Kelvinator R-404A Installation Manual page 50

CABINET TROUBLESHOOTING GUIDE
TROUBLE
UNIT RUNS ALL THE TIME.
NOISY OPERATION.
UNIT CYCLES ON OVERLOAD.
STUCK MOTOR COMPRESSOR
CABINET RUNS ALL THE
ITEM. TEMP TOO COLD.
RAPID ICE BUILDUP
ON EVAP.
FREEZER WORKS, THEN
WARMS UP.
48
COMMON CAUSE
Not enough air circulation around cabinet or
air circulation is restricted.
Poor lid seal.
Refrigerant charge.
Room temperature too warm.
Cold Control.
Loose flooring or floor not firm.
Tubing contacting cabinet or other tubing.
Cabinet not level.
Fan hitting shroud.
Compressor mechanically grounded.
Broken relay.
Weak overload protector.
Low voltage.
Broken valve.
Faulty thermostat.
Leaky door gasket; lid left open.
Moisture in system.
REMEDY
Relocate cabinet or provide proper
clearances around cabinet.
Check and make necessary adjustments.
Undercharge or overcharge--check,
evacuate and recharge with proper charge.
Ventilate room as much as possible.
Check control; if it allows unit to operate
all the time, replace control.
Tighten flooring or brace floor.
Move tubing.
Level cabinet.
Move fan blade.
Replace compressor mounts.
Replace relay.
Replace overload protector.
Check outlet with voltmeter. Underload
voltage should be 115V plus or minus
10%. Check for several appliances on
same circuit or extremely long or
undersized extension cord being used.
Replace motor compressor.
Check thermostat—test and replace if
necessary.
Replace gasket; close lids when not serving.
Evacuate and recharge.
MAINTENANCE & REPAIR