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Sealed System Heat Pump
9,000 BTU heat-pump model shown.
Compressor
Wiring – Compressor Check
CAUTION: Risk of in
M
ury
.
eep head clear of
terminal area
Z
hen cover is removed
Keep head clear of terminal area when cover is
removed.
Check windings
¿
rst. If open or grounded,
DO NOT
apply power to compressor terminals.
Reversing Valve
On heat-pump models, the refrigerant
À
ow direction
is controlled by the reversing valve assembly. In the
cooling mode, the main board supplies line voltage
to the solenoid coil, which causes the valve to
switch
À
ow direction. With no voltage applied to the
solenoid coil, the valve will be in the heating mode.
The solenoid coil attaches to the valve body with
a 5/16 in. hex head bolt. The 230/208 volt coil has
pink wires and measures approximately 1.5k ohms.
Sealed System Heat Pump Components
*Shown with solenoid removed.
Reversing Valve Solenoid Coil