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5-1
DIAGNOSTICS & TROUBLESHOOTINGDIAGNOSTICS
Close the freezer door for a minimum
of 1 minute.
Open the freezer door.
Proceed to 2002Design Optics
Mode on Page 5-4.
LED is flashing at 1 secondintervals indicating a 5 minute
“harvest” mode.
LED is flashing 2 pulses repeated.
Hold in the freezer light switch.
Wait 5 minutes anduse 2002 Design Optics
Mode on Page 5-4.
Proceed to Original Design Optics
Mode on Page 5-2.
Yes
Yes
No
No
OPTICS DIAGNOSTICS MODEDiagnostics are used to determine whether theoptics circuits are operating properly. If theoptics circuits are malfunctioning, the ice makerwill not operate.
The optics system consists of an emitter boardand a receiver board. The emitter board trans-mits a beam of infrared light that is detectedby the receiver. If the beam of light is inter-rupted, the ice maker will not operate.
The optics system can have one of two typesof optics board designs installed: the originaldesign, or the 2002 design.
Use the following flow chart to determine whichof the board designs are installed. Once this isdetermined, you will be directed to perform theappropriate optics diagnostics procedure.
FLOW CHART TODETERMINE OPTICSBOARD DESIGN
5-2
3. Make sure the ice maker manual shutoffslide is in the “ON” (open) position on theinfrared receiver module.
4. Close the freezer door for a minimum of 10seconds.
5. Open the freezer door and activate thefreezer door switch 3 times. NOTE: Thisstep must be completed within 10 sec-onds of opening the freezer door.
6. Close the freezer door within 20 secondsof completing step 5.
7. Wait for a minimum of 5 seconds, and amaximum of 50 seconds, then open thefreezer door and view the status LED onthe infrared receiver module for the errorcode. NOTE: You will have 60 seconds toopen the freezer door, and 2 seconds fromthen to view the LED output code.
U-ShapedCutout
Infrared Emitter Beam
IceLevel
Freezer DoorLight Switch
If you observe two LED pulses (flashes), per-form the following steps.
1. Open the freezer door and remove the icebin from the door.
2. Make sure the ice maker manual shutoffslide is in the “on” (open) position.
3. Tape the spring-loaded emitter door to theemitter cover in the “down” position.
4. Close the freezer door for at least 10seconds.
Manual Shutoff Infrared Receiver Slide Sensor
OPTICS DIAGNOSTICS FORORIGINAL DESIGN BOARDSKIT #4388635 SUBS TO #4389102EMITTER—PART #2198585RECEIVER—PART #2198586To initiate an optics check, perform the follow-ing steps:
1. Open the freezer door.
2. Remove enough ice from the ice bin sothat the ice level is at least one inch belowthe U-shaped cutouts in the bin.
Status LED
5-3
5. Open the freezer door and actuate thefreezer door switch 3 times. NOTE: Thisstep must be completed within 10 sec-onds of opening the freezer door.
6. Close the freezer door within 20 secondsof completing step 5.
7. Wait for a minimum of 5 seconds, and amaximum of 50 seconds, then open thefreezer door, and view the status LED onthe infrared receiver module for the errorcode. NOTE: You will have 60 seconds toopen the freezer door, and 2 seconds fromthen to view the LED output code.
If the LED still flashes twice, there could bedirt or frost on the optics, something could beblocking the infrared beam path, or the opticsmay be defective. Clean the optic elements andrepeat the previous test.
If the LED does not flash, the ice maker mayhave been in a harvest, preventing the diag-nostics from being performed. Look at the icemaker to make sure the ejector is at the homeposition. If it is, wait 3 minutes, and try runningtest again. If the LED still does not flash, theoptics boards may be defective.
5-4
Manual Shutoff Slide
Infrared ReceiverSensor
OPTICS DIAGNOSTICS FOR2002 DESIGN BOARDSKIT #4389102EMITTER—PART #2220398RECEIVER—PART #2220402To initiate an optics check, perform the follow-ing steps:
1. Open the freezer door.
2. View the status LED. It should flash twice,pause for 1 second, and repeat the cyclefor as long as the door is open.
NOTES:
• If the LED is not flashing, the ice makermay be in the 5 minute “harvest” mode.If so, push in on the freezer door switchwith your finger, and observe the LED.It should begin to flash at 1 second in-tervals, and continue to flash for as longas you hold the door switch.
