Turn off the power switches, which can be on the wall nearby or on the pump itself. Then turn off the electrical breakers. After everything is off, wait up to five minutes, and the heat pump should be reset. You must then flip everything back on in the opposite order it was turned off.
Press the Heat Pump's Reset Button or Power Switch
Some heat pumps have two of them. One may be located on the indoor unit, and the other will be located on the outdoor unit. Begin by turning the power off to the heat pump. You will need to reset both units by pressing the buttons or flipping the switches.
There is a setting or toggle on your thermostat that controls how the fan operates – the AUTO setting allows the fan to only run when your heat pump cycles, while the ON setting keeps the fan in operation all the time.
If the cables appear to be in good condition, try unplugging the fan for a few minutes and then plugging it back in again. This can sometimes reset the motor and resolve the issue. If unplugging and plugging the fan back in doesn't work, check the fuse box for a popped breaker.
A dead capacitor in a heat pump can prevent the fan motor from receiving the electricity required to start, resulting in the heat pump fan not spinning. You can use a multimeter to test the capacitor's capacitance and check for signs of damage. If you're not comfortable with this step, contact a professional.
In AC systems, the air conditioner reset button is on the outside unit's lower edge, typically close to the ground. Some models have the reset button located behind the service panel, which may require tools to remove. Reset buttons are usually red or yellow with a clear “reset” label.
Check the circuit breaker, thermostat settings, and air filter first as these are common causes of furnace fan failure. Inspect electrical connections, listen for unusual noises, and verify proper airflow through vents during operation.
Most blower motors are controlled by a red or black switch on the side of the unit. Hold the button down for a few seconds (the manual will tell you precisely how long), then release. Replace the Panel and Restore Power.
Lastly, while we do not recommend using “Auto” mode for the heating and cooling function, we do recommend using “Auto Fan” mode to control air circulation as it tends to be the most efficient setting for that function.
If your heat pump is on but not blowing hot air, it could be due to a dirty air filter, low refrigerant levels, or a malfunctioning thermostat. The outdoor unit may also be iced over, or the reversing valve may not be working properly. Contact a professional for further inspection.
Keeping the fan on creates a more even distribution of heating and cooling, circulating the air if you have cold or hot spots in your house, like a bedroom above a garage. Less frequent starts and stops of the fan can reduce the stress from startup, and potentially help extend it's lifespan.
Power Outages: After a power outage, your heat pump may not resume normal operation on its own and might require a reset to function correctly. Inconsistent Airflow: If the airflow from your vents is weak, inconsistent, or not at the desired temperature, it's a sign that something might be amiss with your heat pump.
One of the most common reasons for the heat pump to blow warm air in cool mode is incorrect thermostat settings. This happens when you erroneously set the thermostat yourself. Another reason for this is when someone tampers with the thermostat after you have set it to cooling mode.
The short answer is when you have a heat pump not working, various issues can be responsible. These include a power switch or circuit breaker issue, using the wrong temperature or emergency heat thermostat settings, clogged filters, and faulty components within the indoor and outdoor units.
The solution could be as simple as clearing debris from the fan or resetting the thermostat. Other possible explanations for the problem include a damaged motor or power supply issues. You shouldn't try to use your heat pump if the fan isn't working.
The most common reasons for a radiator fan not working can be a blown-out fuse, a bad relay, or a broken wire. The faulty coolant temp sensor might also be a reason behind it. Whatever the case, a dysfunctional radiator fan can be fatal.
Common causes include electrical problems, a malfunctioning blower motor, or thermostat-related issues. Electrical problems may include blown fuses within the furnace circuit or tripped circuit breakers in your electrical panel. If the blower motor is worn out or has failed, it can cease to function altogether.
If the compressor is working, but the fan won't turn, then the problem is most likely with the motor and/or capacitor. When an AC fan is not spinning and no audible indications of compressor activity are detected, it is usually due to a lack of power or a malfunctioning compressor contactor.
Locate the Reset Button
The reset button on a Carrier furnace is typically a small, red button located on the furnace's blower motor. The blower motor is usually found inside the furnace cabinet. To access it: Remove the Access Panel: Unscrew or unlatch the front panel of your furnace to expose the internal components.
Not all air conditioning units have a reset button, but if yours does, it's typically located on the outdoor unit. Here's how to locate it: Turn Off the Power: Before you search for the reset button, ensure the power to the unit is turned off for safety reasons.
In general, the average life expectancy of a heat pump is 10 to 15 years, depending on a wide variety of factors. A ductless mini-split heat pump can last 10 to 30 years depending on the same variables.