All iance ERROR CODES

Index

1. Fixed speed Vertu midwall units

2. Atlantic midwall units

3. Inverter midwall units

4. Fixed speed underceiling/cassette/ducted units

5. Inverter underceiling/cassette/ducted units

6. MAC Cassette units

7. Package units

8. Portable units

9. Water heaters

1

Alliance ERROR CODES

2

2. Atlantic Midwall units

Display FailureE1 Outdoor tube sensor faultE2 Room temp sensor open or shortE3 Indoor coil sensor open or shortE5 Indoor fan faultE6 EEPROM errorE7 External feedback fault - Check interconnecting wiringE8 Overheat detection / defrosting

3. Inverter midwall units

Display FailureE0 EEPROM errorE1 Indoor and outdoor communication errorE2 Zero crossing detection errorE3 Indoor fan errorE4 Indoor room temp sensor open or shortE5 Indoor coil sensor open or shortEC Refrigerant leak detectedF1 Outdoor temp sensor open or shortF2 Condensor coil sensor open or shortF3 Compressor discharge sensor open or shortF4 Outdoor EEPROM error P0 IPM malfunction or IGBT over currentP1 Over or under voltage protectionP2 Temperature protection of compressor top (normally short of refrigerant)P4 Inverter compressor drive error

1. Fixed speed Vertu midwall units

Display FailureE1 EEPROM errorE2 Zero crossing detection errorE3 Indoor fan errorE5 Room temp sensor open or shortE6 Indoor coil sensor open or shortEC Refrigerant leak detected

3

Indoor

Outdoor

4. Fixed speed under ceiling/cassette/ducted units

Display FailureE1 EEPROM errorE2 Zero crossing detection errorE3 Indoor fan errorE5 Room temp sensor open or shortE6 Indoor coil sensor open or shortEC Refrigerant leak detected

Oper. Time Def./Fan Alarm FaultFlash Drain pump or float switch

Flash Return air sensor open or shortFlash Indoor coil sensor open or shortFlash Flash EEPROM error

Flash Outdoor coil sensor open or shortFlash Flash Flash Flash Electrical abnormalityFlash Flash Flash Over current protection

LED 1 LED2 LED3 FaultFlash Phase rotation/phase missing error

Flash HP swith open circuitFlash Overcurrent protection

Flash Flash LP switch open circuitFlash Flash Flash High temperature of compressor discharge

(Short of gas)On On Normal operation

Flash Flash Outdoor ambient sensor open or short

5. Inverter under ceiling/cassette/ducted units

Display FailureE0 Communication between indoor and outdoorE1 Phase rotation/phase missingE2 Communication error between indoor unit and master unitE4 Outdoor temp sensor errorE5 Compressor discharge temp sensorE8 Outdoor unit address errorE9 Power volt errorH0 Communication malfunction between IR341 and 780034H1 Communication between 0537 or 9177 and 780034H2 Quantity of outdoor unit decreasesH3 Quantity of outdoor unit increasesH4 P6 protection detected 3 timesH5 P2 detected 3 times in 30 minutesH6 P4 detected 3 times in 100 minutesH7 Indoor unit decrease errorH8 Discharge pressure sensor errorH9 P9 detected 3 times in 30 minutesP0 Inverter compressor top temperature protectionP1 HP protectionP2 LP protectionP3 Inverter compressor current protectionP4 Compressor discharge temp protection (short of refrigerant)P5 Outdoor condensor high temp protectionP6 Inverter module protectionP7 Current protection No.1 Fixed compressorP8 Current protection No.2 Fixed compressorP9 Fan motor protectionL0 DC inverter module protectionL1 DC supply low voltageL2 DC supply high voltage protectionL4 MEC FailureL8 Frequency protectionL9 Frequency protection

4

5

6. MAC Cassette units

Display FailureE2 Room temp sensor failureE3 Coil temp sensor failureE4 Condensor sensor failureE5 Water pump temp sensorE6 Outdoor malfunctionE7 EEPROM malfunctionE8 Water-level alarm

7. Package units

Display FailureE0 Phase rotation/phase missingE1 Outdoor coil sensor in system AE2 Outdoor coil sensor in system BE5 Indoor coil sensor in system AE6 Indoor coil sensor in system BE9 Indoor temp sensor errorEA Outdoor ambient sensor errorEB Wire controller output errorP0 Overcurrent protection in system AP1 Overcurrent protection in system BP2 Overcurrent protection for outdoor fan P3 Comprehensive protection for outdoor fanP4 Protection for HP/LP or discharge temp in system AP5 Protection for HP/LP or discharge temp in system BP6 HP protection initiated inT2 evaporator stops the outdoor unit fanP7 HP protection initiated inT2 evaporator stops the outdoor unit fan and compressor

P8 Protection for condenser at high temp in system AP9 Protection for condenser at high temp in system BPC Anti-freezing protection for evaporator in system APD Anti-freezing protection for evaporator in system BPF Defrosting

6

8. Portable units

Display FailureHP HP alarmFt Full tray or full tankPf Probe failureLt Low tempE1 Room temp sensorE2 Evaporator temp sensorE3 Condensor temp sensorP1 Bottom tray is full

8. Water heaters (Retro fit)

Display FailureE1 Phase reversal/phase missing errorE2 Communication error between unit and wired control or sensor damagedE3 Outlet water temp sensor errorE4 Water temp sensor failure in the water tankE5 Condensor temp sensor errorE6 Outdoor ambient temp sensor errorE7 Sensor failure at water pump outletE9 T8 temp sensor errorEd Sensor failure at double pipe refrigerant outletP1 HP protection/air in system/pump not starting/no waterP2 System current protectionP4 Tt HP protectionP5 Condenser HP protectionP8 Protection for over temp at condenser outletP9 Anti-freezing protectionPb Anti-freezing protectionHO Indoor and outdoor units unmatched

7

Swimming pooll heaters

Display FailureE1 Phase rotation/phase missingE2 Outdoor unit and wire controller communication errorE3 Outlet water temp sensor errorE4 Inlet water temp sensor error E5 Evaporator pipe temp sensor errorE7 Ambient temp sensor errorE9 Water flow switch errorEE Discharge pipe temp sensor errorP0 Discharge pressure over-high protectionP1 Low pressure protectionP4 Compressor over current protectionP6 Evaporator over temp protectionPb Anti-freeze protectionPf Discharge temp protection (too high)

Integrated water heater

Display FailureE0 Error of sensor T5UE1 Error of sensor T5LE2 Tank and wired controller communication errorE4 Condensor pipe temp sensor errorE5 Outdoor ambient temp sensor errorE6 Sensor Tp errorE8 Electric leakage protectionLA Ambient temp is outside of range 5° _ 43°P0 Condensor pipe temp overflow protectionP2 High dicharge temp P3 Open compressor circuit protectionP4 Compressor overcurrent protectionP8 Open upper e-heater circuit protectionP9 Upper e-heater overloaded protectionPa Open lower e-heater circuit protectionPb Lower e-heater overloaded protection

Commercial water heater

Display FailureE1 Phase rotation/phase missingE2 Communication failure between wired remote and main unitE3 Outlet water temp sensor failureE4 Water temp sensor in the water tank failureE5 Condenser temp sensor failureE6 Outdoor ambient temp sensor failureE7 Electric heating pipe temp sensor failureEc Water inlet temp sensor errorEb Exhaust temp sensor error (TP temp)P0 System LP protectionP1 System HP protection (deficient circulating pump/pump faulty also possible)

P2 Current protection for system 2P3 Current protection for system 1P8 Protection for excessive high outlet water tempPb Anti-freezing protection

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