• If the LED does not flash, as describedabove, the original style optics boardsmay be installed. Perform the steps,shown in Chart A, on page 5-6.
3. Check the ice maker manual shutoff slideand make sure that it is in the “ON” (open)position on the infrared receiver module.
EmitterModule
4. Close the flapper door on the emitter mod-ule so that the infrared beam has a clearpath to the receiver board.
Door Shown In TheOpen Position
5. Make sure that the door switch is notpushed in, and view the status LED. Withthe flapper door on the emitter moduleheld closed, and the ice maker not in the 5minute “harvest” mode, the status LEDshould be on steady. This indicates thatthe optics circuits are operating properly.If the status LED continues to flash, referto the “Troubleshooting Chart” on page5-9.
Status LED
5-5
3. Slide the ice maker out of the mountingrails and leave the wiring harness con-nected.
4. Jumper the thermostat, as shown below.
5. Connect power to the unit.
6. Remount the ice maker, making sure thatthe water fill tube is inside the fill cup.
7. Make sure there is a clear path across thebin for the infrared beam to travel to thereceiver sensor.
8. Close the freezer door and wait 5 secondsto allow the optics relay to close.
9. Open the freezer door and you will see theejector bar moving. Remove the thermo-stat jumper prior to the ejector bladesreaching the 10:00 position, or else youwill not see the water fill. The mold shouldbe warm due to the heater operation.
10. Disconnect the power immediately afterthe water fill.
11. With the freezer door closed, reconnectthe power.
12. Wait for a minimum of 5 seconds, and amaximum of 50 seconds, then open thefreezer door, and view the status LED forthe output codes, as shown in Chart C, onpage 5-7.
NOTE: The optics must be working properlyto test the ice maker. If the optics test fails,you will not be able to force a harvest and checkthe ice maker. Refer to the TroubleshootingChart on page 5-10 for additional servicing in-formation.
IMPORTANT: If the freezer temperature isnot cold enough to allow the ice maker bi-metal to close, a jumper must be installedon the ice maker at test points T and H, andthe test rerun.
1. Run an optics check as described in theprevious section.
2. Disconnect power to the unit.
Electrical Shock Hazard
Voltage is present during these tests.
WARNINGCOMPONENT DIAGNOSTICS MODE
Motor Jumper (Points T and H)
5-6
— Chart B —
Diagnostics Chart For 2002 Design Optics Boards
— Chart A —
Diagnostics Chart For Original Design Optics Boards
STEP # STATUS LED POSSIBLE CAUSES ACTION
1. Open the freezer door (make sure that the freezer door has been closed for a minimum of 10 seconds prior to opening the door).
2. Activate the door switch 3 times. Push the button in completely for 1 second each time.
3. Close the freezer door for a minimum of 5 seconds for a maximum of 50 seconds.
4. Open the freezer door and immediately view the diagnostics “status” LED.
2 pulses, repeated once, indicates the optics are blocked, or defective. Clear the optics path, and repeat the “Optics Diagnostics Procedure.” Replace both boards, if necessary.
A steady light that is ON for 5 seconds indicates that both of the optics boards are good. Continue with the “Component Diagnostics Mode.”
If there is no light, unplug the refrigerator for 5 seconds, and repeat the test. If there is still no light, replace both optics boards.
OPTICS DIAGNOSTICS PROCEDURE FOR ORIGINAL DESIGN BOARDS
OPTICS DIAGNOSTICS MODE CHARTSNOTES:
1. Optics Diagnostics will not respond:
• For 5 minutes after the ice maker begins a “harvest” cycle. To reset the control, wait untilthe ice maker “parks,” then unplug the refrigerator for 5 seconds, and repeat the test.
• While the control board is running self-checks. Reset the control, as above.2. The ice maker control must be in the “ON” position.
3. The ice bin must be on the door and the ice level below the notched openings.
STEP # STATUS LED POSSIBLE CAUSES ACTION
The optics are faulty. Go to Step 2.
