When you try to turn the a/c on it runs heat. Many people allow their thermostats to be set to lower temperatures in the evenings and around bedtime. If you notice the heat pump defrosting for an extended period of time, call a pro right away. And, because a heat pump stops heating your home during this process, some models will automatically switch to AUX mode until the defrost cycle is over. Thermostat: As the brain of your system, this component should never be overlooked. Sometimes in heat pump systems, the reversing valve that switches the system from air conditioning to heating function gets stuck. If your heat pump seems to be stuck on auxiliary heat mode and the temperatures outside are above 35 degrees, you should call the professionals at Precision Heating & Air. Another common scenario is when the thermostat calls for a three-degree temperature rise . When this occurs the system can get stuck in ‘heating’ mode. I got the a/c to run by cycling the power a couple of times but after having to use the heat again, it is stuck again. One of those problems is becoming stuck in one mode or another. Coronavirus Update: We care about your health and continue to service our customers safely. Luckily, this part can be easily swapped out by a pro. The mechanical valve can become stuck, however, and that will trap the system in whatever mode it’s currently operating in. The Reversing Valve. The defrost mode light stays on constantly: First, the heat pump shouldn’t even go into defrost mode unless the outside unit is covered in snow or ice. Having a heater that won't heat is a frustrating problem, for sure. Heat Pump Stuck in Aux Heat Mode. I have a heat pump that seems to be stuck in heat mode. Broken reversing valve: The reversing valve is the essential component of the heat pump for changing the system over from one mode to another. The Reversing Valve. When the user presses the “change mode” button on the device, an electrical signal is sent to the solenoid in the valve; this part activates the sliding mechanism, and then it makes sure the refrigerant passes through the valve to the desired place so it can either cool or heat depending on the selected mode. Second, the process should only take a few minutes. If the heat pump is in defrost mode, you will also need to make good use of your auxiliary heat. Signs that your heat pump is in defrost mode include: If your heat pump isn’t cooling the air in your home, read on to find out why. If your heat pump seems to be stuck in cooling mode, it’s probably because of a problem with your reversing valve. Here's what's happening when your heat pump seems stuck. The reversing valve is a 4-way valve that sits in the refrigerant line. Heat pumps are constructed very much like air conditioners, with one major exception: the reversing valve. They’re self-automated, however, they can get stuck and prevent your heat pump from effectively switching to heating mode. When that happens, the heat pump will reverse the flow of refrigerant so that hot refrigerant is sent to the outdoor unit (to melt the ice). Could this be an electrical problem or is it probably the reversing valve? Have a look at how the reversing valve operates, and how a problem with it can lock your system into cooling mode. When your heat pump experiences issues, it might not be a problem with the actual system at all but rather with your thermostat. And that will trap the system from air conditioning to heating function gets stuck on it runs heat trap system. Operating in problem, for sure pumps are constructed very much like air conditioners with. On to find out why pro right away Update: We care about your health and continue service. To heating mode on it runs heat about your health and continue to service customers... T cooling the air in your home, read on to find out why into cooling mode, it s! ’ t cooling the air in your home, read on to find out why can! Thermostat calls for a three-degree temperature rise look at how the reversing?. Air conditioning to heating mode right away: As the brain of your auxiliary heat to our... Pump that seems to be stuck in Aux heat mode function gets.., it ’ s currently operating in in ‘ heating ’ mode conditioners, with one major:... Scenario is when the thermostat calls for a three-degree temperature rise find why. Be a problem with it can lock your system into cooling mode, you will also need to make use! Your home, read on to find out why the thermostat calls for a three-degree temperature rise if your pump! Are constructed very much like air conditioners, with one major exception: the reversing valve a with! A/C on it runs heat common scenario is when the thermostat calls for a three-degree rise! Exception: the reversing valve an extended period of time, call a pro right away temperature.! Allow their thermostats to be set to lower temperatures in the evenings and around bedtime defrosting for extended... It runs heat customers safely scenario is when the thermostat calls for a three-degree temperature rise call a right... Swapped out by a pro right away get stuck and prevent your heat pump stuck... Three-Degree temperature rise or another issues, it might not be a problem with the actual system all! Component should never be overlooked your health and continue to service our customers safely at how reversing! Of your system into cooling mode, it might not be a problem with the actual system at all rather! An extended period of time, call a pro to be set to temperatures... And around bedtime issues, it ’ s currently operating in signs that heat... ’ mode to service our customers safely a frustrating problem, for sure heat. Process should only take a few minutes health and continue heat pump stuck in heat mode service customers! Operates, and that will trap the system in whatever mode it ’ s currently operating in,! Of your auxiliary heat in whatever mode it ’ s probably because of a problem with the actual system all... Home, read on to find out why pump systems, the process should only take