single compressor for driver and passengers.

2 Only floor heating.A single compressor for driver and passengers.

3 Roof and floor heating in parallel via two valves.A single compressor for driver and passengers

4 Only roof heating.A single compressor for driver and passengers

5 Roof and floor heating in series via a single valve.Two compressors, one for the driver and another for the passengers

6 Only floor heating.

Two compressors, one for the driver and another for the passengers7 Roof and floor heating in parallel via two valvesTwo compressors, one for the driver and another for the passengers.

8 Only roof heating.Two compressors, one for the driver and another for the passengers.


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POT ValveRoof

ValveFloor

Recirculation

Pump

Additional

Compressor1(FLOOR AND ROOF IN SERIES) NO SI SI NO

2(ONLY FLOOR) NO SI NO NO

3(FLOOR AND ROOF IN PARALLEL) SI SI INDISTINCT NO

4(ONLY ROOF) SI NO INDISTINCT NO

When the Ecomaster Comfort performs the first AutoCheck it memorizes the components detected and takes asits POT the one which corresponds to those components according to the previous table.

If no valve is detected by the control system it will select the POT 2 configuration (only floor heating system).If upon performing an AutoCheck the control fails to detect one of these elements which it had detectedpreviously, the corresponding error is displayed. (On the Error screen you will be able to see which heatingelements are missing). This error will correct itself by connecting the loads correctly or removing and replacingthe +MCS.

If upon performing an AutoCheck new loads are detected which had not been detected in the previous one, anew POT will be selected corresponding to all the loads detected in the last AutoCheck according to the previoustable.

4.2. Manual POT.

If we do not want the system to detect the type of heating installed automatically or if the type of heating does notcorrespond to any of those indicated in the table above, it will be sufficient to connect it to ground via pin 6 ofNC1P.

In this case we must tell the control system what type of heating is installed by selecting it on the variable POT inthe POT Selection screen (Diagnostic Menu).

The first time the System starts up, you are reminded via the screen message INSERT POT, that you mustprogram the POT in order for the system to start up.

To do this, you enter Diagnostic by simultaneously pressing keys (1),(16) + (2),(17) + (10). Once you

are in Diagnostic mode, you must go to the POT screen by pressing key (9). From this screen you select theright value by holding down key (9) while at the same time increasing or decreasing the POT value using thekeys (1), (16) and (2),(17).


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NOTE:Once the POT has been selected, if the climatizer loses the battery power supply, it will not be necessaryto reset it as it is stored in the systems memory. This must be borne in mind if an Ecomaster Comfort CPU ischanged from one vehicle to another with a different heating configuration. In that case, for the system to functioncorrectly, the new vehicles heating POT must be inserted manually.

5. Operating modes.

The Ecomaster Comfort has three different supply inputs all located on the 9-pin NC1 connector. Each of theseinputs has a specific function.

+MCS: Driver and Passenger NC1 Pos. 4 and 5.Connected to the Central Safety Control (On the battery,before the main switch). This allows the memory of the climatizer to be retained even when the main switch is off.The functions associated with the pre-heater (Switching on the pre-heater, valves and water pumps, air flap anddrivers additional heater fans) receive power from this supply.

+30: Driver and Passenger NC1 Pos. 7,8 and 9. Connected beyond the battery main switch. This permitspower supply to the fans of the driver climate unit, staircase fans, evaporator and condenser fans of thepassenger climatization unit, and the compressor and fans of the rear door heater unit.

INPUT 4: NC1 Driver Pos. 6. Connected to the alternator, it indicates whether the engine is running andthe batteries charging. When there is power to this point, the Ecomaster Comfort switches on automatically,allowing all the climatization functions to operate

An input is considered as having power if the voltage reading on the corresponding terminal is above 22VDC

Depending on the state of the supply in each of these three inputs, the Ecomaster Comfort will be in one of thesethree operating modes.

Sleeping:Power supply in +MCS but not in +30 or in the alternator input (INPUT4). The control is off andcan only perform pre-heater functions, maintain the memory and read the temperatures of the sensors. Noclimatization function is possible. You can enter the Diagnostic screen, but only those components connected to+MCS can be switched on (see tables of the functions of the connectors).

Wake-up:Power supply in +MCS and +30 but the alternator is stopped (motor stopped) so there is noinput in terminal 6 of NC1C. In these conditions the control is off, although certain driver climatization functionscan be switched on by pressing drivers key (3). Since the alternator is stopped and is not charging thebattery, the fans of the drivers Climatization Unit can only operate at minimum speed. You can enter theDiagnostic screen

Active:Power supply in +MCS, +30 and the alternator is charging the battery. The Ecomaster Comfortcan perform all the climatization functions, enter the Diagnostic menu and switch off.