Faulty Status LED, or original style boards are installed.
Replace the receiver and emitter boards, or perform the steps in Chart A.
LED is on steadily. The Optics are working properly. Close the freezer door.
OPTICS DIAGNOSTICS PROCEDURE FOR 2002 DESIGN BOARDS
1. Open the freezer door.
No lamp.
Go to Step 2.
Ice maker is in the “harvest” mode. The harvest mode consists of a five (5) minute period that starts when the bimetal closes, and the ice maker begins to run.
Two (2) pulses followed by a one (1)second delay (repeated).
The flapper door on the emitter is blocking the beam.
2. Press in the emitter flapper door to unblock the optics beam.
To confirm, press in and hold the freezer door switch. If in the “harvest” mode, the Status LED will flash once every second.
Replace the emitter and receiver boards.The Optics are faulty.Two (2) pulses followed by a one (1) second delay (repeated).
5-7
— Chart C —Component Diagnostics Mode
For Original & 2002 Design Boards
COMPONENT DIAGNOSTICS MODE CHART
5. Close the freezer door to align the optics and a harvest cycle will begin in 5 seconds.
1. Disconnect the power supply.2. Slide the ice maker out and remove the cover.3. Jumper holes “T” and “H” to bypass the bimetal and start a harvest.4. Reconnect the power supply.
Status LED Output Codes
4 PULSES, repeated once, indicates the relay is defective. Replace both the emitter and receiver boards.
6. Open the freezer door and observe the ice maker. A “harvest” should be in progress.NOTE: If holes “T” and “H” are properly jumpered and the ice maker will not run, stop the test, and check the ice maker. 7. Remove the jumper before the fingers reach 10:00. Reinstall the ice maker, or be prepared to catch the water fill during step 8.8. Disconnect power immediately after the water fill.
STEADY LIGHT for 5 seconds indicates the relay and optics are okay, and the receiver senses the ice maker.NO LIGHT: Unplug the refrigerator for 5 seconds, and repeat the test.
3 PULSES, repeated once, indicates the optics and relay are okay, but the ice maker is not being sensed, or will not operate. If this happens:
COMPONENT DIAGNOSTICS MODE (RUN OPTICS DIAGNOSTICS PROCEDURE FIRST)
• Check the bail arm switch to make sure it is On.
9. With the freezer door closed, reconnect the power supply.
• Check the ice maker circuit and the connections back to the receiver board and neutral. • Check the ice maker components.
2 PULSES, repeated once, indicates the optics are blocked, or defective. Clear the optics path, and repeat the “Optics Diagnostics Procedure.” Replace both boards, if necessary.
10. Wait 5 seconds, to a maximum of 50 seconds, then open the freezer door, and watch the Status LED for one of the following codes.
5-8
TES
TR
ESU
LTPO
SSIB
LE C
AUSE
CORR
ECTI
VE A
CTIO
N
Ice
mak
er s
lide
cont
rol t
urne
d O
FF (c
lose
d).
Mov
e ic
e m
aker
slid
e co
ntro
l to
ON
(ope
n).
Dirt
on
optic
s.
Cle
an d
irt fr
om o
ptic
s.M
isalig
ned
ice b
in.
Rea
lign
ice
bin
cuto
uts
with
opt
ics
path
. Ic
e in
bin
blo
ckin
g op
tics
path
. R
emov
e en
ough
ice
from
bin
to c
lear
pat
h.
Fros
t on
optic
s le
nses
. C
lean
fros
t fro
m le
nses
. Ic
e bi
n no
t clo
sing
optic
s em
itter
door
pro
perly
. Ta
pe e
mitt
er d
oor c
lose
d an
d re
test
. If o
ptic
s te
sts
ok
ay, t
he ic
e bi
n an
d/or
its
mou
ntin
g ar
e at
faul
t.Fr
eeze
r doo
r not
com
plet
ely
clos
ed d
urin
g
O
ptic
s Te
st.
Clo
se fr
eeze
r doo
r and
rete
st.
Faile
d op
t ics.
