Many vehicles have two fuses for the blower motor, one in the interior fuse block and the other under the hood. The blower motor is usually
under the dashboard on the passenger side
.
Which fuse is the blower motor fuse?
Fuse Protection
To protect the blower motor power circuit,
a 20-, 25- or 30-amp fuse
is usually located in the fuse panel under the dash. The rating of the fuse will depend on the vehicle application and how much power the blower motor requires at full speed.
Does a blower motor have a fuse?
The blower motor is
powered by a fuse-like device called a relay
. If your heater or air conditioner does not blow air through the vents, this could indicate that the blower motor fuse has probably blown. While replacement is easy, the exact location of your blower motor fuse may vary from vehicle to vehicle.
How do I know if my blower motor fuse is bad?
- Fan does not work at all, so no air comes out of the vents.
- Fan only works on some speeds and not others.
- Fan only works on the highest speed.
- Fan runs all the time and can't be controlled with the fan switch.
- You see smoke coming out of the vents.
Where is the blower motor fuse and relay?
The blower relay is
located near the front of the fuse block and is labeled “Blower
.” Inspect the center of the relay. If the metal rod inside is broken, the relay will need to be replaced.
What can cause a blower motor to stop working?
In a situation where the motor doesn't work on any speed, the most likely causes are:
a blown power supply fuse
, a bad motor ground connection, bad motor speed control module or a failed motor. On all systems, a failed blower motor is least likely.
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.
Why is no air coming from vents?
The most common cause of low air flow through the vents in your home is
blocked or dirty AC filters
. … Be sure to keep the area around your AC filters clear of furniture and anything else that might block the flow of air, and be sure to clean or change your AC filters once a month.
Examine the exposed components in the furnace cabinet to locate the blower motor; look for a small silver box positioned toward the top of the cabinet. Mounted just above this box you should
see a small round component with a raised red or white button at the center
; this is the blower reset switch.
What does a bad blower motor sound like?
You might hear this as a noise coming from directly behind the vent, perhaps
a light slapping
, or a sudden pop before you notice a problem with airflow. Whirring noises might also result from a bad bearing in the motor. … This is a telltale sign of a bad blower motor.
How much is a blower motor relay?
Blower Motor Relay Replacement Cost – RepairPal Estimate. Labor costs are
estimated between $37 and $46 while parts are priced at $37
. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.
What does a blower motor 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.
Where is blower motor relay located?
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.
All furnaces are equipped with a
reset button
. They are generally red or yellow and are located inside the blower compartment. The reset button is a safety feature that will shut down the furnace when a problem is detected, often a hot or overheating furnace, before it trips the circuit breaker.