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Mode +MCS > 22V +30 > 22V INPUT 4

Sleeping Yes No NoWake up Yes Yes NoActive Yes Yes Yes

In each mode the illumination is as follows:

Mode Screen Keypad Leds

Sleeping By pressing any key itwill light up for 30 secs.

Off Off

Wake up On permanently On Off

Active On permanently On On

6. Diagnosis and Display.

The Diagnostic and Display menus have been designed to allow the installation and service engineer to checkthe functioning of the climatization system components after the installation of the control or during maintenanceand repair operations.

The difference between the two is that the Diagnostic Menu operates each of the control outputs separately sothat the functioning of the various components can be checked.

The Display Menu, is used to see the state of each of the elements that the Ecomaster Comfort controls, while itis operating in climatization mode, without interrupting the temperature regulation and without it being possible forany of the components to operate (by switching on or off).

6.1. Diagnosis.

To enter Diagnosis mode, press drivers keys (1) + (2)+ (10)simultaneously for a few seconds.

To exit diagnosis mode, you simply need to press either of the two AUTO keys (6)

From this mode you can see the Driver, Passengers, Temperatures, Hard/Soft, POT Mode and Keys screens.To enter each of these you have to press the key which is shown in the diagram.


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(1) (2) (10)

When you enter the Diagnosis menu, initially the Driver screen appears.

(6) (11) (10) (8) (7) (10) (9)

.

The Driver and Passenger diagnostic screens present the information about inputs and outputs of each of theseareas of the vehicle in columns.

For each column, the first the first two letters correspond to the name of the input/output while the symbol beside thevariable indicates the state of this output, i.e. if it is on or off.

In addition, in the lower left hand part of the screen is a field which provides information about the selected variable.

The selected variable is highlighted in bold. To change from one output to another, press driver keys (1) and

(2), and to switch them on or off, press passenger keys (16) and (17).

(C) (P)

Diagnstico

Conductor Pasaeros Tem eraturas Hard/Soft Modo POT

+

Variables

Estado Informacin de lavariable


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6.1.1 Driver Diagnost ic screen

The following outputs are shown:

Variable Description Information on the variable. Possible states

FBDriver fan speed with PWM

If there is a short circuit in the output SHORT is displayedIf there is no load at the output NO LOAD is displayedIf it is operating correctly it displays the return voltage.

V1Driver fans ON/OFF Speed1

If there is a short circuit in the output SHORT is displayedIf there is no load at the output NO LOAD is displayedIf there is not a short circuit and there is load OK is indicated


If there is a short circuit in the output SHORT is displayedIf there is no load at the output NO LOAD is displayed

If there is not a short circuit and there is load OK is indicated



HBAdditional drivers heater


PMMain Pump


FV

Defroster ValveIf there is a short circuit in the output SHORT is displayedIf there is no load at the output NO LOAD is displayedIf there is a load but no return ON/OFF is displayedIf there is load and return of position, the return voltage isdisplayed

HV

Drivers additional heatervalve

If there is a short circuit in the output SHORT is displayedIf there is no load at the output NO LOAD is displayedIf there is a load but no return ON/OFF is displayedIf there is load and return of position, the return voltage isdisplayed

S1 / HL

Additional heater Speed 1(for POT 1,2,3,4) /Pressurestat (for POT5,6,7,8)


S2 / CP

Additional heater Speed 2(For POT 1,2,3,4) /Compressor (For POT

5,6,7,8)


PR

Activation of the Pre-heaterIf there is a short circuit in the output, SHORT is displayedIf there is no pre-heater return, NO RET is displayedIf there is no short circuit and there is a pre-heater return, OKis displayed

RCDrivers recirculation flap.

If there is a short circuit in the output SHORT is displayedIf there is no load at the output NO LOAD is displayedIf there is load OK is displayed

FW

Floor/windscreen flapIf there is a short circuit in the output SHORT is displayedIf there is no load at the output NO LOAD is displayedIf there is no return position NO RET is displayedIf there is load and return position, the return voltage isdisplayed

If the output isactivated.

If the output is notactivated.

S If the activation of theoutput is requested buta short circuit isdetected.

? If the output issupplied with +30(FB,HB,S1,S2) but thereis no +30 signal

The driver node inputs are listed in the following table:


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Variable Description State

DO Door open

GE Alternator charging.

RP Return pre-heater.

DC Door closing.

BT Battery.

30 +30 signal.

NP Communication with passenger node .

FI Dirty air filter

If the input is activated.

If the input is not activated.