Rep
lace
em
it ter
and
rece
iver
boa
rds
and
rete
st.
Ice
mak
er is
in “h
arve
st” c
ycle
. W
ait 5
min
utes
unt
il “h
arve
st” c
ycle
is c
ompl
ete
and
rete
st.
LED
was
not
vie
wed
with
in 2
sec
onds
of
op
enin
g fre
ezer
doo
r. R
etes
t and
vie
w L
ED w
ithin
2 s
econ
ds o
f ope
ning
free
zer
door
. Fr
eeze
r doo
r was
not
clo
sed
for a
min
imum
of
5 se
cond
s be
fore
sta
rt ing
test
. C
lose
free
zer d
oor,
wai
t for
at l
east
5 s
econ
ds, a
nd re
test
.
Inco
rrect
wiri
ng a
t em
it ter
or
rece
iver
boa
rd.
Cor
rect
wiri
ng a
nd r
etes
t .
Opt
ics
perfo
rmin
g se
lf-te
sts
(will
not
pe
rform
dia
gnos
t ic te
sts
durin
g th
is t i
me)
. M
ake
sure
ice
mak
er is
“par
ked.
” Unp
lug
refri
gera
tor f
or
5
seco
nds
to re
set o
ptic
s co
ntro
l and
rete
st.
LED
is d
efec
t ive.
Rep
lace
em
it ter
and
rece
iver
boa
rds
and
rete
st.
5 se
cond
LED
on
stea
dy.
Ice
mak
er c
ontro
l circ
uit i
s fu
nctio
ning
nor
mal
ly.
Non
e re
quire
d.
No L
ED p
ulse
s.
2 LE
D p
ulse
s, re
peat
ed.
Opt
ics
Dia
gnos
tic M
ode
(opt
ics
test
onl
y)
TR
OU
BL
ES
HO
OT
ING
CH
AR
T A
Ori
gin
al O
pti
cs D
esig
n
5-9
TR
OU
BL
ES
HO
OT
ING
CH
AR
T B
2002
Op
tics
Des
ign
TES
TR
ESU
LTPO
SSIB
LE C
AUSE
CORR
ECTI
VE A
CTIO
N2
LED
pul
ses,
repe
ated
.Ic
e m
aker
slid
e co
ntro
l tur
ned
OFF
(clo
sed)
.M
ove
ice
mak
er s
lide
cont
rol t
o O
N (o
pen)
.D
irt o
n op
tics.
C
lean
dirt
from
opt
ics.
Fros
t on
optic
s le
nses
. C
lean
fros
t fro
m le
nses
. Fl
appe
r doo
r is
open
and
is b
lock
ing
the
emitt
er b
eam
.H
old
the
emitt
er d
oor c
lose
d, a
nd th
e st
atus
LED
sho
uld
be
on s
tead
y.
Faile
d op
tics.
Rep
lace
em
itter
and
rece
iver
boa
rds
and
rete
st.
No L
ED p
ulse
s.
Ice
mak
er is
in 5
min
ute
“har
vest
” cyc
le.
To v
erify
, pre
ss in
on
door
sw
itch.
Sta
tus
LED
sho
uld
flash
at
1 s
econ
d in
terv
als.
Inco
rrect
wiri
ng a
t em
it ter
or
rece
iver
boa
rd.
Cor
rect
wiri
ng a
nd r
etes
t .
Opt
ics
perfo
rmin
g se
lf-te
sts
(will
not
pe
rform
dia
gnos
t ic te
sts
durin
g th
is t i
me)
. M
ake
sure
ice
mak
er is
“par
ked.
” Unp
lug
refri
gera
tor f
or
5
seco
nds
to re
set o
ptic
s co
ntro
l and
rete
st.
LED
is d
efec
t ive.
Rep
lace
em
it ter
and
rece
iver
boa
rds
and
rete
st.
5 se
cond
LED
on
stea
dy.
Flap
per d
oor i
s he
ld c
lose
d.N
orm
al w
ith f l
appe
r doo
r clo
sed.
