Hoshizaki KM-320MAH - Manual (Page 33)

33
C. Low Ice Production
Problem Possible Cause Remedy
[1] Freeze cycle time is
long.
a) See chart A.[3] and check dirty air filter or condenser, ambient or water
temperature, water pressure, water regulator, and refrigerant charge.
b) See chart B.[1] and check float switch, water solenoid valve and controller
board.
[2] Harvest cycle time is
long.
a) See chart B.[2] and check controller board, thermistor, evaporator, ambient
and/or water temperature, water supply line, water solenoid valve, line valve,
and gas valve.
D. Abnormal Ice
Problem Possible Cause Remedy
[1] Small cubes. a) Ice Cube Guide 1. Out of position.
Circulated water falls
into bin.
1. Place in position.
b) See chart A.[5] and check water supply line, water solenoid valve, water
system, pump motor, and controller board.
c) Drain Valve 1. Dirty. 1. Clean.
[2] Cloudy or irregular
cubes.
a) See chart B.[1] and B.[3], and check float switch, water solenoid valve,
controller board, spray tubes, water system, refrigerant charge, and expansion
valve.
b) Spray Guide 1. Dirty. 1. Clean.
c) Water Quality 1. High hardness or
contains impurities.
1. Install a water softener or
filter.
E. Other
Problem Possible Cause Remedy
[1] Icemaker will not stop
when bin is filled with
ice.
a) Bin Control Thermostat 1. Set too cold. 1. Adjust warmer.
2. Defective. 2. Replace
[2] Abnormal noise. a) Pump Motor 1. Bearings worn out. 1. Replace
b) Fan Motor 1. Bearings worn out. 1. Replace
2. Fan blade deformed. 2. Replace fan blade.
3. Fan blade does not
move freely.
3. Replace.
c) Compressor 1. Bearings worn out or
cylinder valve broken.
1. Replace.
2. Mounting pad out of
position.
2. Reinstall.
d) Refrigerant Lines 1. Rub or touch other
lines or surfaces.
1. Replace.
[3] Ice in storage bin
often melts.
a) Bin Drain 1. Plugged. 1. Clean.
b) Icemaker and Bin 1. Drains not run
separately.
1. Separate the drain lines.