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VI. SERVICE DIAGNOSIS
1. NO ICE PRODUCTION
PROBLEM
CHECK
POSSIBLE CAUSE
REMEDY
[1] The ice
dispenser will
not start.
a) Power source
1. OFF position.
1. Move to ON position.
2. Loose connections.
2. Tighten.
3. Bad contacts.
3. Check for continuity and
replace.
b) Power cord
1. Loose connection.
1. Tighten.
2. Open circuit - damaged.
2. Repair or replace.
c) Fuse
1. Blown out.
1. Replace.
d) Bin control
1. Tripped with bin filled with
ice.
1. Remove ice.
2. Out of position.
2. Place in position.
3. Fused contacts.
3. Check for continuity and
replace.
e) Transformer
1. Coil winding opened.
1. Replace.
f) Wiring to
controller board
1. Loose connections or
open.
1. Check for continuity and
repair or replace.
g) Thermistor
1. Leads short-circuit
or open and high
temperature safety
(backup timer) operates.
1. See “II. 1. [c]
BEFORE CHECKING
CONTROLLER BOARD”.
h) Hot gas solenoid
valve
1. Continues to open in
freeze cycle and high
temperature safety
(backup timer) operates.
1. Check for power OFF in
freeze cycle and replace.
i) Water solenoid
valve
1. Mesh filter or orifice gets
clogged and water supply
cycle does not finish.
1. Clean.
2. Coil winding opened.
2. Replace.
3. Wiring to water valve.
3. Check for loose connection
or open and replace.
j) Controller board
1. Defective.
1. See “II. CONTROLLER
BOARD”.
[2] Compressor
will not start
or operates
intermittently.
a) Overload
protector
1. Bad contacts.
1. Check for continuity and
replace.
2. Voltage too low.
2. Check for recommended
voltage.
3. Refrigerant overcharged
or undercharged.
3. Recharge.
b) Starter
1. Defective.
1. Replace.
c) Start capacitor or
run capacitor
1. Defective.
1. Replace.
d) Power relay
1. Bad contacts.
1. Check for continuity and
replace.
2. Coil winding opened.
2. Replace.
e) Compressor
1. Wiring to compressor.
1. Check for loose connection
or open, and repair or
replace.
2. Defective.
2. Replace.
