Hoshizaki KM-320MAH - Manual (Page 30)

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Problem Possible Cause Remedy
c) Overload Protector 1. Bad contacts. 1. Check for continuity and
replace.
2. Voltage too low. 2. Increase voltage.
3. Refrigerant
overcharged or
undercharged.
3. Recharge.
4. Line valve continues
to close in freeze cycle
and overload protector
operates.
4. Check line valve’s
operation in freeze cycle
and replace.
d)Starter 1. Bad contacts. 1. Check and replace.
2. Coil winding opened. 2. Replace.
e)Start Capacitor or Run
Capacitor
1. Defective. 1. Replace.
f) Magnetic Contactor 1. Bad contacts. 1. Check for continuity and
replace.
2. Coil winding opened. 2. Replace.
g)Compressor 1. Wiring to compressor. 1. Check for loose
connection or open, and
replace.
2. Defective. 2. Replace.
3. Protector tripped. 3. Reduce temperature.
h)Controller Board 1. Defective. 1. See "II.B.5. Checking the
Controller Board."
i) Water Regulator 1. Set too high. 1. Adjust lower.
[4] Water continues to
be supplied in freeze
cycle.
a)Water Solenoid Valve 1. Diaphragm does not
close.
1. Check for water leaks with
icemaker off.
b)Controller Board 1. Defective. 1. See "II.B.5. Checking the
Controller Board."
[5] No water comes from
spray tubes. Water
pump will not start, or
freeze cycle time is
too short.
a)Water Supply Line 1. Water pressure too
low and water level in
water tank too low.
1. Check and get
recommended pressure.
b)Water Solenoid Valve 1. Dirty mesh filter or
orifice and water level
in water tank too low.
1. Clean.
c) Water System 1. Water leaks. 1. Check connections for
water leaks, and replace.
2. Clogged. 2. Clean.
3. Pump out check valve
leaking by.
3. Check assembly and
clean.