38
Problem
Possible Cause
Remedy
[8] All components
run, but no ice is
produced.
a) Refrigerant
1. Low charge.
1. Check for leaks and
recharge.
2. Air or moisture
trapped.
2. Replace drier and
recharge.
b) Compressor
1. Defective valve.
1. Replace.
c) Hot Gas Valve
1. Continues to open in
freeze cycle.
1. Check and replace.
d) Line Valve
(if applicable)
1. Continues to close in
freeze cycle.
1. Check and replace.
e) Inlet Water Valve
1. Water valve is wide
open during freeze.
1. Check for water leaks with
icemaker off.
f) Expansion Valve
1. Operating erratically.
1. Check and replace.
g) Headmaster (C.P.R.)
(remote air-cooled
model only)
1. Not operating properly
and liquid line
temperature too warm.
1. Replace headmaster.
h) Water Supply Line
(water-cooled model
only)
1. Condenser water
pressure too low or
off and high pressure
control opens and
closes frequently.
1. Check and get
recommended pressure.
i) Water Regulating Valve
(water-cooled model
only)
1. Set too high.
1. Adjust or replace. See
"V.G. Adjustment of Water
Regulating Valve."
2. Evaporator is Frozen Up
Problem
Possible Cause
Remedy
[1]Freeze cycle time is
too long.
a)Float Switch
1. Leads short-circuit or
defective switch.
1. Check and replace.
2. Float does not move
freely.
2. Clean or replace.
b)Inlet Water Valve
1. Diaphragm does not
close.
1. Check for water leaks with
icemaker off.
c) Control Board
1. Defective.
1. See "II.C.4. Control Board
Check Procedure."
d)Water Pump
1. RPM too slow.
1. Check and replace.
e)Spray Tubes
1. Clogged.
1. Unclog.
f) Evaporator
1. Scaled up.
1. Clean.
g)Expansion Valve
1. Operating erratically.
1. Check and replace.