Hoshizaki M029-897 service manual C. Service Diagnosis Table, No Ice Production - Possible Cause

C. Service Diagnosis Table

First see "III.G. Error Codes." If there are no recorded errors, refer to the table below.

No Ice Production - Possible Cause

1. Power Supply	a) Off, blown fuse, or tripped breaker.
	b) Not within specifications.
2. Fuse (Control Box)	a) Blown.
3. Control Switch	a) In "OFF" or "WASH" position.
	b) Bad contacts.
4. High-Pressure Switch	a) Dirty condenser or air filter.
	b) Fan motor not operating.
	c) Refrigerant overcharged.
	d) Bad contacts.
	e) Refrigerant lines or components restricted.
5. Control Transformer	a) Coil winding open or shorted.
(115VAC/10.5VAC)
6. Control Board	a) Error. See "III.G. Error Codes."
	b) Defective.
7. Bin Control	a) Tripped with bin filled with ice.
See "II.D. Bin Control Check and
	b) Actuator does not move freely.
Cleaning"
	c) Defective.
8. Water Supply	a) Water supply off or improper water pressure.
	b) External water filters restricted.
9. Inlet Water Valve	a) Screen or orifice restricted.
	b) Coil winding open.
10. Compressor	a) Compressor relay/magnetic contactor contacts bad or coil winding
	open.
	b) Start capacitor or run capacitor defective (single phase).
	c) Internal protector open.
	d) Start relay contacts bad or coil winding open (single phase).
	e) Defective.
11. Hot Gas Valve	a) Defective.
12. Evaporator (Cube Control)	a) Loose, disconnected, or defective.
Thermistor
See "II.E. Evaporator Thermistor
Check"
13. Pump Motor	a) Mechanical seal worn out.
	b) Defective.
	c) Defective capacitor.
14. Thermostatic Expansion Valve	a) Bulb loose.
	b) Defective.
15. Fan Motor	a) Defective.
	b) Defective capacitor.
16. Water System	a) Water leaks.

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