26
PROBLEM
POSSIBLE CAUSE
REMEDY
[6] Freeze cycle time
is too short.
a) Drain Valve
1. Leaking by.
1. Clean or replace.
b) Float Switch
1. Dirty or erratic operation. 1. Clean or replace.
c) Control Board
1. Defective.
1. See "II. 3. [d] Control
Board Check
Procedure."
[7] Fan motor will
not start, or is not
operating.
(except
water-cooled
model.)
a) Fan Motor
1. Motor winding opened.
1. Replace.
2. Bearing worn out.
2. Replace.
3. Wiring to fan motor.
3. Check for loose
connection or open,
and replace.
4. Defective capacitor.
4. Replace.
5. Fan blade bound.
5. Check and replace.
b) Control Board
1. Defective.
1. See "II. 3. [d] Control
Board Check
Procedure."
[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. Continuous to close in
freeze cycle.
1. Check and replace,
e) Fill or Harvest 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. 9. Adjustment of
Water Regulating
Valve."
[b] 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) Fill or Harvest Water
Valve
1. Diaphragm does not
close.
1. Check for water leaks
with icemaker off.
c) Control Board
1. Defective.
1. See "II. 3. [d] 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.