E. Diagnostic Tables
1. No Ice Production
No Ice Production - Possible Cause
1. Power Supply | a) Unplugged, off, blown fuse, or tripped breaker. | |
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| b) Not within specifications. | |
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2. Water Supply | a) Water supply off or improper water pressure. | |
| b) External water filters clogged. | |
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3. Optional Drain Pump | a) Safety switch open. | |
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b) Connector loose or disconnected. | ||
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| c) Clogged or kinked hose. | |
| d) Defective. | |
4. Control Switch | a) In "OFF" or "WASH" position. | |
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| b) Bad contacts. | |
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5. Thermostatic Bin Control | a) Out of adjustment. | |
See "II.C. Bin Control Check" |
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b) Open with bin filled with ice. | ||
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| c) Ambient temperature too cool. | |
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| d) Bulb out of position. | |
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| e) Bin control heater defective. | |
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| f) Defective. | |
6. Control Transformer | a) Defective. | |
(115VAC/24VAC) |
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(Auxiliary Code |
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7. Control Board | a) Defective. | |
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8. Compressor | a) External protector defective. | |
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| b) PTC defective. | |
| c) Inefficient. | |
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| d) Open windings. | |
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9. Inlet Water Valve | a) Screen or orifice clogged. | |
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| 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. | |
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10. Hot Gas Valve | a) Closed in harvest cycle. | |
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| b) Open in freeze cycle. | |
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11. Inlet Water Valve | a) Screen or orifice clogged. | |
| b) Coil winding open. | |
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| c) Water valve open in freeze cycle. | |
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12. Hot Gas Valve | a) Closed in harvest cycle. | |
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| b) Open in freeze cycle. | |
13. Thermistor | a) Loose, disconnected, or defective. | |
See "II.E. Thermistor Check" |
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14. Pump Motor | a) Motor winding open. | |
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| b) Bearing worn out or locked rotor. | |
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| c) Defective capacitor. | |
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15. Fan Motor | a) Motor winding open. | |
| b) Bearing worn out or locked rotor. | |
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