The heat you are feeling when the system runs is probably the backup heat located in your indoor unit. Furnaces & Heat Pumps The Furnace Fuse is Blown: What to Do Next? Hi Gary! Replace a Blown Fuse; Unlike a circuit breaker, fuses must be replaced when they blow. Any ideas why or what could be causing this? Repair your Heat Pump Fuse, Thermal Fuse & Breaker for less. While they are great alternatives to furnaces, boilers, and other heating systems, helping you save money and energy, they can also present some present some difficulties, such as electrical problems. If it does, PCB will be faulty, If not, start re-introducing each component one at a time in order of operation e.g. I have a 4 Ton Performance Series 2 Stage Heat Pump (25HPA648A003) and a FV4CNF005T00 - 4 Ton Bryant Air Handler. Next, go to your fuse box and make sure the breaker wasn’t tripped and you haven’t blown a fuse. Phil. This is usually a good place to start looking for problems with your furnace as loose wires can usually be detected with a voltage meter. Spall & Son is ready to help. I have a Trane heat pump (XR12) and air handler (TWE024P130B0) that is not working and would like to check the fuses before paying someone to service it. Reply. I have a two year old Goodman Model GPC1242H41CA package unit that has heat strips, I had a short that eneded up causing me to replace the transformer and the control board. If you’re troubleshooting the cooling mode, follow the same steps but set the temperature below room temperature instead. There may also be a second electrical switch outside of the home, near your outdoor heat pump unit. Have an HVAC mechanic fix the heat pump issue outside and you may not need any further mechanics. Frequently tripped breakers and blown fuses are signs of a more serious electrical problem. © 2020 Copyright T.E. Hi my daughters Grundfos TF110 circulator has blown its fuse. What can cause a heat pump transformer 5a fuse to blow? Contact a professional HVAC technician if your fan motor is making strange noises or not working at all. Sometimes in heat pump systems, the reversing valve that switches the system from air conditioning to heating function gets stuck. When the fuse is replaced, the system works great. I ended up replacing the thermostat and wires as well and now the AC side works perfect but when it is changed to heat it blows the 3 amp low volt fuse and heat will not work. We’ve been serving the Northeastern Pennsylvania area for over two decades, and we offer comprehensive furnace repair and replacement services in Carbondale, Scranton, and Wilkes-Barre, PA. Our NATE-certified technicians understand the importance of safety for your furnace, and we will quickly diagnose and repair the solution—or suggest the right furnace for replacement. The team at T.E. Since Tuesday the heat pump has been operating fine on Aux Heat. Turn the fuse back on and check if the heat pump starts working properly. Therefore, if your heat pump’s fuse becomes faulty, you should replace it instantly, before you and your family members start getting affected by the extreme weather conditions. If your heat pump is constantly running, there are likely three main causes: Unusually cold weather: Heat pumps are designed to work much more gradually than a furnace. Heat Pump Efficiency Outside Temperature Graph . Heat pump not heating. either of the two circuit breakers that handle the power sent to the air handler and heat pump … Contact T.E. However, you can prevent such headaches with regular maintenance of your HVAC system. For breaker boxes, look for the breaker that is in a different direction from the rest of the breakers. blown at a point where it joins one of the terminals a reason why I missed it in the first place. 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