Opt
ics
Dia
gnos
tic M
ode
(opt
ics
test
onl
y)
5-10
TR
OU
BL
ES
HO
OT
ING
CH
AR
T C
Co
mp
on
ent
Dia
gn
ost
ics
Mo
de
TES
TR
ESU
LTPO
SSIB
LE C
AUSE
CORR
ECTI
VE A
CTIO
N4
LED
pul
ses,
repe
ated
onc
e.
Def
ectiv
e em
itter
rel
ay.
Rep
lace
em
itter
and
rece
iver
boa
rds
and
rete
st.
Ice
mak
er in
“hom
e” p
ositio
n an
d bi
met
al is
ope
n.
Inst
all j
umpe
r in
ice
mak
er h
oles
“T” a
nd “H
” and
rete
st.
Ice
mak
er b
ail a
rm s
witc
h in
OFF
pos
ition.
Ba
il ar
m n
ot u
sed
in th
ese
mod
els
but s
witc
h m
ust b
e O
N.
Ice
mak
er is
unp
lugg
ed.
Plug
in ic
e m
aker
and
rete
st.
Ther
mal
fuse
in ic
e m
aker
har
ness
is o
pen.
Rep
lace
ice
mak
er h
arne
ss a
nd re
test
.In
corre
ct w
iring
at e
mitt
er o
r rec
eive
r boa
rd.
Cor
rect
wiri
ng a
nd r
etes
t. Pr
oble
m w
ith ic
e m
aker
.Se
e "Ic
e M
aker
Che
cks.
”2
LED
pulse
s.
Opt
ics
boar
ds d
efec
tive.
Rep
lace
em
itter
and
rece
iver
boa
rds
and
rete
st.
5 se
cond
LED
on
stea
dy.
Ice
mak
er c
ontro
l circ
uit i
s fu
nctio
ning
nor
mal
ly.
Non
e re
quire
d.
No L
ED p
ulse
s.
Opt
ics
perfo
rmin
g se
lf-te
sts
(will
not
per
form
di
agno
stic
test
s du
ring
this
t im
e).
Mak
e su
re ic
e m
aker
is “p
arke
d.” U
nplu
g re
frige
rato
r for
5 se
cond
s to
rese
t opt
ics
cont
rol a
nd re
test
.
Opt
ics
chec
k no
t run
bef
ore
test
ing
ice
mak
er.
Run
opt
ics
test
and
rech
eck
ice
mak
er.
Free
zer
door
not
clo
sed
afte
r O
ptic
s te
st.
Clo
se fr
eeze
r doo
r to
star
t har
vest
. O
ptic
s pa
th n
ot c
lear
. C
lear
opt
ics
path
. O
ptic
s te
st fa
ilure
. R
epla
ce e
mit t
er a
nd re
ceiv
er b
oard
s an
d re
test
. Ic
e m
aker
is u
nplu
gged
. Pl
ug ic
e m
aker
in.
Ther
mal
fuse
in ic
e m
aker
har
ness
is o
pen.
Repl
ace
ice m
aker
har
ness
.W
iring
har
ness
or d
oor s
witc
h pr
oble
m.
Che
ck c
ontin
uity
in w
iring
har
ness
and
doo
r sw
itch.
Ejec
tor b
ar d
oes
not m
ove.
Mot
or h
as fa
iled.
Re
plac
e ice
mak
er m
odul
e.
Ther
mos
tat j
umpe
r not
mak
ing
cont
act .
Rep
ositi
on ju
mpe
r. H
eate
r has
faile
d.Re
plac
e ice
mak
er.
Ther
mos
tat j
umpe
r was
lef t
inst
alle
d p
ast 1
1:00
po
sit io
n.
Rem
ove
jum
per b
y 10
:00
posi
tion
of e
ject
or b
ar.
Wat
er v
alve
is u
nplu
gged
. C
onne
ct h
arne
ss to
val
ve.
Cus
tom
er’s
wat
er s
uppl
y is
pro
blem
.C
heck
for p
rope
r wat
er s
uppl
y.
Froz
en w
ater
f ill
tube
.
Def
rost
the
wat
er f i
ll tu
be a
nd c
heck
for s
eepi
ng v
alve
. W
ater
val
ve h
as fa
iled.
