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22
8) Ice Purge Cycle – "GM" LED is on. 30-sec. GM delay timer terminates. GM,
CCR/GMPR, FM/FMR, and EH (-C model except FD-650) energize. Once CCR/GMPR
energizes, 5VDC circuit closes through CCR/GMPR terminal #3 (W/O) and terminal
#5 (W/O) and CB K9 #5 (W/O) and K9 #6 (W/O). After 5VDC circuit closes, 5-min.
ice purge timer starts. Tobypass the 5-min. Ice Purge Cycle, press the "SERVICE"
button on CB after the "GM" LED turns on. WARNING! Risk of electric shock. Care
should be taken not to touch live terminals. Diagnosis: If "GM" LED is off, check
that UFS closes and WV de-energizes. IfUFS is closed, 30 sec. has passed, and "GM"
LED remains off, replace CB. If"GM" LED is on and GM is off, check CB K1 #2 (BK
or BR) to a neutral (W) for 115VAC. If115VAC is not present, check 115VAC power
supply. If115VAC is present, check CB K1 #3(BK, P, or R) to a neutral (W). If 115VAC
is present on CB K1 #2 (BK or BR) and not on CB K1 #3 (BK, P, or R), replace CB.
If115VAC is present on CB K1#3 (BK, P, or R), check GM fuse, GM internal protector,
GM windings and capacitor, and GM coupling between auger and GM. When GM
energizes,
CCR/GMPR energizes starting 5-min. ice purge timer. If FM/FMR does not start, check
FM/FMR capacitor, FM/FMR windings, and FM/FMR bearings.
9) Freeze Cycle – "COMP" and "GM" LEDs are on. The 5-min. ice purge timer
terminates. GM, EH, CCR, and FM/FMR continue. Comp or LLV/SLV (MLH model)
energize. Ice production starts 4to 6 min. after Comp or LLV/SLV (MLH model) energize
depending on ambient and water conditions. As ice is produced, the water level in
the reservoir drops. UFS opens. Nothing happens at this time. When LFS opens, WV
energizes and rell cycle begins, FZT terminates, and FTstarts.
FZT: 30-Min. Freeze Safety Timer – FZT starts when UFS closes and terminates
when LFS opens. If LFS does not open within 30 min. of UFS closing, CB shuts down
the icemaker and sounds a 5-beep alarm. See "III.A.2.LED Lights and Audible Alarm
Safeties." To reset, turn the power supply off and on again. See "II.F. Diagnostic Tables"
for troubleshooting details.
Icemaker Diagnosis (CCR/GMPR): 5-min. ice purge timer terminates, CB "COMP"
LED is on and COMP or LLV/SLV (MLH model) energizes. If not, check for 5VDC
between CB K5 connector pin closest to CB K4 connector and CB K9connector
#5(W/O). If 5VDC is not present, replace CB. If 5VDC is present, check for 5VDC
between CB K5 connector pin closest to CB K4 connector and CB K9connector
#6(W/O). If 5VDC is present and CB "Comp" LED is off (CR, COMP, or LLV/SLV (MLH
model) not energized), replace CB. If 5VDC is not present, check for 115VAC between
CCR/GMPR terminal #7(O) to CCR/GMPR terminal #8(W) for 115VAC. If115VAC
is not present (GM not energized), see step 8 above. If 115VAC is present and CCR/
GMPR contacts are open (5VDCpresent between terminals #3(W/O) and #5(W/O)),
check CCR/GMPR solenoid voltage and solenoid continuity. Replace CCR/GMPR if
necessary.
Icemaker Diagnosis (COMP or LLV/SLV (MLH model)): If"COMP" LED is on and
COMP or LLV/SLV (MLH model) is not energized, check CB X1 relay BK or BR wire to
a neutral (W) and CB X1 relay V, BR, or R wire to a neutral (W) for 115VAC. If115VAC
is present on CB X1BK or BR wire and not on CBX1 V, BR, or R wire, replace CB.
If115VAC is present on CBX1V, BR, or R wire and COMP or LLV/SLV (MLH model) is
not energized, check for 115VAC at CB X1 Comp relay, Comp or LLV/SLV (MLH model).
Check Comp internal overload (motor protector), start relay, and capacitors.
Check LLV/SLV (MLH model) solenoid continuity.
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