Service Manual

22
e) X13 Relay Diagnosis - If115VAC is present at X12 terminal #3 (DBU) to neutral and
PM and DV are not energized, check for 115VAC at X13 terminal #8 (DBU) to neutral
(W). If115VAC is present and X13 relay is de-energized, replace X13 relay.
(1) For PM and X13 Relay: If115VAC is present at X13 terminal #8 (DBU), check
for 115VAC at X13relay #6 (BK) and X13 relay #4 (Y) to neutral (W). If115VAC
is present at X13 relay #6 (BK) and not at X13 relay #4 (Y), replace X13 relay
(contacts sticking open). If 115VAC is present at X13 relay #4 (Y) and PM is not
energized, check PM capacitor, motor winding, and impeller for binding.
(2) For DV and X13 Relay: If115VAC is present at X13 terminal #8 (DBU), check for
115VAC at X13 relay #5 (DBU) and X13 relay #3 (W/BU) to neutral (W). If115VAC
is present at X13relay #5 (DBU) and not at X13 relay #3(W/BU), replace X13
relay (contacts sticking open). If 115VAC is present at X13 relay #3 (W/BU) 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. Bin Control Check."
Legend: BC–bin control; CB–control board; Comp–compressor; CR–compressor relay;
CT–control transformer; CV–check valve; DV–drain 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;
PM–pump motor; TXV–thermostatic expansion valve; WRV–water regulating valve;
WV–inlet water valve