Low Ice Production; Abnormal Ice; Other - Hoshizaki KMS-1230MLH Service Manual

3. Low Ice Production

Problem
[1] Freeze cycle time is
long.
[] Harvest cycle time is
long.

4. Abnormal Ice

Problem
[1] Small cubes.
[] Cloudy or irregular
cubes.

5. Other

Problem
[1] Icemaker will not stop
when bin is filled with
ice.
[] Abnormal noise.
[3] Ice in storage bin
often melts.
Possible Cause
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.
a) See chart .[] and check evaporator, water supply line, harvest water valve,
ambient and/or water temperature, liquid line valve, thermistor, and control board.
Possible Cause
a) Ice Cube Guide or Ice
Separator
b) See chart 1.[5] and check water supply line, water valves, water system, pump
motor, and control board.
c) Drain Water Valve
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
c) Water Quality
Possible Cause
a) Bin Control
b) Control Board
a) Pump Motor
b) Fan Motor
c) Compressor
d) Refrigerant Lines
a) Bin Drain
b) Icemaker and Bin
1. Out of position.
Circulated water falls
into bin.
1. Leaking.
1. Dirty.
1. High hardness or
contains impurities.
1. Defective.
1. Defective.
1. Bearings worn out.
1. Bearings worn out.
. Fan blade deformed.
3. Fan blade does not
move freely.
1. Bearings worn out or
cylinder valve broken.
. Mounting pad out of
position.
1. Rub or touch other
lines or surfaces.
1. Plugged.
1. Drains not run
separately.
38
Remedy
Remedy
1. Place in position.
1. Check and replace.
1. Clean.
1. Install a water softener or
filter.
Remedy
1. Replace.
1. See "II.C.4. Control Board
Check Procedure".
1. Replace.
1. Replace.
. Replace fan blade.
3. Replace.
1. Replace.
. Reinstall.
1. Reposition.
1. Clean.
1. Separate the drain lines.