If the fan does not start, you have a wiring issue (circuit breaker trips) or motor problem (circuit breaker does not trip). While your thermostat may be at fault, only an HVAC technician can diagnose and remedy the issue correctly. Time to call in the experts!Sometimes the furnace blower isn’t working because the thermostat is set too low. Over the summer or more recently, someone may have accidentally lowered the thermostat temperature. With all the new digital thermostats and digital controllers, this can and does happen. The third easy fix is a clean furnace filter.
What would cause a furnace blower not to kick on?
Make sure that the power cord hasn't melted or a fuse hasn't been blown. If your cables are looking fine, try unplugging the fan for a few minutes and then plugging it back in again. Sometimes, this process can reset the motor and solve your furnace problems.
How do you reset a furnace blower?
Locate the reset button on the furnace and press it to reset the furnace. It is usually located inside the blower compartment on the side of the blower motor. Be cautious as the housing may be hot. If the button is popped up, press it down.
Why did my heater blower stop working?
If the blower doesn't receive power, check that the blower fuse isn't blown. A blown fuse often indicates an underlying problem, so never replace one with a larger fuse to prevent it from blowing out again.
Can furnace run without blower?
The blower fan motor The furnace can produce heat inside the combustion chamber—but that heat won't go anywhere if the blower fan isn't running. Because there's a danger of the furnace overheating without the blower fan, the furnace won't operate unless the blower has power.
How much does it cost to fix a furnace blower?
Furnace Blower Motor Replacement Cost On average nationwide, a furnace blower motor replacement costs $400 to $600, including parts and labor. A single-speed blower motor costs around $450 to replace while a variable-speed motor costs $600 or more. You'll also need to budget labor, about $75 to $125 per hour.
Should I hit the reset button on my furnace?
The purpose of the reset button on a furnace is to shut it down before it can trip your circuit breaker. The need for this may arise if the furnace becomes too hot, or if there is some sort of electrical system interruption. To get the furnace working again, you simply press the reset button back down again.
How much does it cost to replace a blower motor?
How do you diagnose a bad blower motor?
You might also hear ongoing whirring noises, or noises that change or get louder if you increase the fan speed. These are all signs of problems with the blower motor. In some cases, you may even notice smoke or smells of burning while driving, in which case you should pull over immediately.
Where is the blower fuse located?
Under the instrument panel, look under the glove box. On the right side of the fender wall you will find another fuse box. The blower motor fuse is easy to replace.
Where is the furnace fan limit switch located?
Your fan limit switch is located inside the furnace panel cover, usually near the upper right corner. The fan limit switch is responsible for turning the blower on and off at the appropriate times.
What would cause a furnace blower not to kick on?
Make sure that the power cord hasn't melted or a fuse hasn't been blown. If your cables are looking fine, try unplugging the fan for a few minutes and then plugging it back in again. Sometimes, this process can reset the motor and solve your furnace problems.
How do I get my furnace to circulate air?
By setting the thermostat to manual and allowing the fan to run continuously, the air will circulate and mix in all rooms of your home before returning down to the furnace for re-circulation. Because of this constant circulation, the air coming out of all the registers will be approximately the same temperature.
How long should a furnace blower last?
Can a blower motor be repaired?
There are a number of things that can go wrong with your heating system, but if the air stops blowing altogether and the same is true on cold air settings, a blower motor replacement is likely in order. The good news is that it's a fairly straight forward repair.
What causes a furnace to need to be reset?
The basic purpose of a reset button is to serve as a safety feature. It helps shut down the furnace when the furnace is too hot. This essentially prevents the overheated furnace from triggering the circuit breaker. As noted above, a furnace may need to be reset sometimes, such as when it is too hot.
Why does my furnace only work after power reset?
You may have a faulty sensor, sticky motor, bad controller board, too many closed dampers, a blocked air return, incomplete combustion, cracked heat exchanger, blocked condensate line, etc etc. some of these things are life-critical situations.
How much does it cost to replace a blower motor resistor?
How much does a blower motor resistor cost? To replace the blower motor resistor, it would cost you anywhere between $50 to$150 – this includes the cost of equipment and labor. However, by doing it yourself at home, you can save up to $70.
How hard is it to replace a blower resistor?
How to Replace a Blower Motor Resistor. The blower motor resistor is usually extremely easy to access, but the hard part can be positioning your body inside the car to remove the part. The resistor is at the bottom of the HVAC housing or just behind the glove compartment.
Why is my blower fan not working?
If you see or hear the fan turn on, your blower motor is not the culprit. If the fan does not start, you have a wiring issue (circuit breaker trips) or motor problem (circuit breaker does not trip). While your thermostat may be at fault, only an HVAC technician can diagnose and remedy the issue correctly.
Where is a blower motor located?
The blower motor is usually under the dashboard on the passenger side. Blower motors that make loud squeaks or rattling noises may be worn out and on the verge of packing it in, but sometimes those noises are caused by leaves or other debris that can be cleaned out after the motor is removed from the vehicle.
What happens when a blower motor goes bad?
The blades of the fan are made of plastic and they can get damaged easily. If it happens, you will hear unusual noises like slapping or sudden pop coming from behind the vent. Problems with the airflow have signs such as ongoing whirring, getting louder when you increase the fan speed.
What happens when blower motor relay goes bad?
If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.
Which fuse is the blower motor fuse?
Where is the blower motor relay?
The blower motor relay is generally located in the under-hood fuse box or in the under-dash fuse box. A blown fuse can mimic relay failure.
Does a blower motor have a relay?
In a blower motor, the relay supplies the power that allows the fans to circulate warmed air. Essentially an on/off switch, the blower motor relay's reactions start and end the heating process in HVAC systems by controlling the flow of current between the power source and the motor.
What does it mean when your furnace blower motor stops working?
A furnace blower motor that stops pushing warm air out is not the same as a blower that is forcing only cold air into your home. If you have cool air but a steady airflow, your blower motor is working but your heat exchanger or burner is not.
Why is my furnace not working?
Here are 5 easy things you can do on your own to troubleshoot why your furnace isn’t working: Check to make sure the furnace filter is clean. If the air flow out of your registers seems low, check the air filter. A clogged filter can block air flow. Make sure all your air registers are open and not obstructed with dust or objects.
What to do when your furnace blower won’t run?
Look into your air filter’s housing and check the markings on your filter. If your furnace blower won’t turn on, check to confirm the arrows on the air filter are pointing in the correct direction. When the arrows are pointing in the wrong direction, change the orientation of the filter.
How do I know if my blower motor is working?
If you have cool air but a steady airflow, your blower motor is working but your heat exchanger or burner is not. Check the furnace flame for a complete blue color.
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How long does a blower last on a furnace?How often should I oil my furnace blower motor?
