Table of Contents
Advertisement
PROBLEM
Compressor will not start
(Parts of this diagnosis and
service procedure must be
performed by a qualified
refrigeration system service
technician.)
Compressor runs, but no
refrigeration or insufficient
refrigeration.
TROUBLESHOOTING CHART
CAUSE
1.Service cord unplugged
2.No power at outlet
3.Thermostat:
a.Turned off
b.Points not closed
4.Relay or overload
5.Loose connections
6.Capacitor
7.Motor windings open,
shorted or grounded.
8.Timer
9.Compressor stuck
1.Air circulation on high-side:
a.Condenser or grille
blocked by lint.
b.Condenser fan not
running or too slow.
c.Unit compartment rear
cover not in place.
d.Air obstruction in back or
above cabinet.
PROCEDURE
1.Plug in electrical outlet
2.Check to confirm 120VAC, 60 Hz at out-
let.
3.
a.Turn knob clockwise
b.Place jumper between terminals. If
compressor starts, thermostat is defec-
tive and should be replaced.
4.Using a start cord, check compressor di-
rectly, if compressor starts, check relay
and overload separately with ohmmeter
and replace defective part. If compres-
sor does not start, call for a qualified
service technician.
5.Check circuit from power source to com-
pressor.
6.Check capacitor and replace if defective.
7.Check winding with ohmmeter. See wir-
ing diagram for resistance values. Re-
place compressor if motor is defective.
8.a.Timer may be in defrost cycle. Turn
clockwise past 2 o'clock.
b. Wired wrong
c. Check timer and replace if defective.
9.Try starting with starting cord. If compres-
sor won't start, call for a qualified service
technician.
1.
a.Clean condenser and air passage with
vacuum cleaner.
b.Check for continuity in fan motor, re
place if defective.
c. Put unit compartment rear cover in
place.
d. Clean condenser or back of cabinet and
make sure there is three inches or more
of free air space above the cabinet.
73
Advertisement
Table of Contents
