Your furnace uses a lot of energy so to supply the extra energy needed to power the blower gas furnaces have a capacitor.
Furnace blower motor capacitor symptoms.
That means the start capacitor is only needed at the beginning of each cycle while the run capacitor runs throughout the cycle.
Indoor blower motor run capacitor.
Similar to the outdoor fan motor capacitor it is a small single two terminals capacitor that will help start and run the indoor blower motor.
A bad or faulty capacitor can exhibit many signs and symptoms.
But with a bad capacitor your blower cannot function well and may put your family s comfort at risk.
Most are found on the compressor.
Have only a single capacitor.
A start or run capacitor can be combined into one capacitor called a dual capacitor with three leads but can be split between two separate capacitors.
Have two capacitors called a start and run capacitor.
Delivering torque to the fan motor if the capacitor is faulty there won t be enough power delivered and the blower wheel fan belt and other important components can cease to operate.
Before checking the capacitor make sure the fuse controlling the furnace is flipped to the on position.
To inspect the capacitor make sure it is discharged.
If not the capacitor or the blower motor is not functioning properly.
This is the most common design type.
Heat pumps and air conditioners use a dual run capacitor which connects to both the compressor and the fan while furnaces use a single run capacitor connected to the blower motor.
How to check a run capacitor.
Some models include an auxiliary start capacitor that helps jump start the motors.
Not have a capacitor at all.
The start capacitor gives a fan motor the torque it needs to start spinning then stops.
The blower then moves the warmed air into and through the ductwork in your house.
The capacitor helps the fan motor run.
Once it is discharged use a capacitor tester to check the.
If the furnace is receiving power turn up the thermostat and see whether the blower motor starts within the next few minutes.
While the run capacitor stays on giving the motor extra torque when needed.
Where is a furnace capacitor located.
Problem indicators what you can do.
Like a battery the capacitor stores the extra energy that is needed to jump start the furnace blower.
The blower motor in your furnace blows hot air through the ducts and into your home.
