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Why Won’t My Heat Pump Switch Modes?

Heat pumps are pretty ingenious devices, as they provide both heating and cooling. They are able to do this because they are made with a component called a reversing valve. The reversing valve allows the heat pump to switch between heating and cooling because the valve changes the direction of the refrigerant flow. Unfortunately, there are times when the valve can get stuck, either in a mode or in between. No matter what position the reversing valve is stuck in, the result is a heat pump that won’t work. One of the best ways to avoid this kind of repair is to schedule bi-annual heat pump maintenance, and to schedule it with a company you can trust: G&S Heating, Cooling & Electrical, Inc.

Reasons for a Heat Pump to Be Stuck

The reversing valve is a complex component, and there are a few reasons that can cause it to become stuck:

  • Bad solenoid – every heat pump has a solenoid. The solenoid is a small electrical component that helps move the heat pump from one mode to another. If the solenoid malfunctions, this can cause the heat pump to become stuck. Solenoids can be replaced, so if your heat pump is stuck because of a bad solenoid, the repair is fairly easy.
  • Refrigerant leak – refrigerant leaks can develop inside the reversing valve. While refrigerant leaks can be repaired with air conditioning systems, this is not the case with a reversing valve. Unfortunately, if your reversing valve develops a refrigerant leak, the valve will need to be replaced.
  • Problems with thermostat – when you have a heat pump, the thermostat in your home is the instrument that allows you to switch modes – just press the button. However, if your thermostat is malfunctioning, due to frayed, disconnected or corroded wiring, the heat pump may not be getting the message to switch modes.

Because your heat pump works year-round, it should be scheduled for maintenance twice a year. If you haven’t scheduled maintenance for your heat pump in Lynnwood, call G&S Heating, Cooling & Electrical, Inc. and schedule an appointment today!

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