Hoshizaki Modular Cubelet Serenity Series Service Manual page 34

1. Control Board
2. Gear Motor
1. Compressor Control Relay
2. Control Board
3. Pump-Down Solenoid Valve
4. Control Low-Pressure Switch
5. Safety Low-Pressure Switch
(manual reset)
6. High-Pressure Switch
7. Magnetic Contactor
8. Condensing Unit Fan Motor(s)
9. Compressor
10. Refrigerant Line
11. Thermostatic Expansion Valve
(TXV) (not adjustable)
12. Evaporator
13. Headmaster (C.P.R.)
14. Drain Valve
15. Water System
1. Float Switch
2. Inlet Water Valve
3. Water Supply
4. Control Board
Ice Purge Cycle
a) No power to gear motor.
b) No power to compressor control relay.
a) Blown fuse.
b) Internal protector open.
c) Defective.
Freeze Cycle
a) No voltage from gear motor.
b) Defective.
a) No power to pump-down solenoid valve or not reading compressor
control relay condition. Defective.
a) Defective.
a) Refrigerant pressure too low.
b) Out of adjustment or defective.
a) Refrigerant pressure too low.
b) Defective.
a) Dirty condenser.
b) Fan(s) not operating.
c) Ambient temperature too warm.
d) Refrigerant overcharged.
e) Refrigerant line or component restricted.
a) Defective.
a) Defective capacitor.
b) Fan blade binding.
c) Defective.
a) Start or run capacitor defective.
b) Start relay defective.
c) Defective.
a) Gas leaks.
b) Refrigerant line or component restricted.
a) Defective.
a) Dirty.
b) Damaged or defective.
a) Not operating properly and liquid line temperature too warm.
a) Dirty, leaking by.
b) Defective.
a) Water leaks.
Refill
a) Dirty/sticking.
b) Defective.
a) Clogged or defective.
a) Off.
a) No power to float switch or not reading float switch condition.
b) No power to inlet water valve.
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