Abnormal Ice; Others - Hoshizaki KM-900MAH Service Manual

4. ABNORMAL ICE

PROBLEM
[1] Small Cube a) Ice Cube Guide
b) See chart 1 - [5], and check water supply line, Water Solenoid Valve, water system,
c) Drain Valve
[2] Cloudy or a) See chart 2 - [1] and - [3], and check Float Switch, Water Solenoid Valve,
irregular cube
b) Spray Guide
c) Water Quality

5. OTHERS

PROBLEM
[1] Icemaker will a) Bin Control
not stop when
For mechanical
bin is filled
bin control
with ice.
see "II. 3. [c]"
[2] Abnormal
noise b) Fan Motor
c) Compressor
d) Refrigerant Lines
[3] Ice in storage a) Bin Drain
bin often
melts.
POSSIBLE CAUSE
Pump Motor or Controller Board.
Controller Board, Spray Tubes, water system, refrigerant charge or Expansion
Valve.
POSSIBLE CAUSE
Thermostat
a) Pump Motor
1. Out of position.
Circulated water falls into
bin.
1. Dirty.
1. Dirty.
1. High hardness or contains
impurities.
1. Set too cold.
2. 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 lines or other
surfaces.
1. Plugged.
52
REMEDY
1. Place in position.
1. Clean.
1. Clean.
1. Install a water filter or
softener.
REMEDY
1. Adjust warmer.
2. Replace.
1. Replace.
1. Replace.
2. Replace fan blade.
3. Replace.
1. Replace.
2. Reinstall
1. Replace.
1. Clean.