Hoshizaki KML-631MAH Service Manual page 37

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] No water comes from
spray tubes. Water
pump will not start, or
freeze cycle time is
too short.
Possible Cause
m)Control Switch
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) Inlet Water Valve
b) Control Board
a) Water Supply Line
b) Inlet Water Valve
c) Water System
d) Pump Motor
1. SERVICE position.
2. Bad contacts.
1. Connector
disconnected.
2. Leads opened or
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. Wiring to compressor. 1. Check for loose
2. Defective.
3. Protector tripped.
1. No power to contactor. 1. See "II.C.4. 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. Pump relay bad.
2. Motor winding opened. 2. Replace.
37
Remedy
1. Move to ICE position.
2. Check and replace.
1. Place in position.
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.
connection or open, and
replace.
2. Replace.
3. Reduce temperature.
Check Procedure."
1. Check for water leaks with
icemaker off.
1. See "II.C.4. Control Board
Check Procedure."
1. Check and get
recommended pressure.
1. Clean.
1. Check connections for
water leaks, and replace.
2. Clean.
1. Replace.