20
2. Freeze-Up
Defrost and clean the icemaker prior to diagnosing freeze-up. Fill out a freeze-up checklist.
See the Hoshizaki America 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. Ice Chute
a) Out of position.
b) Damaged.
3. Control Board
See "III.B. Settings and
Adjustments."
a) Harvest control set too short. Do not adjust.
b) Freeze control set too long.
c) Defective.
4. Bin Control
See "II.C. Bin Control Check"
a) Bin control heater defective.
b) Defective.
5. Thermistor
See "II.D. Thermistor Check"
a) Loose, disconnected, or defective.
6. Refrigerant Charge
a) Low.
7. Hot Gas Valve
a) Closed or restricted.
Freeze Cycle
1. Evaporator
a) Scaled up.
b) Damaged.
2. Spray Assembly
a) Nozzles dirty.
b) Ice chute out of position.
3. Control Board
See "III.B. Settings and
Adjustments."
a) Freeze control set incorrectly.
b) Defective.
4. Thermistor
See "II.E. Thermistor Check"
a) Defective.
5. Refrigerant Charge
a) Low.
6. Inlet Water Valve
a) Leaking by.
7. Pump Motor
a) RPM too slow.
b) Impeller damaged.
