Hoshizaki KM-230BAJ Service Manual page 26

PROBLEM
[2] Water a) Float Switch
continues to be
supplied, and
the icemaker
will not start.
b) Control Board
[3] Compressor a) Control Switch
will not start or
operates
b) High Pressure
intermittently.
c) Overload
d) Starter
e) Start Capacitor
f) Power Relay
g) Compressor
h) Control Board
i) Condenser, Air
j) Water Regulating
POSSIBLE CAUSE
1. Connector disconnected.
2. Leads open or defective
3. Float does not move freely.
1. Defective.
1. SERVICE position.
2. Bad contacts.
1. Dirty air filter or condenser.
Control
2. Ambient temperature too
3. Refrigerant overcharged.
4. Fan not operating.
5. Condenser water pressure
6. Condenser water
7. Refrigerant line or
1. Bad contacts.
Protector
2. Voltage too low.
3. Refrigerant overcharged or
1. Bad contacts.
2. Coil winding open.
1. Defective.
1. Bad contacts.
2. Coil winding open.
1. Wiring to compressor.
2. Defective.
3. Protector tripped.
1. Defective.
1. Clogged with dirt and dust.
Filter
1. Set too high.
Valve
2. Clogged or defective.
(water-cooled
model)
switch.
warm.
too low or off (water-cooled
model).
temperature too warm
(water-cooled model).
components plugged.
undercharged.
25
REMEDY
1. Reconnect.
2. Check and replace.
3. Clean or replace.
1. Replace.
1. Move to ICE position.
2. Check and replace.
1. Clean.
2. Reduce ambient
temperature.
3. Recharge.
4. See chart 1 - [6].
5. Check and get
recommended pressure.
6. Check and get
recommended
temperature.
7. Clean and replace drier.
1. Check for continuity and
replace.
2. Increase voltage.
3. Recharge.
1. Check and replace.
2. Replace.
1. Replace.
1. Check for continuity and
replace.
2. Replace.
1. Check for loose
connection or open, and
replace.
2. Replace.
3. Reduce temperature and
verify cause.
1. See "II.C. Control Board
Check".
1. Clean and unclog.
1. Adjust lower.
2. Clean or replace.