SERVICE DIAGNOSIS
SYMPTOM
POSSIBLE CAUSE
PROBABLE CORRECTION
No ice, machine does not run
1. No electrical power
1. Restore power
2. Circuit breaker tripped or fuse
blown
2. Reset breaker or replace fuse,
check for electrical fault.
3. High pressure control open.
3. Reset HPC, check water
supply to water cooled condenser.
4. ice level control holding
machine off
4. Check ice level control circuit.
5. High temp. cut out open
5. Hot gas valve leaks thru,
replace hot gas valve
6. Timer switch open
6. Replace timer
7. Master switch open
7. Check or replace switch.
8. Circuit board open
8. Replace circuit board.
No ice, compressor does not run,
rest of ice machine does.
1. Open contactor coil
1. Replace contactor
No ice, no water over evaporators 1. Water pump does not pump
1. Check/replace water pump
2. No water in reservoir
2. Check/replace water inlet valve.
No ice, everything runs
1. Too much heat load
1. Check for slow leak thru of
water inlet valve.
2. Low on refrigerant
2. Check pressures, if low
find/repair leak; weigh in charge.
3. Suction pressure too high
3. Defective compressor - replace
Low ice production
1. Too much heat load.
1. Check water temperature.
2. Compressor inefficient.
2. Replace compressor
3. Non condensable gasses in
refrigeration system.
3. Check head pressure or water
flow, if very high, and no other
reason is suspected, replace
refrigerant charge.
CME865W & CME1002W
December, 1994
Page 20
