Hoshizaki KM-40C-HC Service Manual page 52

PROBLEM
[3] Compressor
will not start
or operates
intermittently.
[4] Water continues
to be supplied in
freeze cycle.
POSSIBLE CAUSE
a) Overload Protector 1. Bad contacts.
b) Starter
c) Start Capacitor
d) Power Relay
e) Compressor
f) Control Board
g) Condenser, Air
Filter
h) Condenser
Thermistor (KM-
80C-HC only)
a) Inlet Water Valve
b) Control Board
c) Water Pressure
2. Voltage too low.
3. Refrigerant
overcharged or
undercharged.
1. Bad contacts.
2. Coil winding opened.
1. Defective.
1. Bad contacts.
2. Coil winding opened.
1. Wiring to compressor.
2. Defective.
3. Protector tripped.
1. Defective.
1. Clogged with dirt and
dust.
1. Dirty air filter or
condenser.
2. Ambient temperature
too warm.
3. Refrigerant
overcharged.
4. Fan not operating.
5. Refrigerant line or
components plugged.
1. Diaphragm does not
close.
1. Defective.
1. Too high.
48
REMEDY
1. Check for continuity and
replace.
2. Increase voltage.
3. Recharge.
1. Check and replace.
2. Replace.
1. Replace.
1. Replace control board.
2. Replace control board.
1. Check for loose
connection or open
circuit, and replace.
2. Replace.
3. Reduce temperature
and verify cause.
1. Check and replace.
1. Clean and unclog.
1. Clean.
2. Reduce ambient
temperature.
3. Recharge.
4. See chart 6 - [2].
5. Clean and replace drier.
1. Check for water leaks
with icemaker off.
Replace if necessary.
1. Check and replace.
1. Reduce.