3. Low Ice Production
Low Ice Production - Possible Cause
| Long Harvest Cycle | |
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1. Evaporator | a) Scaled up. | |
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2. Spray Tubes and/or Spray | a) Dirty. | |
Guides | b) Out of position. | |
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3. Refrigerant Charge | a) Low. | |
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4. Water Supply | a) Low water pressure. | |
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| b) External water filters clogged. | |
| c) Insufficient water line size. | |
| Minimum 3/8" nominal ID copper water tubing or equivalent. | |
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| d) Too cold. | |
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5. Control Board | a) Thermistor connection loose (K3). | |
See "IV.B. Control Board Check" |
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b) Defective. | ||
6. Thermistor | a) Loose, disconnected, or defective. | |
See "IV.E. Thermistor Check" |
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7. Hot Gas Valves (KMS & SRK) | a) Erratic or closed. | |
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8. Harvest Water Valve | a) Screen or orifice clogged. | |
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9. Compressor | a) Inefficient or off. | |
10. Liquid Line Valves (KMS & SRK) | a) Erratic or open. | |
11. Termostatic Expansion Valve | a) Defective. | |
(TXV) |
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12. Headmaster (C.P.R.) | a) Defective. | |
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| Long Freeze Cycle | |
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1. Evaporator | a) Scaled up, dirty. | |
2. Float Switch | a) Scaled up, dirty. | |
See "IV.D. Float Switch Check |
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b) Float sticking. | ||
and Cleaning" | ||
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c) Defective switch. | ||
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3. Fill/Refill or Harvest Water Valve | a) Leaking by. | |
4. Hot Gas Valves (KMS & SRK) | a) Erratic or open. | |
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5. Condenser | a) Clogged. | |
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6. Control Board | a) Float switch connection loose (K5). | |
See "IV.B. Control Board Check" |
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b) Defective. | ||
7. Refrigerant Charge | a) Low. | |
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8. Thermostatic Expansion Valve | a) Bulb loose. | |
(TXV) |
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b) Defective. | ||
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9. Compressor | a) Inefficient or off. | |
10. Pump Motor | a) RPM too slow. | |
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11. Liquid Line Valves (KMS & SRK) | a) Erratic or restricted. | |
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12. Headmaster (C.P.R.) | a) Defective. | |
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