Sub-Zero 315 - Manual (Page 21)

21
TROUBLESHOOTING
Problem Possible Cause Probable Correction
No ice falling in bin, but Ice may be stuck in the Check water supply – filter may be restricted
ice maker operates evaporator and the unit is
"frozen up"
Check inlet water valve – screen may be
restricted, or valve does not operate
Hot gas valve may not operate -check and
repair/replace
Harvest time set too short – timer needs
adjustment
Too much heat load Inlet water valve leaks through, needs to be
replaced
No water spray Water pump does not work, replace it
Water leak from reservoir, locate and repair
Cube size control will not close See "Too much heat load" or "not enough
refrigerant"
Control defective - must be replaced
No airflow Fan motor not turning, needs to be replaced
Fan blade broken, needs to be replaced
Condenser completely blocked up, needs cleaning
Not enough refrigerant Add low side access valve, locate leak, recover
refrigerant, repair, replace dryer, evacuate and
weigh in the nameplate charge
Restricted system Add low side access valve, recover refrigerant,
replace dryer, evacuate and weigh in the
nameplate charge
Hot gas valve leaks through Add low side access valve, recover refrigerant,
replace hot gas valve and dryer, evacuate and
weigh in the nameplate charge
Compressor will not operate or Start relay or capacitor needs to be replaced
pumps poorly.
Add low side access valve, recover refrigerant,
replace compressor and dryer, evacuate and
weigh in the nameplate charge.