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PROBLEM
POSSIBLE CAUSE
TEST / ACTION
H. Ice cubes too thick.
I. Condenser fan won't run
during icemaking cycle.
J. Water pump won't run.
K. Water tank empty.
L. Milky ice cubes.
M. Taste in ice
N. Uneven build-up of frost on
evaporator plate
1. Evaporator thermostat set at or beyond
maximum thickness.
2. Evaporator thermostat out of calibration.
3. In cases due to refrigerant overcharge,
liquid refrigerant will "spill over" and run
results in longer compressor run and
thicker than normal cubes.
1. Fan blade binding on shroud.
2. Defective motor.
3. Open circuit in wiring.
4. Defective evaporator thermostat.
1. Pump binding in housing.
2. Open circuit in wiring.
3. Defective motor.
4. Defective evaporator thermostat.
1. On initial start (after installation) water
will not run to tank until first
“release/defrost” cycle is initiated by
evap thermostat.
2. Open circuit to water solenoid.
3. Complete water line restriction.
4. Defective evaporator thermostat.
5. Water valve stuck shut.
6. Burnt or open solenoid coil.
7. Water inlet tube from water valve not
directing water to tank.
8. Water inlet screen plugged.
1. Water hardness in excess of 15 grains
(also see Category 6).
2. Insufficient water supply in water tank.
1. High mineral content in water supply.
2. Foods being stored in ice bin.
3. Unit Packaging materials not removed.
1. Water valve restricted.
2. Little or no water in water reservoir pan.
3. Drain plug not in place on bottom of
water reservoir pan.
4. The water level is over the top of the
drain tube in reservoir pan at beginning
of ICEMAKING cycle.
5. The water restrictor or the holes in the
distributor are plugged.
6. The water pump is not operating.
1. Turn ice thickness control knob counter-clock
wise until desired thickness is obtained.
2. Recalibrate or replace.
3. Remove liquid refrigerant from system; evac-
uate and recharge as shown on model/ serial
plate.
1. Adjust shroud to clear fan blade.
2. Replace motor.
3. Locate and repair (see wiring diagram).
4. Replace thermostat.
1. Remove cause of bind.
2. Locate and repair (see wiring diagram).
3. Replace motor.
4. Replace thermostat.
1. This is normal. Wait first release cycle.
2. Locate and repair (see wiring diagram)
3. Check shut-off valve or water line restrictions.
4. Replace.
5. Repair or replace valve.
6. Replace coil.
7. Position outlet end of tube into water pump
pan (see pictorial of water system).
8. Remove screen & clean.
1. Advise customer that water softener may be
required (see #1 in Problem “M” below).
2a. See Problem K. above.
2b. Machine defrosting in less than one minute
does not allow time for water to enter and
overflow. Use flow washer Part #588930.
1. Consult water treatment expert for advice.
2. Advise customer to refrain from storing foods,
etc. in ice in.
3. Remove all packaging material.
1. Repair or replace valve.
2. See Problem “K” above.
3. Install drain plug.
4. Check water system components for proper
placement.
5. Clean or replace distributor tube. Clean or
replace water restrictor.
6. See problem “J” above.
Troubleshooting Guide
Model 506(UC Ice Maker)
Model 506(UC Ice Maker)
6-4
#3752200 - Revision B - May, 2006
