Abnormal Ice; Others - Hoshizaki KM-500MAF Service Manual

3. LOW ICE PRODUCTION
PROBLEM
[1] Freeze cycle a) See chart 1 - [3], and check dirty Air Filter or Condenser, ambient or water
time is long.
b) See chart 2 - [1], and check Float Switch, Water Solenoid Valve or Controller
[2] Harvest cycle a) See chart 2 - [2], and check Controller Board, Thermistor, Evaporator, ambient
time is long

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
bin is filled
with ice.
[2] Abnormal a) Pump Motor
noise b) Fan Motor
c) Compressor
d) Refrigerant Lines
[3] Ice in storage a) Bin Drain
bin often
melts.
POSSIBLE CAUSE
temperature, water pressure, Water Regulator or refrigerant charge.
Board.
and/or water temperature, water supply line, Water Solenoid Valve, or Expansion
Valve.
POSSIBLE CAUSE
Pump Motor or Controller Board.
Controller Board, Spray Tubes, water system, refrigerant charge or Expansion
Valve.
POSSIBLE CAUSE
Thermostat
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.
39
REMEDY
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.