Service Manual

19
Pump-Out Diagnosis:
In the freeze cycle before pump-out (see table above), after 5min. of freeze disconnect
FS connector. Check that CB LEDs 4, 5, 6, and 7are on, PM stops, then restarts, DV
energizes, and water is owing down the drain through DV. If not, continue to steps
below.
a) CB Diagnosis: Conrm FM de-energizes. If FM is energized with LEDs 4, 5, 6, and
7 on, replace CB. If PM does not stop and restart and DV does not energize, check
that CB LEDs 4, 5, 6, and 7 are on. Ifnot, replace CB. IfLEDs 4, 5, 6, and 7 are
on and PM is not energized, check for 115VAC at CB K5 #3 (DBU) to neutral(W).
If115VAC is not present, replace CB. If115VAC is present at CB K5 #3 (DBU) and
PM is not energized, continue to "b) PM Diagnosis:" below. If PM is energized and
DV is not energized, check for 115VAC at CB K5 #6 (GY) to neutral(W). If LED 4 is
on and 115VAC is not present at CB K5 #6 (GY), replace CB.
b) PM Diagnosis: Check for 115VAC CB K5 #3 (DBU) to neutral(W). If 115VAC is not
present, see "b) CB Diagnosis" above. Next, check for 115VAC at control switch
#4 (DBU) to neutral (W). If 115VAC is not present, conrm 115VAC at control switch
#5 (BK) to neutral (W). If 115VAC is present at control switch #5 (BK) and not at
control switch #4(DBU), replace control switch. If 115VAC is present at control
switch #4 (DBU) and PM is de-energized, check PM capacitor, motor winding, wiring
connections, and impeller for binding.
e) DV Diagnosis: Check for 115VAC at CB K5 #6 (GY) to neutral (W). If 115VAC is not
present, see "b) CB Diagnosis:" above. If 115VAC is present at CB K5 #6 (GY) and
DV is de-energized, check DV coil continuity, make sure the drain line is not clogged
and that DV is clean and operating properly.
8) Normal Harvest Cycle – Same as the initial harvest cycle. Return to step 5a) above.
Note: Appliance continues to cycle until BC is satised or power is switched off. The
appliance always restarts at the 1-min. ll cycle.
2. Shutdown Diagnosis
1) See "II.D.1. Bin Control Check."
Legend: BC–bin control; CB–control board; Comp–compressor; CR–compressor relay;
DV–drain valve; FM–fan motor; FS–oat switch; HGV–hot gas valve;
HPS–high-pressure switch; PM–pump motor; TXV–thermostatic expansion valve;
WRV–water regulating Valve; WV–inlet water valve