Service Manual

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During the pump-out cycle, PM is energized from CB K1 connector pin #5 (DBU wire)
through X10 relay terminal #6 and terminal #2. This allows for PM reverse rotation and
water ow to pump-out check valve. Diagnosis: Check that PM stops for 2 seconds,
then restarts. Conrm X10 relay is de-energized and water is owing through the
pump-out check valve and not over the evaporator. If PM does not restart, check for
115VAC at CBK1connector pin #5 (DBU wire) to a neutral (W wire). If 115VAC is not
present and LED 3 is on, replace CB. If 115VAC is present and PM does not start,
check for 115VAC at X10 relay terminal #2 (DBU wire) to a neutral (W wire). If 115VAC is
not present, X10 relay is either energized or bad. If 115VAC is present and PM does not
start, check PM windings for continuity and PM capacitor.
7) Harvest Cycle –Sameastheinitialharvestcycle.See"IV.A.4)InitialHarvestCycle."
8) Shutdown
Bin Control:
See"IV.C.1.BinControlCheck."
Legend: BC–bin control; CB–control board; Comp–compressor; FMR–fan motor-remote;
F/S–oat switch; HGVs–hot gas valves (KMS and SRK); HM–headmaster (C.P.R.);
LLVs–liquid line valves (KMS and SRK); PM–pump motor; TXV–thermostatic
expansion valve; WV–inlet water valve