Hoshizaki 73180 service manual Fill Cycle and Refill Cycle

2. Auxiliary Codes A-2 and Later

No Ice Production - Possible Cause

	Startup
1. Power Supply	a) Unplugged, off, blown fuse, or tripped breaker.
	b) Not within specifications.
2. Power Switch	a) "OFF" position.
	b) Bad contacts.
3. Bin Control Thermostat Assembly	a) Open with bin filled with ice.
(with integrated heater)
	b) Ambient temperature too cool.
	c) Out of position.
	d) Out of adjustment. See "IV.C. Bin Control Check."
	e) Bad contacts.
	f) Bad thermostat heater.
4. Optional Drain Pump HS-0248	a) Drain pump's upper float switch closed.
Safety
	Fill Cycle and Refill Cycle
1. Water Supply	a) Water supply off or improper water pressure.
	b) External water filters clogged.
2. Water Control Relay	a) Energized and not allowing water valve to energize.
	b) Defective.
3. Inlet Water Valve	a) Screen or orifice clogged.
	b) Coil winding open.
4. Float Switch	a) Float does not move freely.
See "IV.D. Float Switch Check	b) Defective.
and Cleaning"
	Freeze Cycle
1. Water Control Relay	a) Open.
2. Time Delay Relay	a) Defective.
3. Gear Motor	a) Gear motor external protector (2.4~3.0A) tripped.
	b) Gear motor internal protector open or windings open.
	c) Bad gear motor capacitor.
	d) Locked bearings.
	e) Spline coupling or gear broken and auger not turning.
4. Fan Motor	a) Motor winding open.
	b) Bearing worn out or locked rotor.
	c) Fan blade does not move freely.
5. Compressor Relay	a) Open coil.
	b) Open contacts.
6. Compressor	a) Compressor external protector open or defective.
	b) Motor winding open.
	c) PTC relay contacts bad or coil winding open.
	d) Inefficient.
7. Evaporator	a) Dirty.
	b) Damaged or defective.
8. Condenser	a) Dirty.

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