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No Ice Production - Possible Cause
14. Compressor
15. Hot Gas Valves (KMS & SRK)
16. Thermistor
See "II.F. Thermistor Check"
17. Pump Motor
18. Thermostatic Expansion Valve
19. Liquid Line Valves (KMS & SRK) a) Closed in freeze cycle.
20. Fan Motor-Remote
21. Headmaster (C.P.R.)
22. Water System
2. Freeze-Up
Defrost and clean the icemaker prior to diagnosing freeze-up. Fill out a freeze-up
checklist. See "II.I. Freeze Up Check List," the Hoshizaki Technician's Pocket Guide or
contact your local distributor for a copy of the freeze-up checklist.
Freeze-Up - Possible Cause
1. Evaporator
2. Cube Guides
3. Spray Tubes and/or Spray
Guides
4. Water Supply
5. Inlet Water Valve
6. Float Switch
See "II.E. Float Switch Check
and Cleaning"
7. Refrigerant Charge
a) Magnetic contactor contacts bad or coil winding open.
b) Start capacitor or run capacitor defective (1 phase SRK).
c) Start relay contacts bad or coil winding open (1 phase SRK).
d) Internal protector open.
e) Compressor defective.
a) Closed in harvest cycle.
b) Open in freeze cycle.
a) Loose, disconnected, or defective.
a) Motor winding open.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
a) Bulb loose.
b) Operating erratically.
b) Open in harvest cycle.
a) Motor winding open.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
a) Defective.
a) Water leaks causing short freeze time.
Harvest Cycle
a) Scaled up.
b) Damaged.
a) Out of position.
b) Damaged.
a) Dirty.
b) Out of position.
a) Low water pressure.
b) External water filters clogged.
c) Insufficient water line size.
Minimum 3/8" nominal ID copper water tubing or equivalent.
a) Defective.
a) Float does not move freely.
b) Defective.
a) Low.
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