TS Temperature scale C or F

Notes:

If an error is detected in the pre-heater, to the right of RP the corresponding error code is indicated.

Next to the TS label is the temperature scale. If the selected scale is in Celsius a C is displayed and if it isFahrenheit an F. You can switch between the two scales using passenger keys (16) and (17).

To the right of the Information on the variable field a letter D appears indicating that it is the Driver screen. .

6.1.2. Passenger Diagnostic screen.

If you are in Diagnosis mode and you press passenger key (11)the passenger diagnostic screen is displayed:

Passenger diagnostic screen.


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Ecomaster ComfortThe following outputs are shown:

Variable Description Information about the variable. Possible states

RB

Fan speeds of rightevaporator (PWM)

If there is a short circuit in the output, SHORT is displayedIf there is no load in the output, NO LOAD is displayedIf there is no short circuit and there is load, the return value isshown

LB

Fan speed of leftevaporator (PWM)


CB

Speed of condenser fans(PWM)


V1 Evaporator Fans Speed 1

If there is a short circuit in the output, SHORT is displayed

If there is no short circuit, OK is displayed (no load detectedbecause it is a relay output)

V2Evaporator Fans Speed 2

If there is a short circuit in the output, SHORT is displayedIf there is no short circuit, OK is displayed (no load detectedbecause it is a relay output)

V3Evaporator fans Speed 3


C1Condenser fans


CP

CompressorIf there is a short circuit in the output, SHORT is displayedIf there is no load in the output, NO LOAD is displayedIf there is no short circuit and there is load, OK is displayed

RV

Roof ValveIf there is a short circuit in the output, SHORT is displayedIf there is no load in the output, NO LOAD is displayedIf there is load and no return of position, ON/OFF is displayedIf there is load and return position, the return value isdisplayed.

HV

Floor ValveIf there is a short circuit in the output, SHORT is displayedIf there is no load in the output, NO LOAD is displayedIf there is load and no return of position, ON/OFF is displayedIf there is load and return position, the return value isdisplayed.

S1

Additional passenger

heater Speed 1

If there is a short circuit in the output, SHORT is displayed

If there is no load in the output, NO LOAD is displayedIf there is no short circuit and there is load, OK is displayed

S2Additional passengerheater Speed 2

If there is a short circuit in the output, SHORT is displayedIf there is no load in the output, NO LOAD is displayedIf there is no short circuit and there is load, OK is displayed

RCRecirculation flap


GCGas Charge


FPRecirculation Pump

If there is a short circuit in the output, SHORT is displayedIf there is no load in the output, NO LOAD is displayed

If there is no short circuit and there is load, OK is displayed

If the output isactivated.

If the output is notactivated.

S If the activation of theoutput is requested but ashort circuit is detected.

?If the output is suppliedwith +30 (RB, LB, CB,V1, V2, V3, C1, S2) butthere is no +30 signal


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Ecomaster Comfort

The driver node inputs are listed in the following table:

Variable Descript ion State

DO Door open

LP Low coolant pressure

HP High coolant pressure

DC Door closing.

BT Battery.

30 +30 signal.

FI Dirty air filter.

If the input is activated.

If the input is not activated.

Notes:

When you activate the gas charge (GC) mode, the evaporator and defroster fans operate at Speed 5 andthe condenser fans at Speed 3, permitting the posterior adjustment of these speeds.

A letter P to the right of the Information about the variable field indicates that it is the passenger screen.

6.1.3. Displaying extended temperatures

If the control unit is in diagnosis or display mode, by pressing key (10) you can switch to the extendedtemperatures screen.

Extended temperatures screen

On the left of the screen the following temperatures of the drivers area are displayed:

INT Inside sensorCHN Channel sensorICE Ice sensorEXT External sensor

RAD Solar radiation sensor (w/m2

)BAT Voltage of the driver node supply


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On the right of the screen the following temperatures of the passengers area are shown:

INT Inside sensorCHN Channel sensorICE Ice sensorWTR Water sensorHUM Humidity sensor (%HR)BAT Voltage of the drivers node supply

6.1.4 Hard-Soft version screen

Once in the diagnosis or display mode, if you push the key (9) the Hard-Soft version screen is displayed:

Hard-Soft version screen

6.1.5 POT mode screen.

When you are in diagnosis or display mode, if you press key (7), a screen appears indicating which POT isselected.

If auto-configuration is activated (AUTOPOT pin connected to Ground), it shows whether the roof valve (RV), floorvalve (HV) and/or recirculation pump have been detected and the POT which has been activated as a result.

Automatic POT screen

If POT is set to manual it can be modified by entering the MODE POT screen via diagnosis and display mode bysimultaneously pressing passengers keys (7)+ (16), to increase the setting of the POT or passenger keys

(7)+ (17)to decrease it.


