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9) Ice Purge Cycle – "GM" LED is on. GM and GMPR energize. 60-sec. ice purge timer
starts. GM runs for 60 sec. to clear any ice from the evaporator. Note: GM cannot
energize unless UF/S is closed, WCR is energized, and WCR terminals #4 (O wire)
and #6(GYwire) are closed. Diagnosis: If "GM" LED is off, check control switch and
BCcontinuity. If either are open, CB "GM" LED will not turn on. If both are closed
and CB "GM" LED does not turn on, replace CB. If "GM" LED turns on and GM does
not energize, check for 115VAC at CB K1 connector NO pin (DBU wire) to a neutral
(Wwire). If 115VAC is not present, replace CB. If 115VAC is present, check GM external
protector (overload), GM windings continuity, and GM capacitor. If GM external protector
or GM internal protector is open, allow to cool and reset. If reset does not occur, replace
as needed. If GM winding is open, replace GM. If GM energizes, but auger does not
turn, check coupling between auger and GM. If Comp energizes at the same time GM
energizes, check CB. See "IV.C. Control Board Check."
10) Freeze Cycle – "COMP" and "GM" LEDs are on. 60-sec. ice purge timer terminates.
GM continues. CB conrms GM operation through GMPR terminal #3 (BR wire) and
terminal #5 (DBU wire). Comp and FM energize. Ice production begins 4to 6min.
after Comp and FM energize depending on ambient and water temperature conditions.
Diagnosis: 60 sec. after GM energizes, conrm Comp LED turns on and Comp and
FM energize. If not, check that GMPR is energized (115VAC). Next, check continuity
between GMPR terminal #3 (BR wire) and terminal #5 (DBU wire). If open, GMPR
is de-energized or contacts are stuck open. If closed, and "COMP" LED, Comp, and
FM do not energize, replace CB. If "COMP" LED turns on and Comp and FM do not
energize, conrm 115VAC at CB X2 relay (BR wire) to a neutral (Wwire). If 115VAC is
not present, check connections. If 115VAC is present, conrm 115VAC at CB X2relay
light blue (LBUwire) to a neutral (W wire). If 115VAC is not present and "COMP" LED is
on, replace CB. If 115VAC is present, check Comp external protector (overload), allow to
cool and reset. If reset does not occur, replace as needed. Check Comp motor windings
continuity and Comp capacitor. Check FM for binding and FM winding continuity.
11) Rell /Low Water Safety – As ice is produced the water level in the reservoir drops.
UF/S opens. Nothing happens at this time. LF/S opens. FTstarts. WCR de-energizes,
energizing WV. Comp, FM and GM continue. As water lls the reservoir, LF/S closes.
Nothing happens at this time. UF/S closes. FT terminates. WCRenergizes, closing
low water safety circuit and de-energizing WV. This continues until BC shuts the
icemaker down, a drain cycle occurs, or power is turned off to the icemaker.
Diagnosis: Conrm that the water level has dropped and UF/S and LF/S are open.
See "IV.E. Float Switch Check and Cleaning." Check that the reservoir lls. If not, check
for water supply line shut-off valve closed, clogged water lters, dirty or sticking F/S,
clogged WVscreen, defective WCR, defective WV coil, and DV leaking by. For further
information, see "IV.B.8) Fill Cycle." If UF/S remains open longer than 90 sec. after LF/S
opens (FTexceeded), Comp and FM de-energize. GM de-energizes 60 sec. later. WV
continues until UF/S closes.