Hoshizaki F-450MAH Refrigerator User Manual


 
34
3. Other
PROBLEM POSSIBLE CAUSE REMEDY
[1] Abnormal noise a) Fan Motor 1. Bearing worn out. 1. Replace.
2. Fan blade deformed. 2. Replace fan blade.
3. Fan blade does not
move freely.
3. Replace.
b) Compressor 1. Bearings worn out,
or cylinder valve
broken.
1. Replace.
2. Mounting pad out of
position.
2. Reinstall.
c) Refrigerant Lines 1. Rub or touch lines or
other surfaces.
1. Replace.
d) Gear Motor (Ice
Making)
1. Bearing or Gear
worn out / damaged.
1. Replace.
e) Evaporator 1. Low-side pressure
too low.
1. See if Expansion
Valve Bulb is mounted
properly, and replace
the valve if necessary.
2. Scale on inside wall
of Freezing Cylinder.
2. Remove Auger. Use
"SCALE AWAY" or
"LIME-A-WAY"
solution to clean
periodically. If the
water is found hard by
testing, install a
softener.
[2] Overflow from
Reservoir (Water
does not stop.)
a) Water Supply 1. Water pressure too
high.
1. Install a pressure
Reducing Valve
b) Control Water Valve 1. Diaphragm does not
close.
1. Clean or replace.
c) Float Switch 1. Bad contacts. 1. Check for continuity
and replace.
[3] Gear Motor Fuse
blows or circuit
breaker trips
frequently
a) Power Supply
Voltage
1. Too high or too low. 1. Connect the unit to a
power supply of
proper voltage.
b) Evaporator Assy 1. Bearings or Auger
worn out.
1. Replace Bearing or
Auger.
c) Bin Control 1. Bad contacts. 1. Check for continuity
and replace.
2. Activator does not
move freely.
2. Clean Axle and its
corresponding holes
or replace Bin Control.