25
B. Diagnostic Charts
1. No Ice Production
Problem
Possible Cause
Remedy
[1] The icemaker will not
start.
a) Power Supply
1. Off, blown fuse, or
tripped breaker.
1. Turn on, replace, or reset.
2. Loose connection.
2. Tighten.
3. Bad contacts.
3. Check for continuity and
replace.
4. Not within
specifications.
4. Refer to nameplate and
correct.
b) Water Supply
1. Water supply off or
pressure too low.
1. Check and get
recommended pressure.
c) Fuse (Control Box)
1. Blown.
1. Check for short circuit and
replace.
d) Control Switch
1. "OFF" or "WASH"
position.
1. Move to "ICE" position.
2. Bad contacts.
2. Check for continuity and
replace.
e) Bin Control Thermostat 1. Tripped with bin filled
with ice.
1. Remove ice.
2. Ambient temperature
too cool.
2. Increase ambient
temperature.
3. Set too warm.
3. See "II.E. Bin Control."
4. Bulb out of position.
4. Place in position.
5. Bad contacts.
5. Check for continuity and
replace.
f) High Pressure Control 1. Bad contacts.
1. Check for continuity and
replace.
2. Dirty air filter or
condenser.
2. Clean.
3. Ambient temperature
too warm.
3. Reduce temperature.
4. Refrigerant
overcharged.
4. Recharge.
5. Fan not operating.
5. See chart 1.[7]
6. Refrigerant line or
components plugged.
6. Clean and replace drier.
g) Transformer
1. Coil winding opened
or shorted.
1. Replace.
h) Wiring to Control Board 1. Loose connections or
open.
1. Check for continuity and
replace.
i) Interlock Switch
(Cleaning Valve)
1. Open position.
1. Move to closed position.
2. Bad contacts.
2. Check for continuity and
replace.
