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G. Diagnostic Tables
1. No Ice Production
PROBLEM POSSIBLE CAUSE REMEDY
[1] The icemaker
will not start.
a) Power Supply 1. OFF position. 1. Move to ON position.
2. Loose connections. 2. Tighten.
3. Bad contacts. 3. Check for continuity and
replace.
4. Voltage too high. 4. Check and get
recommended voltage.
5. Unplugged. 5. Plug in.
b) Fuse (inside fused
disconnect, if any)
1. Blown. 1. Check for short circuit
and replace.
c) Control Switch 1. OFF or WASH position. 1. Move to ICE position.
2. Bad contacts. 2. Check for continuity and
replace.
d) Bin Control Switch 1. Tripped with bin filled with
ice.
1. Remove ice.
2. Defective reed switch. 2. Check for continuity and
replace.
e) High Pressure
Control (KM-160
only)
1. Bad contacts. 1. Check for continuity and
replace.
f) Transformer 1. Thermal fuse blown or coil
winding open.
1. Replace.
g) Wiring to Control
Board
1. Loose connections or open. 1. Check for continuity and
replace.
h) Thermistor 1. Leads shorted or open and
high temperature safety
operates. If open, unit will
start but have long harvest
cycle.
1. See “II. F. Thermistor
Check”.
i) Hot Gas Solenoid
Valve
1. Continues to open in freeze
cycle and high temperature
safety operates.
1. Check for power off in
freeze cycle and replace.
j) Water Supply Line 1. Water supply off and water
supply cycle does not finish.
1. Check and get
recommended pressure.
Check for water supply.
2. Condenser water pressure
too low or off and high
pressure control opens and
closes frequently
(water-cooled model).
2. Check and get
recommended pressure.
k) Inlet Water Valve 1. Mesh filter or orifice gets
clogged and water supply
cycle does not finish.
1. Clean. Replace if
necessary.
2. Coil winding open. 2. Replace.
3. Wiring to water valve. 3. Check for loose
connection or open, and
replace.
l) Control Board 1. Defective. 1. See “II. C. Control Board
Check”.
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