Hoshizaki F-1500MA-C, Service Manual

Page: 46 / 70

46
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. Check for continuity and
replace.
[4] a) Gear Motor Fuse
(BUSSMAN GMD
1.5A)
1. Blown Fuse. 1. See "3. [3] Gear Motor
Protector operates
frequently." Find out the
cause and replace the
Fuse.
b) Thermal Protector
(Gear Motor)
1. Bad contacts. 1. Check for continuity and
replace.
[5] Gear Motor starts,
but Compressor (for
Solenoid Valves) will
not start or operates
intermittently
a) Pressure Switch 1. Dirty Air Filter or
Condenser.
1. Clean.
2. Ambient or condenser
water temperature too
warm.
2. Get cooler.
3. Condenser water
pressure too low or
off. (Water-cooled
model only)
3. Check and get
recommended pressure.
4. Water Regulating
Valve set too high.
(Water-cooled model
only)
4. Adjust it lower.
5. Fan not rotating. 5. See "3. [1] a) Fan Motor."
6. Refrigerant
overcharged.
6. Recharge.
7. Refrigerant line or
components plugged.
7. Clean and replace drier.
8. Bad contacts. 8. Check for continuity and
replace.
9. Loose connections. 9. Tighten.
b) 1. Bad contacts. 1. Replace. Check for
continuity and replace.
2. Coil winding opened. 2. Replace Timer.
c) Starter 1. Bad contacts. 1. Check for continuity and
replace.
2. Coil winding opened. 2. Replace.
3. Loose Connections. 3. Tighten.
d) Start Capacitor or Run
Capacitor
1. Defective. 1. Replace.
Water has been
supplied, Fan Motor
starts, but Gear
Motor and
Compressor will not
start.
X2 Relay on Control
Timer