Filter
Top Products
Page 16
PROBLEM POSSIBLE CAUSE TO CORRECT
Replace fuse, reset breaker. If repeats, check fuse or
breaker size. Check for shorts in unit wiring and compo-
nents
Plug in power cord
Set switch correctly.
Test for continuity in each switch position.
Check wiring and connections. Reconnect per wiring
diagram.
Fuse blown or circuit tripped.
Power cord not plugged in.
System switch in "Off" position.
Inoperative system switch.
Loose or disconnected wiring at
switch or other components
Unit does not run.
PROBLEM POSSIBLE CAUSE TO CORRECT
Dirty filter.
Restricted air flow.
Inoperative thermostat.
Short of refrigerant.
Inoperative fan motor.
Partially restricted capillary.
Clean as recommended in Owener's Manual.
Check for dirty or obstructed coil - clean as required.
Test for shorted thermostat or stuck contacts.
De-ice coil and check for leak.
Test fan motor and replace if inoperative.
De-ice coil. Check temperature differential across coil.
Touch test coil return bends for same temperature. Test for
low running current.
Evaporator coil
freezes up.
PROBLEM POSSIBLE CAUSE TO CORRECT
Excessive heat load.
Restriction in line.
Refrigerant leak.
Thermostat contacts stuck.
Thermostat incorrectly wired.
Unit undersized. Test cooling performance of unit. Re-
place with larger unit.
Check for partially iced coil. Check temperature split
across coil.
Check for oil at silver soldered connections. Check for
partially iced coil. Check split across coil. Check for low
running amperage.
Check operation of thermostat. Replace if contacts remain
closed.
Refer to appropriate wiring diagram.
Compressor runs
continually. Does not
cycle off.
PROBLEM POSSIBLE CAUSE TO CORRECT
Thermostat does not
turn unit off.
Replace thermostat.
Turn to higher temperature setting to see if unit
cycles off.
Refer to appropriate wiring diagram.
Refer to Sizing Chart.
Thermostat contacts stuck.
Thermostat set at coldest point.
Incorrect wiring.
Unit undersized for area to be
cooled.