Hoshizaki M029-897 Low Ice Production - Possible Cause, Long Harvest Cycle, Long Freeze Cycle

Low Ice Production - Possible Cause

	Long Harvest Cycle
1. Evaporator	a) Scaled up.
2. Refrigerant Charge	a) Low.
3. Control Board	a) Thermistor connection loose (K3).
	b) Defective.
4. Evaporator (Cube Control)	a) Loose, disconnected, or defective.
Thermistor
See "II.E. Evaporator Thermistor
Check"
5. Hot Gas Valve	a) Erratic or closed.
6. Compressor	a) Inefficient or off.
7. Thermostatic Expansion Valve	a) Defective.
	Long Freeze Cycle
1. Evaporator	a) Scaled up, dirty.
2. Hot Gas Valve	a) Defective.
3. Condenser	a) Restricted.
4. Control Board	a) Defective.
5. Refrigerant Charge	a) Low.
6. Thermostatic Expansion Valve	a) Bulb loose.
	b) Defective.
7. Compressor	a) Inefficient or off.
Slab Does Not Break Into Separate Cubes - Possible Cause
1. Spring	a) Over-extended.
2. Water Plate	a) Obstacle caught between evaporator and water plate.
Cubes Drop Separately - Possible Cause
1. Refrigerant Charge	a) Low - Long harvest cycle.
2. Cam Arm	a) Worn out.
Imperfect Ice Production - Possible Cause
1. Water Supply	a) Improper water pressure.
	b) External water filters restricted.
	c) Water leaks from water tank or water plate due to broken tank or
	plate or icemaker out of level.
2. Inlet Water Valve	a) Water leaks from valve body or water supply pipe joint.
3. Water Plate	a) Spray holes restricted.
4. Pump Motor	a) Defective.
Large-Hole Cubes - Possible Cause (Also see III.H.1. Dimple Diameter")
1. Refrigerant Charge	a) Low.
2. Condenser	a) Dirty condenser or air filter.
3. Fan Motor	a) Defective.

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