In terms of function, heat pumps are very similar to other heating systems. Because of their more complicated construction, however, there are a few common repairs that are unique to heat pumps. Let’s take a look at some of the common problems associated with heat pumps, and their solutions.
Heat Pump Won’t Switch Modes
One of the greatest things about heat pumps is their ability to switch between heating and cooling modes. A problem can occur, however, where a heat pump can become stuck in one mode or the other. This is caused by a broken reversing valve. Oftentimes, the solenoid that detects what mode to switch the reversing valve to can lose its magnetic charge. This makes the valve unable to operate, which causes the heat pump to become stuck.
Heat Pump Ices Over
It is not uncommon to find ice on your heat pump during especially cold days. As the outdoor coil absorbs thermal energy from the air, ice forms on the casing as a side effect. Normally, the heat pump uses a defrost cycle to melt the ice off the pump on a regular basis. If you notice that your heat pump is mostly or completely covered with ice, it means that the defrost cycle likely isn’t working. This will ultimately prevent the heat pump from gathering thermal energy from the air, which more or less means it will stop giving off heat.
Heat Pump Doesn’t Heat Enough
If your heat pump is on but not heating enough, there are a number of possible causes. The first is simply that the environment is too cold. Heat pump efficiency is directly linked to the amount of thermal energy in the air. The colder the environment, the more difficult it will be for the heat pump to reach the target heating temperature. The other possibility is that there is a leak in the refrigerant line. This will slowly drain the heat pump’s ability to deliver thermal energy and circulate heat throughout the house.
If your heat pump is acting up, call Johns Refrigeration. We conduct heating repairs throughout the Mesa, AZ area.