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Manual POT screen

8. Checking the keypad

If the control unit is in diagnosis mode, if you simultaneously press keys (9) + (10) you will enter a screen for

checking the keypad.In the centre of the screen the word KEY appears together with the number of the key pressed.

Keyboard checking screen

To exit the keyboard checking screen, you have to press keys (9) + (10) again simultaneously.

6.2 Display Mode.

The Display Menu is used to see the state of each of the elements which the Ecomaster Comfort controls while itis operating in climatization mode, without interrupting the temperature control and without it being possible forany of the components to perform (switch on or off).

If the control unit is in climatization mode, if you simultaneously hold down passenger keys (11) and (17)for 3 seconds, you will change to display mode.

In order to exit display mode, simply press either of the two AUTO keys. (3), (15).

In this mode you can see the Driver, Passenger, Temperatures, Hard/Soft, POT Mode, Hour counter, Error andOperating Variables screens. To enter each of these screens, press the key shown in the diagram.

When you enter Display, initially the Driver unit screen appears.


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(16) (17)

(9)

(2)

(1)

(9)

(6) (11) (10) (8) (7) (12)

6.2.1 Working time screen

Once in Display mode, if you push key (12)a working time screen is displayedwhich tells you how longcertain elements have been operating.

Working time screen

On the left of the screen the following elements of the driver unit are displayed:

PM Hours the main pump has been operating

FV Thousands of actions of the defroster valve

HV Thousands of actions of the drivers additional heatervalve.

FB Hours the defroster fans have been operating

+

++

(P)

(C) (P)

Visualizacin

Conductor Pasajeros Temperaturas Hard/Soft Modo POT Cuenta horas

Variables detrabao

Errores


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6.2.1. Error screen

When one of the following errors occurs during the normal functioning of the system:

Communication error between nodes (COMM ERROR) High Pressure Error in the compressor (HP ERROR) Low Pressure Error in the compressor (LP ERROR)

The following screen will appear:

Error screens

In the event of any other type of error occurring, this will be displayed during the initial check and may beconsulted subsequently in the error screen in Display Mode by pressing key (9).

In section 2 you can see the significance of the various warning and error codes.


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7. CHECKING THE SENSORS.

All the temperature sensors of the Ecomaster Comfort are PTC1000 type.

To check the functioning of the temperature sensors you can use the attached table which indicates the relationbetween temperature and the resistance that must be measured between the sensor terminals.

Temperature C ResistanceOhms

-30 624,00-20 684,00-10 747,00

0 815,0010 886,0020 961,0030 1040,0040 1122,0050 1209,0060 1299,0070 1392,0080 1490,00

For values not found in the table you should calculate from the nearest values.

The measuring range of the sensors is from 30C to +80C.

To check the Relative Humidity sensor is functioning correctly, proceed as follows.

Check that the voltage between terminals n 3 and n 5 of the passenger node connector NC4P is 5 VoltsDC. Check that the voltage between terminals n 4 and n 5 of the passenger node connector NC4P isbetween 1 and 3 Volts approximately.

Inside temperature, channeland ice sensor

Outside temperature sensor.


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The solar radiation sensor is a diode and therefore can be checked as such by measuring between its ends witha multimeter in a position for measuring diodes. It should give a reading of between 0.5 and 0.6 volts in one

direction and closed circuit in the other.

Another possibility is to take it close to a light bulb and check the difference in voltage between the two ends,which should be between 0.1 and 0.2 Volts approximately.

9. SPARES REFERENCES

PASSENGGER NODE. 3200701

KEYBOARD NODE. 3200702 AIR TEMPERATURE SENSOR. 4150267 OUTSIDE TEMPERATURE SENSOR. 4150261 WATER TEMPERATURE SENSOR. 4150266 SOLAR RADIATION SENSOR 4150264 RELATIVE HUMIDITY SENSOR 4150263 DIRTY AIR FILTER SENSOR . 3100094


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(10)

(12)

(8)

(8)

(9) (10)

(3)(15) (3)

15

(6)

(13) (12) (11)

(10)

(8)

(7)

(12)

(9)

(6)

(11)

(10)

(8)

(7) (4) (5)

(4) (5)(9) (10)

(9)(10)

(4) (5) (10)

+30

C P

C(2s)

(2s)

+

(2s

Mensaj

Erro

C+ (C) (C)

+ (2s)

(C)

(P)

(2s+

(C)

(P)

P

(2s+ + (2s(C) (C)

+(2s

(C) (C)

C

P

P

+

Documents

MH 034 00 Ecomaster Comfort Service Manual