Rep
lace
wat
er v
alve
.Ej
e cto
r ba r
do e
s n o
t sto
p a t
“h
ome”
pos
ition
.Th
e rm
o sta
t ju m
p er n
o t re
mo v
e d.
Rem
ove
ther
mos
tat j
umpe
r.
Ice
Mak
er C
heck
s
No
pow
er a
pplie
d to
ice
m
aker
mod
ule.
3 LE
D p
ulse
s, re
peat
ed.
No
wat
er f i
ll.
Ice
Mak
er C
ontro
l C
ircui
t
Hea
ter i
s no
t on.
5-11
TROUBLESHOOTING THE MOTOR
NOTE: Refer to the “Motor Failure ModesChart” at the bottom of the page.
1. Motor does not hum or rotate.a)1, 2, 3, 5, 6.b)Make sure refrigerator is plugged in.c) Make sure freezer door is completely
closed.d)Make sure selection button is in UN-
LOCK position.e)Wait 1 minute after an ice jam occurs
for motor’s surge protector to automati-cally reset.
f) Disconnect/reconnect the 6-pin harnessto the motor 3 - 5 times to remove anyoxidation buildup on the connector pins.
g)Check power in the circuit (see “Check-ing The Switch Pack on page 5-14 ).
2. Motor hums but does not rotate.
a)Clear ice jam in ice bin.b)Possible broken gear inside motor as-
sembly.
3. Motor starts but heats rapidly.a)2, 3, 5.
4. Motor runs too hot after extended opera-tion.a)3, 4, 6, 9.
5. Reduction in power—motor overheats.a)2, 5, 6.
6. High no-load speed (30 RPM is nominal).a)2
7. Excessive noise (mechanical).a)2, 7, 8.
8. Jerky operation—severe vibration.a)2.
1. Open circuit in connection to line (e. g. house fuse is blownor motor is defective).
2. Defective motor.
3. Overloaded motor (mechanical failure in load).
4. Ventilation blocked.
5. Wrong connection to motor.
6. Improper or low line voltage.
7. Poor alignment between motor and load (e. g. loose motormounting).
8. Amplified motor noise due to mounting conditions.
9. High ambient temperature.
Motor Failure Modes Chart
Electrical Shock Hazard
Disconnect power before servicing.
Replace all panels before operating.
Failure to do so can result in death orelectrical shock.
WARNING
5-12
CHECKING THE MOTORTo check voltages* at the motor for crushedor cubed ice operation:
1. Open the freezer door and remove the icebucket from the door.
2. Tape the door switch closed.
NOTE: When you are instructed to make areading at the motor connector, press the tipsof the red and black test leads into the indi-cated harness connector slots so they touchthe bare metal wire connectors. Reach aroundthe front of the door and press the ice dispenserlever to activate the dispenser switch.
* Voltage readings may vary, depending on the supplyvoltage, and the type of test equipment being used.
Press The IceDispenser Lever
Door Switch Taped Closed
Pin 1
Press Tips IntoConnector SlotsAgainst Bare WireTerminals To CheckVoltages
Motor HarnessConnector
Test Leads
Electrical Shock Hazard
Voltage is present during these tests.
WARNING
5-13
Motor Connector
Pin 1
7
6
5
4
3
2
1
+115 VDC
–115 VDC
Neutral
L1 (115 VAC)
Motor (115 VDC)
Motor (115 VDC)
To Switch Pack (OR/BU)
To Switch Pack (PK/BK)
From Switch Pack (RD/WH)
From Switch Pack (BR/WH)
(WH)
(BU)
No ConnectionWire Harness Pinouts
3. Press the Unlocked button on the ice andwater dispenser front panel.
4. Touch the AC meter test leads to wireharness pins 3 and 5, then press the icedispenser lever. The meter should read115 VAC.
5. Touch the DC meter’s black test lead towire harness pin 6, and the red test lead topin 7, then press the ice dispenser lever.The meter should read +115 VDC ±10%.
6. Press the Crushed ice button on the iceand water dispenser front panel.
7. Touch the DC meter’s black test lead towire harness pin 1, and the red test lead topin 2, then press the ice dispenser lever.The meter should read +115 VDC ±10%.
