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8) Ice Purge Cycle – "GM" LED is on. 30-sec. GM delay timer terminates, GM, EH, and
CCR/GMPR 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. To bypass 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. If UFS
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 #3 (BR) to a neutral (W) for 115VAC. If 115VAC is not
present, check 115VAC power supply. If 115VAC is present, check CB K1 #2 (W/BK)
to a neutral (W). If 115VAC is present on CB K1 #3 (BR) and not on CB K1 #2 (W/BK),
replace CB. If 115VAC is present on CB K1 #2 (W/BK), 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.
9) Freeze Cycle – "COMP" and "GM" LEDs are on. Note: CB X1 relay energizes the
PDS (pump-down solenoid) not the MC (magnetic contactor). The 5-min. ice purge
timer terminates. GM, EH, and CCR/GMPR continue. PDS energizes. Once the
refrigeration circuit low-side pressure reaches 29 PSIG, CLPS closes, energizing MC,
MC then energizes Comp and FMR. CCH de-energizes. Ice production starts 4 to 6 min.
after Comp energizes 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 refill cycle begins, FZT terminates, and FT starts.
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 PDS energizes. If not, check for 5VDC between CB K5 connector pin
closest to CB K4 connector and CB K9 connector #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 K9 connector #6 (W/O). If 5VDC is present and CB "Comp"
LED is off (PDS not energized), replace CB. If 5VDC is not present, check for 115VAC
between CCR/GMPR terminal #7 (R) to CCR/GMPR terminal #8 (W) for 115VAC.
If 115VAC is not present (GM not energized), see step 8 above. If 115VAC is present
and CCR/GMPR contacts are open (5VDC present between terminals #3 (W/O) and
#5 (W/O)), check CCR/GMPR solenoid voltage and solenoid continuity. Replace
CCR/GMPR if necessary.
Icemaker Diagnosis (PDS): If "COMP" LED is on and PDS is not energized, check
CB X1 relay BR wire to a neutral (W) and CB X1 relay DBU wire to a neutral (W) for
115VAC. If 115VAC is present on CB X1 BR wire and not on CB X1 DBU wire, replace
CB. If 115VAC is present on CB X1 DBU wire and PDS is not energized, check for
115VAC at PDS (DBU) to a neutral (W) for 115VAC. If 115VAC is present and PDS is
not energized, check PDS solenoid for continuity. If open or if PDS is sticking closed,
replace PDS.
17
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