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2. DIAGNOSTIC CHARTS
[a] NO ICE PRODUCTION
PROBLEM
POSSIBLE CAUSE
REMEDY
[1] The icemaker will
not start.
a) Power Supply
1. Off, blown fuse, or
tripped breaker.
1. Turn on, replace, or
reset.
2. Loose connection.
2. Tighten.
3. Bad contacts.
3. Check for continuity
and replace.
4. Not within specifications. 4. Refer to nameplate and
correct.
b) Water Supply
1. Water supply off or
pressure too low.
1. Check and get
recommended
pressure.
c) Fuse (Control Box)
1. Blown.
1. Check for short circuit
and replace.
d) Control Switch
1. “OFF” or “SERVICE”
position.
1. Move to “ICE” position.
2. Bad contacts.
2. Check for continuity
and replace.
e) Bin Control
1. Tripped with bin filled
with ice.
1. Remove ice.
2. Defective.
2. See “II. 6. [b] Bin
Control Check
Procedure.”
f) High Pressure Control
1. Bad contacts.
1. Check for continuity
and replace.
2. Dirty air filter or
condenser.
2. Clean.
3. Ambient or condenser
water temperature too
warm.
3. Reduce temperature.
4. Refrigerant
overcharged.
4. Recharge.
5. Fan not operating.
(except water-cooled
model)
5. See chart [a] [7].
6. Refrigerant line or
components plugged.
6. Clean and replace drier.
7. Condenser water
pressure too low or off.
(water-cooled model)
7. Check and get
recommended
pressure.
g) Transformer
1. Coil winding opened or
shorted.
1. Replace.
h) Wiring to Control
Board
1. Loose connections or
open.
1. Check for continuity
and replace.
i) Thermistor
1. Leads shorted or
opened and high
temperature or harvest
backup timer safety
operates. (1 beep or 2
beep alarm)
1. See "II. 4. Harvest
Control - Thermistor."
j) Hot Gas Valve
1. Continues to open in
freeze cycle and freeze
timer safety operates. (3
beep alarm)
1. Check for hot gas valve
stuck open and replace.
