Diagnostic Charts; No Ice Production - Hoshizaki KML-351MAH Service Manual

B. Diagnostic Charts

1. No Ice Production

Problem
[1] The icemaker will not
start.
Possible Cause
a) Power Supply
b) Water Supply
c) Bin Control Thermostat 1. Tripped with bin filled
d) Fuse (Control Box)
e) Control Switch
f) High Pressure Control
g) Transformer
h) Wiring to Control Board 1. Loose connections or
1. Off, blown fuse, or
tripped breaker.
2. Loose connection.
3. Bad contacts.
4. Not within
specifications.
1. Water supply off or
pressure too low.
with ice.
2. Ambient temperature
too cool.
3. Set too warm.
4. Bulb out of position.
5. Bad contacts.
1. Blown.
1. "OFF" or "SERVICE"
position.
2. Bad contacts.
1. Bad contacts.
2. Dirty air filter or
condenser.
3. Ambient or condenser
water temperature too
warm.
4. Refrigerant
overcharged.
5. Fan not operating.
(except water-cooled
model)
6. Refrigerant line or
components plugged.
7. Condenser water
pressure too low or
off. (water-cooled
model only)
1. Coil winding open or
shorted.
open.
33
Remedy
1. Turn on, replace, or reset.
2. Tighten.
3. Check for continuity and
replace.
4. Refer to nameplate and
correct.
1. Check and get
recommended pressure.
1. Remove ice.
2. Increase ambient
temperature.
3. See "II.E. Bin Control."
4. Place in position.
5. Check for continuity and
replace.
1. Check for short circuit and
replace.
1. Move to "ICE" position.
2. Check for continuity and
replace.
1. Check for continuity and
replace.
2. Clean.
3. Reduce temperature.
4. Recover, evacuate, and
recharge.
5. See chart 1.[7].
6. Clean and replace drier.
7. Check and get
recommended pressure.
1. Replace.
1. Check for continuity and
replace.