42
F. Diagnostic Charts
1. 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) Bin Control
1. Tripped with bin filled
with ice.
1. Remove ice.
2. Defective.
2. See "IV.C. Bin Control
Check."
d) Fuse (Control Box)
1. Blown.
1. Check for short circuit and
replace.
e) Control Switch
1. "OFF" or "SERVICE"
position.
1. Move to "ICE" position.
2. Bad contacts.
2. Check for continuity and
replace.
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. Recover, evacuate, and
recharge.
5. Fan not operating
(except water-cooled
model).
5. See chart 1.[7].
6. Refrigerant lines or
components restricted.
6. Recover, repair, replace
drier, evacuate, and
recharge.
7. Condenser water
pressure too low or off
(water-cooled model).
7. Check and get
recommended pressure.
g) Transformer
1. Coil winding open 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 open
and high temperature
or harvest backup
timer safety operates
(1 beep or 2 beep
alarm).
1. See "IV.E. Thermistor
Check."
