Hoshizaki KMD-901MWH Service Manual page 36

Problem
[1] The icemaker will not
start. (continued)
[2] Water continues to
be supplied, and the
icemaker will not
start.
[3] Compressor will
not start or stops
operating.
[4] Water continues to
be supplied in freeze
cycle.
[5] Water pump will not
start.
Possible Cause
l) Inlet Water Valve
(continued)
m)Control Board
a) Float Switch
b) Control Board
a) Magnetic Contactor
b) Start Capacitor or Run
Capacitor
c) Internal Overload
Protector Open (check
1 through 3 to the right
and d through f below)
d) Starter
e) Compressor
f) Control Board
a) Water Pressure
b) Inlet Water Valve
c) Control Board
a) Pump Motor
2. Coil winding opened.
3. Wiring to water valve. 3. Check for loose
1. Defective or in alarm. 1. See "II.C.4. Control Board
1. Connector
disconnected.
2. Defective switch.
3. Float does not move
freely.
1. Defective.
1. Bad contacts.
2. Coil winding opened.
1. Defective.
1. Loose terminal.
2. Voltage.
3. Dirty condenser.
1. Bad contacts.
2. Coil winding opened.
1. Power supply not
within specifications.
2. Wiring to compressor. 2. Check for loose
3. Defective.
4. Protector tripped.
1. No power to contactor. 1. See "II.C.4. Control Board
1. Too high.
1. Diaphragm does not
close.
1. Defective.
1. Motor winding
opened.
2. Bearing worn out.
3. Wiring to pump motor. 3. Check for loose
4. Defective capacitor.
5. Defective or bound
impeller.
36
Remedy
2. Replace.
connection or open, and
replace.
Check Procedure."
1. Reconnect.
2. Check and replace.
3. Clean or replace.
1. See "II.C.4. Control Board
Check Procedure."
1. Check for continuity and
replace.
2. Replace.
1. Replace.
1. Tighten or replace.
2. Check and correct.
3. Clean.
1. Check and replace.
2. Replace.
1. Refer to nameplate and
correct.
connection or open, and
replace.
3. Replace.
4. Reduce temperature.
Check Procedure."
1. Reduce.
1. Check for water leaks with
icemaker off.
1. See "II.C.4. Control Board
Check Procedure."
1. Replace.
2. Replace.
connection or open, and
replace.
4. Replace.
5. Replace and clean.