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Sealed System Heat Pump
9,000 BTU heat-pump model shown.
Compressor
Wiring – Compressor Check
CAUTION: Risk of inMury .eep head clear of
terminal area Zhen 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 Àow 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 Àow 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