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F. Diagnostic Tables

Before consulting the diagnostic tables, check for correct installation, proper voltage per

appliance nameplate, and adequate water pressure (10 to 113 PSIG). Check control

board using the steps in "II.C. Control Board Check."

1. No Ice Production

No Ice Production - Possible Cause
Startup
1. Power Supply a) Off, blown fuse, or tripped breaker.
b) Loose connection.
c) Not within specications.
2.Power Switch a) "OFF" position.
b) Defective.
3.Safety Switch a) Safety switch not engaged.
b) Defective.
4.Power Protect Relay a) Energized. Voltage not within specications.
b) Defective.
5.Control Transformer a) Coil winding open or shorted.
6.1A 24VAC Fuse (Control Box) a)Blown.
7. Control Board
See "II.C. Control Board Check"
a) In alarm. See "III.B. LED Lights and Audible Alarm Safeties."
b) Defective.
8.Control Switch a)In "DRAIN" position.
b) Bad contacts.
9.Bin Control a) Tripped with bin lled with ice.
b) Proximity switch defective.
c) Actuator paddle does not move freely.
10. High-Pressure Switch a)Control board in 3 or 4-beep alarm. See "III.B. LED Lights and
Audible Alarm Safeties."
Fill Cycle
1. Control Board a) No power to inlet water valve.
b) No power to oat switch or not reading oat switch condition.
2.Inlet Water Valve a) Screen or orice clogged.
b) Coil winding.
3.Water Supply a) Water supply off or improper water pressure.
b) External water lters clogged.
4.Float Switch a) Float does not move freely.
b) Defective.
5.Drain Valve a)Sticking.
Ice Purge Cycle
1. Control Board a) No power to gear motor.
b) No power to gear motor protect relay circuit (5VDC).
2.Gear Motor a)3A fuse blown.
b) Internal protector open.
c) Motor winding.
d) Mechanical failure.
3.Coupling a) Defective.
4.Gear Motor Protect Relay a) Defective.