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
Summary of Contents for MODULAR CUBELET SERENITY SERIES FS-1022MLH-C
Page 62: ...62 B Wiring Diagram 1 Icemaker...
