Other - Hoshizaki KMD-450MAH Service Manual

Problem
[1] Small cubes.
(continued)
[2] Cloudy or irregular
cubes.

5. Other

Problem
[1] Icemaker will not stop
when bin is filled with
ice.
[2] Abnormal noise.
[3] Ice in dispenser
unit/storage bin often
melts.
[4] Pump motor
de-energizes for
10 seconds during
freeze cycle.
Possible Cause
f) Control Board
a) Evaporator
b) Water System
c) Spray Guide
Possible Cause
a) Bin Control
a) Pump Motor
b) Fan Motor (except
water-cooled model)
c) Compressor
d) Refrigerant Lines
a) Drain Line(s)
b) Icemaker and
Dispenser Unit/Storage
Bin
c) Ice Cube Guide
a) Control Board
1. Defective.
1. Frozen up.
2. Scaled up.
3. Damaged.
1. Water supply line too
small; requires 3/8"
OD line dedicated per
machine.
2. Water filter clogged or
flow rate too small.
3. High hardness or
contains impurities.
1. Dirty.
1. Movement restricted.
2. Loose connection.
3. Defective.
1. Bearings worn out.
1. Bearings worn out.
2. Fan blade deformed.
3. Fan blade does not
move freely.
1. Bearings worn out or
cylinder valve broken.
2. Mounting pad out of
position.
1. Rub or touch other
lines or surfaces.
1. Plugged.
1. Drains not run
separately.
1. Out of position.
Circulated water falls
into bin.
1. Anti-slush control
(S2 dip switch 6)
activated.
49
Remedy
1. See "IV.B. Control Board
Check."
1. See chart 2.
2. Clean
3. Replace.
1. Increase water line size.
2. Replace filter or install a
higher flow rate filter.
3. Install a water softener or
filter.
1. Clean.
Remedy
1. Check and free.
2. Check and reconnect.
3. See "IV.C. Bin Control
Check and Cleaning."
1. Replace.
1. Replace.
2. Replace.
3. Replace.
1. Replace.
2. Reinstall.
1. Reposition.
1. Clean.
1. Separate the drain lines.
1. Place in position.
1. Default setting on certain
models. Set to factory
default position. See "II.
C.3.a) Default Dip Switch
Settings."