Hoshizaki KM-100A Service Manual page 32

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
[4] Water a) Inlet Water Valve
continues to
be supplied in
freeze cycle.
b) Control Board
POSSIBLE CAUSE
Control
Protector
Filter
1. Connector
disconnected.
2. Leads opened or
defective switch.
3. Float does not move
freely.
1. Defective.
1. WASH position.
2. Bad contacts.
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. Bad contacts.
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. Diaphragm does not
close.
1. Defective.
29
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 2 - [6].
5. 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. 3. [d] CONTROL
BOARD CHECK
PROCEDURE".
1. Clean and unclog.
1. Check for water leaks
with icemaker off.
Replace if necessary.
1. See "II. 3. [d] CONTROL
BOARD CHECK
PROCEDURE".