Diagnostic Charts; No Ice Production - Hoshizaki KM-515MAH 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) Fuse (Control Box)
d) Control Switch
e) Bin Control Thermostat 1. Tripped with bin filled
f) High Pressure Control 1. Bad contacts.
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.
1. Blown.
1. "OFF" or "WASH"
position.
2. Bad contacts.
with ice.
2. Ambient temperature
too cool.
3. Set too warm.
4. Bulb out of position.
5. 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)
35
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. Check for short circuit and
replace.
1. Move to "ICE" position.
2. Check for continuity and
replace.
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 continuity and
replace.
2. Clean.
3. Reduce temperature.
4. Recharge.
5. See chart 1.[7]
6. Clean and replace drier.
7. Check and get
recommended pressure.