Consumers often come to us at AquaCal for help with their swimming pool heat pumps because we have manufactured, distributed, and serviced heat pumps for over 30 years. Sometimes consumers come to us with a simple problem: my heat pump wont run. In order to address this problem and to help others, we discuss a few tests you can perform on your heat pump before you call your heat pump professional.
- Check your power source. Heat pump owners often forget to perform this simple check and jump right to more tedious ones. Make sure your breaker has not tripped and that the disconnect switch of your heat pump (located adjacent to your unit, typically on a wall or a post) is turned on.
- Ensure that your heat pump is getting sufficient water flow. Just as a dirty filter and basket can cause your heat pump to run less efficiently (see our article “Why Isn’t My Swimming Pool Heat Pump Heating?“), they can also cause your heat pump to stop altogether. Make sure the valves to your heat pump are completely open and your filter and pump basket are clean. Some heat pump installations require a plumbing by-pass in the piping system so as to comply with the heat pumps maximum flow recommendations. This by-pass allows some of the total flow of water to be diverted from flowing through the heat pump and return directly to the pool. This by-pass valve, if present, should not be adjusted after the installer has properly set it.
- Check your desired water temperature and your actual water temperature. Many heat pumps cannot cool a swimming pool, they can only heat it. Therefore, your heat pump may not operate if your swimming pool temperature is higher than the temperature set on your heat pumps display. Set your desired water temperature above your actual water temperature and check back later to see if your heat pump is operating.
- Check the air temperature. An air-source heat pump can form ice on its evaporator coil if it operates in low air temperatures. This ice can block air inflow and damage the air-source heat pumps internal components. Some air-source heat pumps are therefore designed to automatically shut off or activate a defrosting system when air temperatures fall below 50°F (10°C).
If these tests yield no results, or if you still feel uncomfortable with your heat pumps performance, you should call your licensed heat pump professional. Feel free to leave a comment below if you have any questions or concerns regarding issues with your heat pump. We at AquaCal would love to help!