Hoshizaki SRC-14H Service Manual page 21

Condensing Unit Diagnosis: When PDS de-energizes and closes, pump-down starts.
Confirm refrigerant low-pressure drops to 9 PSIG and CLPS opens. If refrigerant
low-pressure reaches 9 PSIG and CLPS does not open, replace CLPS. If Comp and
FMR remain energized after CLPS opens, replace MC.
Note: If BC1 fails to shut down the icemaker, BC2 opens, CB shuts down the icemaker
and sounds a 9-beep alarm.
BC2 (mechanical): BC2 opens (actuator paddle engaged). CB shuts down the
icemaker and sounds a 9-beep alarm.
Diagnosis: See "II.D.2. Bin Control 2 (mechanical backup) Check."
Legend: BC1–bin control 1 (infrared sensor); BC2–bin control 2 (mechanical backup);
CB–control board; CCH–crankcase heater; CCR/GMPR–compressor control relay/
gear motor protect relay; CLPS–control low-pressure switch; Comp–compressor;
DV–drain valve; EH–evaporator heater; FMR–fan motor-remote; FT–90-sec. low
water safety timer; FZT–30-min. freeze safety timer; GM–gear motor;
HM–headmaster (C.P.R.); HPS–high-pressure switch; LFS–lower float switch;
MC–magnetic contactor; PDS–pump-down solenoid valve; SLPS–safety low-
pressure switch; UFS–upper float switch; WV–inlet water valve
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