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No Ice Production - Possible Cause
15. Compressor a) Compressor relay/magnetic contactor contacts bad or coil winding
open.
b) Start capacitor or run capacitor defective (single phase only).
c) Internal protector open.
d) Start relay contacts bad or coil winding open (single phase only).
e) Protector tripped.
f) Compressor defective.
16. Hot Gas Valves (KMS & SRK) a) Closed in harvest cycle.
b) Open in freeze cycle.
1 7. Thermistor
See "IV.E. Thermistor Check"
a) Loose, disconnected, or defective.
18. Pump Motor a) Motor winding open.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
d) Mechanical seal worn out.
19. Thermostatic Expansion Valve a) Bulb loose.
b) Operating erratically.
20. Liquid Line Valves (KMS & SRK) a) Closed in freeze cycle.
b) Open in harvest cycle.
2 1. Fan Motors-Remote a) Motor winding open.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
22. Headmaster (C.P.R.) a) Defective.
23. Water System a) Water leaks causing short freeze time.
2. Freeze-Up
Defrost and clean the icemaker 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.
3. Spray Tubes and/or Spray
Guides
a) Dirty.
b) Out of position.
4. Water Supply a) Low water pressure.
b) External water lters clogged.
c) Insufficient water line size.
Minimum 3/8" nominal ID copper water tubing or equivalent.
5. Harvest Water Valve a) Screen or orice clogged.
b) Defective.