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PROBLEM
POSSIBLE CAUSE
REMEDY
[2] All ice formed on
evaporator does
not fall into bin in
harvest cycle.
a) Evaporator
1. Scaled up.
1. Clean.
b) Water Supply Line
1. Water pressure too low. 1. Check and get
recommended
pressure.
c) Water Filter System
1. Dirty/Restricted.
1. Replace filter.
d) Harvest Water Valve
1. Dirty mesh filter or
orifice.
1. Clean.
2. Diaphragm does not
close.
2. Check for water leaks
with icemaker off.
e) Ambient and/or water
temperature
1. Too cool.
1. Increase temperature.
f) Line Valve
(if applicable)
1. Continuous to open in
harvest cycle.
1. Check operation in
harvest cycle and
replace.
g) Thermistor
1. Out of position or loose
attachment.
1. See "V. 17.
Thermistor."
h) Control Board
1. Harvest timer is set too
short.
1. See "II. 3. [c] Controls
and Adjustments, b)
Harvest Timer."
2. Defective.
1. See "II. 3. [d] Control
Board Check
Procedure."
i) Water Regulating
Valve (water-cooled
model only)
1. Leaking by in harvest.
1. Check and replace.
[3] Others
a) Spray Tubes
1. Clogged.
1. Clean.
2. Out of position.
2. Place in position.
b) Water System
1. Dirty.
1. Clean.
2. Water supply line too
small; requires 3/8” OD
line dedicated per
machine.
2. Increase water line
size.
3. Water filter flow rate too
small.
3. Replace with filter that
has larger flow rate.
c) Refrigerant
1. Low charge.
1. Check for leaks and
recharge.
d) Expansion Valve
1. Bulb out of position or
loose attachment.
1. Place in position.
2. Defective.
2. Replace.
e) Hot Gas Valve
1. Coil winding opened.
1. Replace.
2. Plunger does not move. 2. Replace.
3. Wiring to hot gas valve.
3. Check for loose
connection or open,
and replace.
f) Ice Cube Guide
1. Out of position and ice
trapped.
1. Place in position.
[c] LOW ICE PRODUCTION
PROBLEM
POSSIBLE CAUSE
REMEDY
[1] Freeze cycle time
is long.
a) See chart [b] [1] and check float switch, fill and harvest water valves, control
board, water pump, spray tubes, evaporator, and expansion valve.
b) See chart [a] [1] and check dirty air filter or condenser, ambient or water
temperature, refrigerant charge, water pressure, and condenser water regulating
valve (water-cooled model only).
c) Check pump, hot gas valve, headmaster (C.P.R) (remote air-cooled model only),
expansion valve, refrigeration check valve, and compressor.
