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Troubleshooting: Heat Pumps

HVAC technicians

HVAC technicians

Our HVAC technicians know that like any other piece of HVAC equipment, heat pumps can sometimes act up. That’s why we’ve compiled a checklist of what to do if you need to troubleshoot yours. Try these steps before you call us:

1. Turn off your heat pump using the thermostat.

2. Let it sit for about 30 minutes.

3. Move the fan switch to “on.” Does the fan come on? (Do you feel air blowing out of your registers?)

4. If not, check the fuses/breakers. If the breaker was tripped, you could have a bad wiring connection or control board. If so, turn the thermostat to at least 5 degrees above/below room temperature.

5. Is the air coming out warm/cold?

6. If not, then you may have a problem with the thermostat. If your unit has a condensate pump, check to see if the reservoir is full. If it is, that may be causing the problem. If the air is warm/cold, then you may have a problem with your outdoor unit.

7. To check your outdoor unit, switch the thermostat “off.” Notice if the unit has ice or frost buildup (if winter time). If so, your defrost control could be malfunctioning or your refrigerant could be low.

8. Choose to manually defrost the unit (either with a switch or by the control board). If the unit doesn’t begin defrosting, your timer motor or control board may be the problem.

9. Check the outdoor thermostat. (If it’s winter time and it’s colder than the set point, the unit won’t run.)

10. If the fan is running, check the refrigerant lines. The larger line should be warm to the touch. If it’s not, you may have a wiring problem, a compressor problem, or low refrigerant.

If you haven’t found the heat pump problem (or if you’ve found your problem, but still aren’t able to fix it), give our HVAC technicians a call. We’ll be happy to get it up and running for you.