PTAC Heat Pump
Re: Blows Cold Air - Heating
A PTAC Heat Pump typically uses the compressor for initial heating and electric strip heaters for backup heat.
Unlike a standard heat pump, the compressor and electric heaters never operate at the same time. It is one or the other.
► The PTAC heat pump does not have a defrost mode. A sensor on the outdoor coil measures the coil temperature. When the coil temperature gets to 20 deg. the control board stops the compressor and switches to electric heat mode.
Qty | Possible Causes: |
Bad Coil Sensor | |
Bad Compressor | |
Low Refrigerant Charge | |
Bad Control Board | |
Bad Heaters |
CHECKOUT:
1. Check Operation
2. Check Refrigerant