Hoshizaki DKM-500BAH Service Manual page 27

Problem
[4] Water continues to
be supplied in freeze
cycle.
[5] No water comes from
spray tubes. Water
pump will not start, or
freeze cycle time is
too short.
[6] Fan motor will
not start, or is not
operating.
Possible Cause
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) Inlet Water Valve
b) Control Board
a) Water Supply Line
b) Inlet Water Valve
c) Water System
d) Pump Motor
e) Control Board
a) Fan Motor
1. Loose terminal.
2. Voltage.
3. Dirty condenser.
1. Bad contacts.
2. Coil winding opened.
1. Wiring to compressor. 1. Check for loose
2. Defective.
3. Protector tripped.
1. No power to contactor. 1. See "II.C.5. Control Board
1. Diaphragm does not
close.
1. Defective.
1. Water pressure too
low and water level in
water tank too low.
1. Dirty mesh filter or
orifice and water level
in water tank too low.
1. Water leaks.
2. Clogged.
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.
1. Defective.
1. Motor winding opened. 1. Replace.
2. Bearing worn out.
3. Wiring to fan motor.
4. Defective capacitor.
5. Fan blade bound.
27
Remedy
1. Tighten or replace.
2. Check and correct.
3. Clean.
1. Check and replace.
2. Replace.
connection or open, and
replace.
2. Replace.
3. Reduce temperature.
Check Procedure."
1. Check for water leaks with
icemaker off.
1. See "II.C.5. Control Board
Check Procedure."
1. Check and get
recommended pressure.
1. Clean.
1. Check connections for
water leaks, and replace.
2. Clean.
2. Replace.
connection or open, and
replace.
4. Replace.
5. Replace and clean.
1. See "II.C.5. Control Board
Check Procedure."
2. Replace.
3. Check for loose
connection or open, and
replace.
4. Replace.
5. Check and replace.