Service Manual

40
No Ice Production - Possible Cause
14. Inlet Water Valve a) Screen or orice clogged.
b) Coil winding open.
c) Open in freeze cycle.
15. Float Switch
See"IV.D.FloatSwitchCheck
andCleaning"
a) Float does not move freely.
b) Defective.
16. Compressor a) Compressor relay/magnetic contactor contacts bad or coil winding
open.
b) Start capacitor or run capacitor defective (single phase only).
c) Internal overload protector open.
d) Start relay contacts bad or coil winding open (single phase only).
e) Protector tripped.
f) Compressor defective.
1 7. Hot Gas Valves (KMS & SRK) a) Closed in harvest cycle.
b) Open in freeze cycle.
18. Thermistor
See"IV.E.ThermistorCheck"
a) Loose, disconnected, or defective.
19. Pump Motor a) Motor winding open.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
d) Mechanical seal worn out.
20. Thermostatic Expansion Valve
(TXV)
a) Bulb loose.
b) Operating erratically.
2 1. Liquid Line Valves (KMS & SRK) a) Closed in freeze cycle.
b) Open in harvest cycle.
22. Fan Motors-Remote a) Motor winding open.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
23. Headmaster (C.P.R.) a) Defective.
24. X10 Relay (Pump Motor Direction
Relay)
a) Bad contacts.
b) Defective coil.
25. X11 Relay (X10 Control Relay) a) Bad contacts.
b) Defective coil.
26. Water System a) Water leaks causing short freeze time.
2. Freeze-Up
Defrostandcleantheunitpriortodiagnosingfreeze-up.See"VI.A.CleaningandSanitizing
Instructions."Filloutafreeze-upchecklist.Thefreeze-upchecklistcanbefoundinthe
Hoshizaki Technician's Pocket Guide or contact your local distributor for a copy of the
freeze-up checklist.
Freeze-Up - Possible Cause
Harvest Cycle
1. Evaporator a) Scaled up.
b) Damaged.
2. Cube Guides a) Out of position.
b) Damaged.