It won’t be long before the weather starts getting chilly, so you might want to check and make sure your heat pump is working as it should before you switch it to heating mode. If yours is stuck in cooling mode, you should call a heating and air conditioning repair specialist. To give you an idea of why this happens, below are the most common reasons why heat pumps fail to switch modes.
Possible Reasons Why Your Heat Pump Won’t Switch Modes
Here’s how your heat pump works: In cooling mode, refrigerant circulates through the internal and external components of the system. It absorbs the heat inside your home and releases it outdoors as it brings cooled air into your house. The process is reversed when the heat pump is in heating mode. The reversing valve makes this possible, as it enables the refrigerant to flow in the opposite direction.
That said, if your heat pump isn’t able to switch to heating mode, heating and AC repair experts recommend looking at these possible culprits:
- Check valves – They prevent backflow when the fluid in the line changes direction. They work automatically, but sometimes they can get stuck, preventing the heat pump from switching to heating mode.
- Thermostat – In some cases, the problem isn’t with the actual system, but rather with the thermostat. So don’t forget to check to be sure your thermostat is working properly.
- Sliding cylinder – This component changes the flow of refrigerant once you switch modes through your thermostat. Since it’s essential to both the cooling and heating processes, make certain to check if this part is faulty.
Watch Out for a Refrigerant Leak
It’s a common misconception that refrigerant dissipates over time. but the fact is that your heat pump is supplied with enough refrigerant upon installation to last the entire life of the system. If you suspect that your heat pump is losing refrigerant, this probably means that there’s a leak in the system. Make sure to call an HVAC technician to address the issue immediately, as refrigerant leaks can be damaging and can result in the premature breakdown of your heat pump.
For your heating or air conditioning repair needs, Cooper Bros is one of the most reliable contractors you can hire. Our team is composed of trained, experienced technicians, so you can rest assured that your HVAC system will be handled by qualified professionals. Call us at (408) 649-2008 or fill out our contact form to request a free quote. We serve customers in San Jose and the surrounding areas.