Hoshizaki KM-515MAH Service Manual page 37

Problem
[3] Compressor will
not start or stops
operating. (continued)
[4] Water continues to
be supplied in freeze
cycle.
[5] Water pump will not
start.
[6] Freeze cycle time is
too short.
[7] Fan motor will
not start, or is not
operating. (except
water-cooled model)
Possible Cause
d) Starter
e) Compressor
f) Control Board
a) Water Pressure
b) Inlet Water Valve
c) Control Board
a) Pump Motor
b) Control Board
c) Control Switch
a) Pump Out Check Valve 1. Leaking by.
b) Float Switch
c) Control Board
a) Fan Motor
b) Control Board
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. 1. Replace.
2. Bearing worn out.
3. Wiring to pump motor. 3. Check for loose
4. Defective capacitor.
5. Defective or bound
impeller.
6. Mechanical seal worn
out.
1. Defective.
1. Bad contacts.
1. Dirty or erratic
operation.
1. Defective.
1. Motor winding opened. 1. Replace.
2. Bearing worn out.
3. Wiring to fan motor.
4. Defective capacitor.
5. Fan blade bound.
1. Defective.
37
Remedy
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."
2. Replace.
connection or open, and
replace.
4. Replace.
5. Replace and clean.
6. Check and replace.
1. See "II.C.4. Control Board
Check Procedure."
1. Replace.
1. Clean or replace.
1. Clean or replace.
1. See "II.C.4. Control Board
Check Procedure."
2. Replace.
3. Check for loose
connection or open, and
replace.
4. Replace.
5. Check and replace.
1. See "II.C.4. Control Board
Check Procedure."