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If you have a 2 stage furnace (hi fire & lo fire) then the blower will run on lo speed in lo fire & hi speed in hi fire and in AC mode. If it`s a single stage furnace lo speed for heat and hi speed for cooling.

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15y ago

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Why does the heat blower only work on low and medium but not on high?

It could be due to a faulty resistor in the blower motor circuit. The resistor regulates the speed of the blower motor, and if it malfunctions, the high speed setting may not work properly. It would be best to have a mechanic inspect and replace the resistor if necessary.


Why does the blower fan only work on high speed?

The blower motor resistor module is ruined and need replacement. It can be found from below and behind the glove box. Tt may be hard to see, follow the wires to connection that is mounted to the blower unit by two small hex-head screws. I removed the glove box so I could access it easier than trying to go from the bottom in a confined position.


How does an ignitor on a furnace work?

An ignitor on a furnace works by generating a high voltage electrical current that creates a spark or a hot surface to ignite the gas or oil in the furnace. This ignition process is essential for starting the combustion process that produces heat for the furnace to operate and warm up the space. If the ignitor malfunctions, it can prevent the furnace from starting properly.


Do you have to do your work?

If you are being compensated, you are supposed to.


What size electric motor do you need to run an air compressor I have a furnace blower motor. Would that be suitable or do I need a heavier duty one?

It would all depend on the size of the compressor. If it's a small one(like for an airbrush gun) it might just work, but if it's a compressor to power impact wrenches or similar it'd probably not work.

Related Questions

Your heater blower will just work on high speed?

The blower motor speed resistor is burned out. The high speed function bypasses the resistor. The speed resistor is generally located near to the blower motor.


Have a 5 ton condenser with a 5 ton coil have a 3 ton drive furnace any way this will work or will you have to get a 5 ton drive furnace?

You may be able to turn up the blower speed but you will probably still not get the appropriate cfm. You may be able to swap out the blower but you may run into problems with fitting the new one in place or the proper sizing of the return and supply duct work.


Why does your blower fan only work on medium speed on your 1972 Chevrolet Blazer?

Blower motor speed resistor is partially burned out.


Why does the acheater blower only work on high speed?

either the blower control switch or the blower motoer needs replacing


How should I properly wire the furnace blower motor to ensure safe and efficient operation?

To properly wire the furnace blower motor for safe and efficient operation, follow these steps: Turn off the power to the furnace before starting any work. Identify the wires for the motor, typically labeled as high speed, medium speed, and low speed. Connect the corresponding wires from the motor to the appropriate terminals on the furnace control board. Make sure all connections are secure and properly insulated to prevent any electrical hazards. Test the motor to ensure it is running smoothly and efficiently before closing up the furnace. If you are unsure about the wiring process, it is recommended to consult a professional HVAC technician for assistance.


Why the Blower motor not work on high speed on a jimmy 97?

If the blower works on slower speeds only I would suspect the high speed blower motor relay (under the hood in the power distribution box) or the switch itself. The blower speed resistor is working if all the slower speeds work.


What would cause your blower motor to work on only one speed on a 97 Chevy k1500?

If the one speed it works on is high speed, it is the blower motor speed resisitor that is bad.


Your ac want blow how do you fix it?

If you are saying the blower motor will not work, then check the fuse. If the fuse is not blown, then it is possibly a defective Blower Motor Resistor Pack, blower motor, or blower motor speed control switch, in that order.If you are saying the blower motor will not work, then check the fuse. If the fuse is not blown, then it is possibly a defective Blower Motor Resistor Pack, blower motor, or blower motor speed control switch, in that order.


What would cause the blower motor on a 2002 Malibu to work only at high speed?

I would suspect the blower motor speed resister is shot.


What else would stop a blower motor from changing speed 1234speed dont work?

If you only have high speed I would blame the blower speed resister. If you have no speeds and the fuse is good, I would blame the blower motor or the switch.


Why does blower on 2003 Chevrolet Trailblazer work on 5 but not 1-4?

The blower motor speed resistor is burned out.


Why does the heater blower motor not work on the low speed on a 2002 F350 super duty?

bad blower resistor