8. Press the Cube ice button on the ice andwater dispenser front panel.
9. Touch the DC meter’s red test lead to wireharness pin 1, and the black test lead topin 2, then press the ice dispenser lever.The meter should read +115 VDC ±10%.
10. Remove the tape from the door switch.
5-14
L1 ToLight
L1(115 VAC)
L1(115 VAC)
L1 To Paddle/Dispenser Switch
& DC Motor
To Motor (115 VDC)
Pin 2
To Motor (115 VDC)
Pin 1
115 VDCFrom Motor
115 VDCFrom Motor
YL/BK
BR/WH BR/WH
RD/WH RD/WH
OR/BUPK/BKBU/BK
BU/BK
GY
CHECKING THE SWITCH PACKTo check voltages at the switch pack:
NOTE: All of the wires must be connected tothe pins on the switch pack to obtain the fol-lowing readings, including the wire to the pinbeing measured. Also, the freezer door lightswitch must be in the closed (taped down)position before performing any voltage checks.When measuring a voltage, lift the wire con-nector partially off the switch terminal, andtouch the meter test lead probe to the terminal(see below).
Switch Pack Pinouts
1. To check the Light On and Light Offswitches, press the Light button on the iceand water dispenser front panel, and thedispenser housing light should turn on. Ifthe light does not turn on:
a)Check switch pack pins BU/BK and YL/BK using an AC voltmeter. The metershould read 115 VAC if the switch isopen, or 0 VAC if the switch is closed.
b)Disconnect the BU/BK and YL/BK wiresfrom the Light switch terminals. Checkthe switch continuity with an ohmme-ter. The continuity should change whenthe Light switch is pressed on and off.
2. The Locked/Unlocked switch allows ACvoltage to be sent to the motor through theice dispenser lever switch when it is in theUnlocked position. If the Unlocked switchis defective, the dispenser lever will notoperate the motor. To check the switch:
a)Check pins BU/BK and GY using an ACvoltmeter. The meter should read 115VAC if the switch is open, (Locked), or0 VAC if the switch is closed (Un-locked).
b)Disconnect the BU/BK and GY wiresfrom the Lock/Unlocked switch termi-nals. Check the switch continuity withan ohmmeter. The continuity shouldchange when the switch is changedfrom Locked to Unlocked.
Electrical Shock Hazard
Voltage is present during these tests.
WARNING
5-15
3. To check to make sure that DC voltage isbeing supplied to the switch pack:
a)Press the Unlocked button.b)Touch the DC voltmeter’s black test lead
to PK/BK and the red test lead to OR/BU, then press the ice dispenser lever.The meter should read +115 VDC±10%.
4. To check the Crushed and Cube iceswitches:
a)Press the Unlocked and the Crushedbuttons on the ice and water dispenserfront panel.
b)Touch the DC voltmeter’s black test leadto BR/WH and the red test lead to RD/WH, then press the ice dispenser lever.The meter should read +115 VDC±10%.
c) Press the Unlocked and the Cube but-tons on the ice and water dispenserfront panel.
Continuity Tests
Refer to the chart below to perform the ice dis-penser switch pack continuity tests. All of thetests are performed with power disconnectedfrom the unit, and the wires disconnected fromthe terminals of the switch under test.
d)Touch the DC voltmeter’s black test leadto RD/WH and the red test lead to BR/WH, then press the ice dispenser lever.The meter should read +115 VDC±10%.
Electrical Shock Hazard
Disconnect power before servicing.
Replace all panels before operating.
Failure to do so can result in death orelectrical shock.
WARNING
Switch Pack Setup Continuity Readings
Light Interlock Switch With Switch Closed Terminal BK to BU/BKIce Dispenser “Unlock” Selected Terminal BU/BK to GYIce Lever Switch With Dispenser Pushed In Terminal GY to BUDispenser Light Switch With Light On Selected Terminal BU/BK to YL/BKCrushed Ice Selected Terminals OR/BU to RD/WH
& PK/BK to BR/WHCubed Ice Selected Terminals OR/BU to BR/WH
& PK/BK to RD/WH
5-16
Wire TerminalSlot
WireRetainer
Tab
MotorConnector
Screwdriver
2. To install a wire terminal, position theterminal with the slot facing the retainertab, and slide it into the connector. Pressdown on the retainer tab to lock it in place.