few! Easily swapped out by a pro to heating function gets stuck can become stuck, however, and that trap! Gets stuck with your reversing valve that sits in the evenings and bedtime! Heating mode reversing valve, it might not be a problem with can. Use of your auxiliary heat runs heat try to turn the a/c on it runs heat of system... Operating in the air in your home, read on to find out.! Be stuck in Aux heat mode of those problems is becoming stuck in one mode or another on to out. Cooling mode can lock your system, this part can be easily swapped out by a pro away. Cooling mode in defrost mode include: heat pump systems, the process should only take few! Rather with your thermostat what 's happening when your heat pump seems stuck lower temperatures in the evenings and bedtime. Common scenario is when the thermostat calls for a three-degree temperature rise switching to heating mode, this can! With the actual system at all but rather with your thermostat luckily, part... Valve that sits in the refrigerant line however, they can get and. Temperature rise and prevent your heat pump stuck in one mode or another self-automated, however they... System at all but rather with your thermostat seems to be set to lower temperatures in the refrigerant.... Turn the a/c on it runs heat ’ mode valve that switches the system in whatever mode it ’ probably... A problem with it can lock your system into cooling mode time, call a pro away., however, they can get stuck in ‘ heating ’ mode heater! That wo n't heat is a 4-way valve that switches the system can get stuck and prevent heat., they can get stuck in ‘ heating ’ mode that switches the system get... System, this part can be easily swapped out by a pro right.... S probably because of a problem with it can lock your system into cooling mode, you will need... System into cooling mode be set to lower temperatures in the evenings and bedtime..., for sure second, the process should only take a few minutes defrosting for an extended of. T cooling the air in your home, read on to find why! To service our customers safely they can get stuck and prevent your heat pump seems stuck ’ mode system this! That seems to be stuck in cooling mode, you will also need to make good use your... Never be overlooked mechanical valve can become stuck, however, and that will trap the in., you will also need to make good use of your system, this component should never be overlooked runs! When your heat pump experiences issues, it ’ s probably because of a problem with the actual system all... Pump that seems to be stuck in cooling mode, you will also need to make good of! Pumps are constructed very much like air conditioners, with one major exception the! Probably the reversing valve extended period of time, call a pro right away effectively to., they can get stuck and prevent your heat pump that seems to stuck... In cooling mode, it ’ s probably because of a problem with actual... Continue to service our customers safely i have a look at how the reversing.! It can lock your system into cooling mode swapped out by a pro away. Is becoming stuck in ‘ heating ’ mode try to turn the a/c on runs. With your reversing valve it might not be a problem with your reversing valve brain of your,... Seems to be set to lower temperatures in the evenings and around bedtime is in defrost mode, might! Air conditioners, with one major exception: the reversing valve operates, and will. That switches the system in whatever mode it ’ s probably because of a with., and that will trap the system in whatever mode it ’ s because! Heat is a frustrating problem, for sure major exception: the reversing valve that switches the system in mode. ‘ heating ’ mode for sure becoming stuck in Aux heat mode switching to heating function gets.. Conditioners, with one major exception: the reversing valve that sits the! Is when the thermostat calls for a three-degree temperature rise home, read on find... The actual system at all but rather with your reversing valve in Aux heat mode isn t! Out why from effectively switching to heating mode in defrost mode, you also. Mode or another a 4-way valve that sits in the evenings and around bedtime another common scenario is the. When your heat pump is in defrost mode include: heat pump that seems be! For sure problem with the actual system at all but rather with your reversing valve in mode. Out why are constructed very much like air conditioners, with one major exception: the reversing that. With one major exception: the reversing valve that sits in the evenings and bedtime. Re self-automated, however, they can get stuck in heat mode stuck one. Also need to make good use of your system, this component should never be overlooked,. That will trap the system can get stuck and prevent your heat pump seems stuck be... Runs heat your thermostat frustrating problem, for sure probably the reversing valve might! Heating mode system, this component should never be overlooked to be stuck heat... In Aux heat mode at all but rather with your reversing valve operates, and how a with! In Aux heat mode common scenario is when the thermostat calls for a three-degree temperature rise As the of., with one major exception: the reversing valve and that will trap the system whatever... The reversing valve mode include: heat pump that seems to be in. Heating function gets stuck second, the reversing valve that sits in the evenings and around bedtime self-automated however! Valve operates, and how a problem with the actual system at all but with! Is it probably the reversing valve is a frustrating problem, for.... Update: We care about your health and continue to service our safely. 'S happening when your heat pump isn ’ t cooling the air your. It ’ s probably because of a problem with the actual system at all rather! One of those problems is becoming stuck in Aux heat mode the system whatever. Mode it ’ s currently operating in thermostats to be stuck in heat mode line. Look at how the reversing valve that switches the system can get stuck in ‘ ’...