Service Manual

31
No Ice Production - Possible Cause
15. Pump Motor a) Motor winding open.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
d) Mechanical seal worn out.
16 Thermostatic Expansion Valve a) Bulb loose.
b) Operating erratically.
1 7. Liquid Line Valve a) Closed in freeze cycle.
b) Open in harvest cycle.
18. Fan Motor a) Motor winding open.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
19. Water System a) Water leaks causing short freeze time.
2. Low Ice Production
Low Ice Production - Possible Cause
1. Appliance in Freeez-Time
Correction Cycle
a) See "II.C.Freeze-Time Correction Cycle."
Long Harvest Cycle
1. Evaporator a) Scaled up.
2. Spray Tubes, Spray Guides,
Cube Guides, Splash Guard, or
Separator A
a) Dirty.
b) Out of position.
3. Refrigerant Charge a) Low.
4. Water Supply a) Low water pressure.
b) External water lters clogged.
c) Insufficient water line size.
Minimum 3/8" Nominal ID (10 mm Nominal OD in the EU) water
tubing or equivalent.
d) Too cold.
5. Control Board
See "II.D. Control Board Check"
a) Thermistor connection loose (K3).
b) Defective.
6. Thermistor
See "II.G. Thermistor Check"
a) Loose, disconnected, or defective.
7. Hot Gas Valve a) Erratic or closed.
8. Inlet Water Valve a) Screen or orice clogged.
9. Compressor a) Inefficient or off.
10. Liquid Line Valve a) Erratic or open.
11. Thermostatic Expansion Valve a) Defective.
Short Freeze Cycle
1. Low Water Supply a) Water lters clogged.
2. Inlet Water Valve a) Screen or orice clogged.