Service Manual

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pump-out is complete. The pump-out frequency control (S4 dip switch 5) is factory set,
and generally no adjustment is required. However, the pump-out frequency control can
be set to have a pump-out occur every 10 cycles or every cycle. For details, see "III.C.4.
Pump-Out Frequency Control (S4 dip switch 5)."
Pump-Out Diagnosis: In the freeze cycle before pump-out (see table above), after
5min. of freeze disconnect CB black K5 connector (FS connector). Check that PM
stops and re-starts. Next, check that PM rotation is correct (water owing down the
drain through CV). If PM does not stop and re-start, check that CB LEDs 1, 3, and
2are on. If not, replace CB. IfLEDs1,3, and 2 are on and PM does not energize,
check for 115VAC at CB K1 #5 (DBU) to neutral (W). If 115VAC is not present, replace
CB. If115VAC is present, check that X10 relay is de-energized. If not, check X11 relay
status. If X11 relay is energized, replace CB. If X11 relay is de-energized and X10 relay
is energized, replace X11 relay (contacts sticking). If X10 relay is de-energized, check
for 115VAC at terminal #6 (DBU) to neutral (W) and terminal #2 (DBU) to neutral (W).
If 115VAC is present on terminal #6 (DBU) and not on terminal #2 (DBU), replace
X10relay. If PM is energized and rotating in pump-out rotation, make sure the drain line
is not clogged and that CV is clean and operating properly.
Conrm FM (if connected to CB K1 connector pin #3) and LLV de-energize. If FM is
energized, conrm where FM is connected on CB. If connected to CB K1 connector
pin #9, FM should be energized. If connected to CB K1 connector pin #3 and FM is
energized, replace CB. If LLV is energized with LEDs 1, 3, and 2 on, replace CB.
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, power is switched off or
freeze-time correction cycle is initiated. The appliance always restarts at the
1-min. ll cycle.
2. Shutdown Diagnosis
1) See "II.E.1. Bin Control Check."
3. Freeze-Time Correction Cycle Diagnosis
1) See "II.C. Freeze-Time Correction Cycle."
Legend: BC–bin control; CB–control board; Comp–compressor; CR–compressor relay;
CT–control transformer; CV–check valve; FM–fan motor; FMR–fan motor remote;
FS–oat switch; HGV–hot gas valve; HM–headmaster (C.P.R.); HPS–high-pressure
switch; L LV–liquid line valve; MC–magnetic contactor; PM–pump motor;
TXV–thermostatic expansion valve; WRV–water regulating valve; WV–inlet water
valve