Hoshizaki F-450MAH - Manual (Page 31)

31
PROBLEM POSSIBLE CAUSE REMEDY
c) Gear Motor Relay 1. Coil winding opened. 1. Replace.
2. Bad contacts. 2. Check for continuity
and replace.
d) Control Timer
(Printed Circuit
Board)
1. Broken. 1. Replace.
e) Gear Motor Protect
Relay
1. Coil winding opened. 1. Replace.
2. Bad contacts. 2. Check for continuity
and replace.
[4] Water has been
supplied. Fan Motor
starts, but
Compressor and
Gear Motor will not
start.
a) Gear Motor Fuse
(Bussman GMD
1.5A)
1. Blown Fuse. 1. See 3. [3]. Find out the
cause and replace the
Fuse.
b) Thermal Protector
(Gear Motor)
2. Bad contacts. 2. Check for continuity
and replace.
[5] Gear Motor starts,
but Compressor will
not start or operates
intermittently
a) X2 Relay on Control
Timer
1. Bad contacts. 1. Check for continuity
and replace.
2. Coil winding opened. 2. Replace Timer.
b) Starter 1. Bad contacts. 1. Check for continuity
and replace.
2. Coil winding opened. 2. Replace.
3. Loose connections. 3. Tighten.
c) Start Capacitor or
Run Capacitor 1. Defective. 1. Replace.
d) Compressor 1. Loose connections. 1. Tighten.
2. Motor winding
opened or grounded.
2. Replace.
3. Motor Protector
tripped.
3. Find out the cause of
overheat or
overcurrent.
e) Power Supply 1. Circuit Ampacity too
low.
1. Install a larger-sized
conductor.
[6] Gear Motor and
Compressor start,
but operate
intermittently
a) Pressure Switch 1. Dirty Air Filter or
Condenser.
1. Clean.
2. Ambient temperature
too warm.
2. Get cooler.
3. Fan not rotating. 3. See "3. [1] a) Fan
Motor."
4. Refrigerant
overcharged.
4. Recharge.
5. Refrigerant line or
components plugged.
5. Clean and replace
drier.
6. Bad contacts. 6. Check for continuity
and replace.
7. Loose connections. 7. Tighten.