Zone 2 ac putting out heat,ie. COOL on.
Any fix for that problem? Duo therm. By domedic.
Forum Discussion
9. REVERSING VALVE
The reversing valve is the heart of a heat pump. It changes
the direction of the refrigerant flow through the coils, and
changes the system from cooling to heating.
The reversing valveís solenoid can be energized in either the
heat or cool mode of operation. Duo-Therm roof top heat
pumps have the solenoid energized in the cool mode.
One method of checking the reversing valve is to feel the
refrigerant line at the top of the inside coil. In the COOL
mode, this line will be cool to the touch. In the heat mode
the line will be warm or hot to the touch. If you do not feel a cold line in the cooling mode, the direction of flow is not
correct.
Check the solenoid coil for ohms continuity. An open circuit (no continuity) shows the solenoid is defective and must
be replaced.
The reversing valve is the heart of a heat pump. It changes
the direction of the refrigerant flow through the coils, and
changes the system from cooling to heating.
The reversing valveís solenoid can be energized in either the
heat or cool mode of operation. Duo-Therm roof top heat
pumps have the solenoid energized in the cool mode.
One method of checking the reversing valve is to feel the
refrigerant line at the top of the inside coil. In the COOL
mode, this line will be cool to the touch. In the heat mode
the line will be warm or hot to the touch. If you do not feel a cold line in the cooling mode, the direction of flow is not
correct.
Check the solenoid coil for ohms continuity. An open circuit (no continuity) shows the solenoid is defective and must
be replaced.
