With Tucson’s summer temperatures peaking at nearly 100 degrees, it’s important to keep your heat pump in tip-top shape. You’ll need its heat transfer capability to remove warm air from your home as it maintains a comfortable indoor temperature. There are some common problems that you may be able to diagnose and fix on your own.
Review these troubleshooting tips to help determine the source of your heat pump problem:
- Pump doesn’t come on. Thermostat malfunctions, tripped circuit breakers and blown fuses are the most common causes of pump failures. If the circuit breaker is tripped and continues to trip after you re-set it, this may indicate a short in the electrical system, which likely requires a phone call to a licensed technician.
- Pump doesn’t maintain comfortable temperatures. Dirty filters and condenser coils are unable to facilitate proper air flow. This reduces their efficiency and ability to maintain set temperatures, which causes your heat pump to work harder. Check the condition of your outside unit when you’re doing yard work to make sure coils aren’t clogged with dirt and overgrown shrubs aren’t impeding air circulation.
- Pump freezes or trips the circuit breaker. If the condenser freezes, turn it off. Check return-air registers to make sure they’re not obstructed and check the filter to make sure it’s not clogged.
- Pump cycles too frequently. If your blower turns on and off too frequently, the filter may need cleaning or replacing. The thermostat can also be the culprit. It may need proper calibration or adjustment of the heat anticipator.
- Pump’s blower doesn’t work. If you hear the motor functioning, but the blower is not producing air, you may need to replace the belt. If your thermostat’s fan switch is set to “Off” or “Auto,” the limit switch might need to be adjusted.
- Pump is noisy. This is not a good sign if the noise is squealing or grinding. It can indicate that the motor’s bearings are bad, and you’ll need to call a repair technician.
Our goal is to help educate our customers about energy and home comfort issues (specific to HVAC systems). For more information about heat pumps and other HVAC topics, download our free Home Comfort Resource guide.