Hoshizaki AM-50BAE-DS, AM-50BAE-AD Diagnostic Tables, No Ice Production Possible Cause

E. Diagnostic Tables

1. No Ice Production

No Ice Production - Possible Cause

1. Power Supply	a) Unplugged, off, blown fuse, or tripped breaker.
	b) Not within specifications.
2. Water Supply	a) Water supply off or improper water pressure.
	b) External water filters clogged.
3. Optional Drain Pump	a) Safety switch open.
(HS-0248 or HS-5061)
	b) Connector loose or disconnected.
	c) Clogged or kinked hose.
	d) Defective.
4. Control Switch	a) In "OFF" or "WASH" position.
	b) Bad contacts.
5. Thermostatic Bin Control	a) Out of adjustment.
See "II.C. Bin Control Check"
	b) Open with bin filled with ice.
	c) Ambient temperature too cool.
	d) Bulb out of position.
	e) Bin control heater defective.
	f) Defective.
6. Control Transformer	a) Defective.
(115VAC/24VAC)
(Auxiliary Code C-1 and Later)
7. Control Board	a) Defective.
8. Compressor	a) External protector defective.
	b) PTC defective.
	c) Inefficient.
	d) Open windings.
9. Inlet Water Valve	a) Screen or orifice clogged.
	b) Coil winding open.
	c) Inlet water valve remains open longer than 52 sec. in initial freeze
	cycle or remains open in normal freeze cycle.
10. Hot Gas Valve	a) Closed in harvest cycle.
	b) Open in freeze cycle.
11. Inlet Water Valve	a) Screen or orifice clogged.
	b) Coil winding open.
	c) Water valve open in freeze cycle.
12. Hot Gas Valve	a) Closed in harvest cycle.
	b) Open in freeze cycle.
13. Thermistor	a) Loose, disconnected, or defective.
See "II.E. Thermistor Check"
14. Pump Motor	a) Motor winding open.
	b) Bearing worn out or locked rotor.
	c) Defective capacitor.
15. Fan Motor	a) Motor winding open.
	b) Bearing worn out or locked rotor.

19