Hoshizaki IM-21 Service Manual page 97

PROBLEM
[6] (Continued)
[7] All components
run, but no ice
is produced.
[8] Water Pan will
not open.
[9] Water Pan will
not close.
CHECK
e) Controller Board 1. Defective.
f) Actuator Toggle
Switch
g) Discharge Tube
a) Refrigerant
b) Compressor
c) Hot Gas
Solenoid Valve
d) Expansion
Valve
a) Wiring
b) Actuator Toggle
Switch
c) Actuator Motor,
Run Capacitor
d) Thermistor,
Controller Board
a) See [8] above.
b) Hot Gas Valve
POSSIBLE CAUSE
3. Wiring to Pump Motor.
4. Defective or bound
impeller.
5. Mechanical Seal worn
out.
1. Defective.
1. Clogged.
2. Out of position.
1. Undercharged.
2. Air or moisture trapped.
1. Defective valve.
1. Continues to open in
freeze cycle.
1. Continues to close in
freeze cycle.
1. Loose connection or
broken wire.
1. Defective.
1. Defective.
1. See "II. 2. CONTROLLER BOARD".
1. Defective.
93
REMEDY
3. Check for loose
connection or open, and
replace.
4. Replace and clean.
5. Check and replace.
1. See "II. 2. CONTROLLER
BOARD".
1. Replace.
1. Clean.
2. Place in position.
1. Check for leaks and
recharge.
2. Replace Drier, and
recharge.
1. Replace Compressor.
1. Check and replace.
1. Check and replace.
1. Repair or replace.
1. Replace.
1. Replace.
1. Replace.