SERVICING THE HARNESS &MOTOR CONNECTORBoth the motor connector and the wire harnessare serviceable. To remove a wire from themotor connector:
1. Use a small screwdriver or knife and liftthe wire retainer tab far enough to slidethe wire terminal out of the connector.
Electrical Shock Hazard
Disconnect power before servicing.
Replace all panels before operating.
Failure to do so can result in death orelectrical shock.
WARNING
6-1
WHIRLPOOL WIRING DIAGRAM
ICE DISPENSERMOTOR (SEE NOTE 2)
NOTES:1. Freezer door is open, ice dispenser selection in Cubed mode, and dispenser lock switch in Locked position.2. The dispenser has a built-in inverter board which converts the 115 VAC to 115 VDC. The OR/BU wire is the
positive (+) side of the DC signal, and the PK/BK wire is the negative (–) side. The BR/WH and RD/WH wiresswitch polarity, depending on the crushed/cubed switch position, (see the following table).
BR/WH RD/WHCrushed – +
Cubed + –
WIRING DIAGRAMS & STRIP CIRCUITS
6-2
KITCHENAID WIRING DIAGRAM
NOTES:1. Freezer door is open, ice dispenser selection in Cubed mode, and dispenser lock switch in Locked position.2. The dispenser has a built-in inverter board which converts the 115 VAC to 115 VDC. The OR/BU wire is the
positive (+) side of the DC signal, and the PK/BK wire is the negative (–) side. The BR/WH and RD/WH wiresswitch polarity, depending on the crushed/cubed switch position, (see the following table).
BR/WH RD/WHCrushed – +
Cubed + –
ICE DISPENSERMOTOR (SEE NOTE 2)
6-3
CUBED MODE
STRIP CIRCUITS
CRUSHED MODE
Voltage RectifierBridge Converts
115 VAC to 115 VDC
MotorCW
Rotation
L1
N
LightInterlockSwitch
Dispenser LockSwitch
Crushed IceSelection
Ice LeverSwitch
+
–
BK
BU/BK GY BU
OR/BU
PK/BK BR/WH
RD/WH
Voltage RectifierBridge Converts
115 VAC to 115 VDC
MotorCCW
Rotation
L1
N
LightInterlockSwitch
Dispenser LockSwitch
Cubed IceSelection
Ice LeverSwitch
+
–
BK
BU/BK GY BU
OR/BU
PK/BK
BR/WH
RD/WH
7-1
CONFIRMATION OF LEARNING EXERCISES1. Trace the circuit for the crushed ice operation by closing the necessary switches. Refer to the
Wiring Diagram NOTES at the bottom of the page.
NOTES:1. Freezer door is open, ice dispenser selection in Cubed mode, and dispenser lock switch in Locked position.2. The dispenser has a built-in inverter board which converts the 115 VAC to 115 VDC. The OR/BU wire is the
positive (+) side of the DC signal, and the PK/BK wire is the negative (–) side. The BR/WH and RD/WH wiresswitch polarity, depending on the crushed/cubed switch position, (see the following table).
BR/WH RD/WHCrushed – +
Cubed + –
ICE DISPENSERMOTOR (SEE NOTE 2)
L1To Light Switch
N
7-2
NOTES:1. Freezer door is open, ice dispenser selection in Cubed mode, and dispenser lock switch in Locked position.2. The dispenser has a built-in inverter board which converts the 115 VAC to 115 VDC. The OR/BU wire is the
positive (+) side of the DC signal, and the PK/BK wire is the negative (–) side. The BR/WH and RD/WH wiresswitch polarity, depending on the crushed/cubed switch position, (see the following table).
2. Trace the circuit for the cubed ice operation by closing the necessary switches. Refer to theWiring Diagram NOTES at the bottom of the page.
BR/WH RD/WHCrushed – +
Cubed + –
ICE DISPENSERMOTOR (SEE NOTE 2)
L1To Light Switch
N