Hoshizaki KM-320MAH Service Manual page 30

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.
Possible Cause
c) Overload Protector
d)Starter
e)Start Capacitor or Run
Capacitor
f) Magnetic Contactor
g)Compressor
h)Controller Board
i) Water Regulator
a)Water Solenoid Valve
b)Controller Board
a)Water Supply Line
b)Water Solenoid Valve
c) Water System
1. Bad contacts.
2. Voltage too low.
3. Refrigerant
overcharged or
undercharged.
4. Line valve continues
to close in freeze cycle
and overload protector
operates.
1. Bad contacts.
2. Coil winding opened.
1. Defective.
1. Bad contacts.
2. Coil winding opened.
1. Wiring to compressor. 1. Check for loose
2. Defective.
3. Protector tripped.
1. Defective.
1. Set too high.
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.
3. Pump out check valve
leaking by.
30
Remedy
1. Check for continuity and
replace.
2. Increase voltage.
3. Recharge.
4. Check line valve's
operation in freeze cycle
and replace.
1. Check and replace.
2. Replace.
1. Replace.
1. Check for continuity and
replace.
2. Replace.
connection or open, and
replace.
2. Replace.
3. Reduce temperature.
1. See "II.B.5. Checking the
Controller Board."
1. Adjust lower.
1. Check for water leaks with
icemaker off.
1. See "II.B.5. Checking the
Controller Board."
1. Check and get
recommended pressure.
1. Clean.
1. Check connections for
water leaks, and replace.
2. Clean.
3. Check assembly and
clean.