15
Model 20
Troubleshooting Guide
PROBLEM
PROBABLE CAUSE
REMEDY
3. Compressor does not
operate after the control
switch is pressed, but the
fan motor
does
operate.
a. Faulty start capacitor.
a. Call a service technician to
replace the start capacitor.
b. Faulty capacitor relay.
b. Call a service technician to
replace the capacitor relay.
c. Faulty run capacitor, as evidenced
by compressor which started but
was unable to stay running.
c. Call a service technician to
replace the run capacitor.
d. Compressor is going out on
overload.
d. Allow the compressor to cool. It
will automatically start up again.
4. Compressor continually
goes out on overload.
a. Compressor motor windings short
to ground. Disconnect power and
check all three terminals in the
compressor terminal box for
continuity to compressor casing.
a. Call a service technician.
b. Low or high line voltage. While the
unit is running, check voltage
supply at the compressor relay.
b. Contact an electrician to correct
incoming voltage. If low voltage,
check to be sure the unit is the
only appliance running on the
same 15A circuit.
c. Tight bearings, causing the motor
to overheat as evidenced by a
high amperage reading at the
compressor terminal box. The
RLA of the motor is stamped on
the side of the compressor.
c. Call a service technician to
replace the compressor.
d. Faulty run capacitor.
d. Call a service technician to
replace the run capacitor.
e. Faulty start capacitor.
e. Call a service technician to
replace the start capacitor.
f. Faulty capacitor relay as
evidenced by compressor which
does not start, or the start
capacitor will continue to break
down.
f. Call a service technician to
replace the relay and, if needed,
replace the start capacitor.
