What should I do if my furnace blower fan is not working?

Locate and turn off the main circuit breaker or safety switch for the furnace, to ensure there is no power going to it. Once you have done that, open the furnace door and find the furnace blower motor to check if the belt is damaged or misaligned, then take appropriate steps to replace it.

How to check if the blower motor belt is the issue?

To check if the blower motor belt is the issue, first ensure that the furnace door is fully closed properly, as the furnace will not work if the door is open due to a switch on the inside of the furnace door. Locate and turn off the main circuit breaker or safety switch for the furnace, to ensure there is no power going to it.

What causes a fuse to blow on a blower motor?

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.

What causes a bad or failing blower motor relay?

Blown fuses. One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay circuit fuse. 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…

What can cause heater not work?

The most obvious reason an electric heater doesn’t work is that it’s not receiving any power . Start by checking the circuit breaker to see if it has been tripped. If it has, it’s an easy fix – simply turn it off and turn it back on again. You may also have to replace the fuse if it has blown.

Why is my AC heater not working?

The potential issues here vary whether your heating has gone out or your car’s AC system is on the fritz. Common reasons for the heating system not to work include the following: Low coolant. Air in the coolant system. Malfunctioning heater core. Failed (or failing) thermostat.

Why is my furnace blower motor not working?

Another common problem with furnace blower motors not working is caused by the “three D’s”; dust, dirt and debris. These three alone can cause overheating of the motor, which in turn causes the windings and bearings to burn up quicker. Dirt, dust and debris can cause the blower motor to overheat and seize up.

Why would a car heater stop working?

Here are a few of the more common reasons that’s causing the car heater to not work properly: The amount of coolant in the system is too low. When your vehicle’s engine has cooled down, open the radiator cap and check the level of coolant.

How does a furnace blower fan assembly work?

An example furnace blower motor fan assembly shows the blower motor connected in center and held in place by the mounting bracket, surrounded by the blower fan wheel and air outflow duct assembly. You can see the color coded wiring and run capacitor coming from the motor. Note that different assemblies will vary.

How to replace an old furnace blower motor?

Furnace Blower Motor Replacement Guide 1 Removing The Old Blower Motor. Removing the old furnace blower motor is not overly complicated and can be done in relatively short time and with tools you will usually have 2 Finding The Correct Blower Motor Replacement Part. 3 * Search More Furnace Blower Motor Replacements Here*. …

Why is MY BMW blower fan not working?

A failing BATTERY can cause certain items in your BMW to stop working because the car’s computer (s) are trying to save as much battery power as possible for essential functions and safety features because it has sensed a weak battery condition or battery drain that may prevent the vehicle from starting successfully in the near future.

How to troubleshoot your furnace blower motor fan?

A third quick and simple troubleshooting step for your furnace blower motor is to make sure the filters and vents are clean and free of dust and debris. To do this, go to each of your home vents and ensure they are open and clear. Next check the cold air return filter for dirt or dust build up.

What causes a blower motor to overheat?

Decreased airflow causes the blower motor resistor to overheat and fail. Reduced airflow also causes the blower motor to work harder, draw more current and that can cause repeat blower motor resistor failures. Blower motor is drawing too much power. Check the cabin air filter for clogging.

What should I do if my blower motor stops?

Replace blower motor. If you have a variable speed blower motor, replace the blower motor speed control module. If you have a three or four speed blower motor, remove the blower motor relay. If the motor stops, replace the relay. Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period.