Hoshizaki F-1500MAH Service Manual page 46

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