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2. Diagnostic Procedure: Auxiliary Code C-1 and Later
3) Power On/Initial Harvest Cycle – LED 1 is ashing and LED 3 is on. Movethe
control switch to the "ICE" position. LEDs 1 (green), 3 (green), and 4 (orange) turn on
briey then turn off. Then LED 1 starts ashing, LED 3 turns on and Comp, HGV, and
WV energize. Initial harvest cycle starts. 50-sec. HT and 102-sec. WVT start.
Note: 24VAC to CB is conrmed with a ashing LED 1.
a) Power On Diagnosis: Conrm green LED 1 is ashing. Ifnot, conrm appliance is
plugged into electrical outlet. If optional drain pump HS-0248 or HS-5061 is installed,
conrm the water level in the drain pump reservoir is not high enough to close the
drain pump safety switch. When the water level lowers enough to open the drain
pump upper oat switch, power is restored to the icemaker. The pump motor remains
energized as long as the drain pump lower oat switch is closed. Ifoptional drain
pump is not installed, check that jumper connection is good. Next, check for 115VAC
at control switch #2(BR) to neutral (W) then at control switch #1(BR) to neutral (W).
If115VAC is present at #2 (BR) to neutral (W) and not at #1(BR) to neutral (W),
replace control switch. Check BC continuity. If open, warm BC thermostat bulb with
hand. See "II.D. Bin Control Check." If BC does not close, replace BC. If BC is closed
and LED 1 is not ashing, check for 115VAC primary voltage and 24VAC secondary
voltage at CT. If 115VAC is present and 24VAC is not, replace CT. If 24VAC is
present, check for 24VAC at CB B (R) to CB W (LBU). If 24VAC is not present, check
low-voltage wiring. If 24VAC is present and LED 1 is not on and ashing, replace CB.
b) BCH Diagnosis: If BCH does not energize, check BCH continuity. If open, replace
BCH.
c) Comp Diagnosis: If Comp does not energize, check PTC relay continuity. If open,
replace PTC. If closed, check Comp external protector and motor winding continuity.
Replace as needed.
d) HGV Diagnosis: If Comp is energized and evaporator is not warming, check that
HGV energizes and opens. If not, check for 115VAC at CB C1 (BR) to neutral (W)
and at CB B1 (P) to neutral (W). If 115VAC is present at CB C1 (BR) to neutral (W)
and not at CB B1 (P) to neutral (W), replace CB. If 115VAC is not present at CB
C1(BR) to neutral (W), check wiring connections from BC. If 115VAC is present,
check HGV coil continuity. Replace as needed.
e) WV Diagnosis: Conrm LED 3 is on. If not, replace CB. If LED 3 is on, check that
water enters the water tank. If not, check that the water supply line shut-off valve is
open and screens or external lters are clear. Check for 115VAC at CB C2 (BR) to
neutral (W) and CB A2 (O) to neutral (W). If115VAC is not present at CB C2 (BR) to
neutral (W), check wiring from BC. If 115VAC is present at CB C2 (BR) to neutral (W)
and not at CB A2 (O) to neutral (W), replace CB. If 115VAC is present and WV does
not energize, check WV coil continuity. Ifopen, replace WV.
f) Initial Harvest Cycle Termination Diagnosis: 50-sec. HT terminates and freeze
cycle starts. If not, replace CB.