Hoshizaki KMS-1400MLH - Manual (Page 40)

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Problem Possible Cause Remedy
[1] Icemaker will not stop
when bin is filled with
ice.
a) Bin Control 1. Defective. 1. Replace.
b) Control Board 1. Defective. 1. See "II.C.4. Control Board
Check Procedure".
[] Abnormal noise. a) Pump Motor 1. Bearings worn out. 1. Replace.
b) Fan Motor 1. Bearings worn out. 1. Replace.
. Fan blade deformed. . Replace fan blade.
3. Fan blade does not
move freely.
3. Replace.
c) Compressor 1. Bearings worn out or
cylinder valve broken.
1. Replace.
. Mounting pad out of
position.
. Reinstall.
d) Refrigerant Lines 1. Rub or touch other
lines or surfaces.
1. Reposition.
[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.
4. Abnormal Ice
Problem Possible Cause Remedy
[1] Small cubes. a) Ice Cube Guide or Ice
Separator
1. Out of position.
Circulated water falls
into bin.
1. Place in position.
b) See chart 1.[5] and check water supply line, water valves, water system, pump
motor, and control board.
c) Drain Water Valve 1. Leaking. 1. Check and replace.
[] Cloudy or irregular
cubes.
a) See chart .[1] and .[3], and check float switch, water valves, control 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.
3. Low Ice Production
Problem Possible Cause Remedy
[1] Freeze cycle time is
long.
a) See chart 1.[3]. Also check dirty condenser coil, ambient temperature and
refrigerant charge.
b) See chart .[1] and check float switch, water valves and control board.
[] Harvest cycle time is
long.
a) See chart .[] and check evaporator, water supply line, harvest water valve,
ambient and/or water temperature, liquid line valve, thermistor, and control
board.
5. Other