Does the blower motor control the AC?
The blower motor is the electrical switch on the interior of a vehicle that allows the driver to control the vehicle’s heating and air conditioning system. It is usually built into the the same control panel that houses all of the AC system controls, and is labeled with numbers and symbols to indicate blower fan speed.
What is a blower motor switch?
What is an HVAC Blower Motor Switch? The heating ventilation and air conditioning (HVAC) system uses many components to heat and cool the air inside of the vehicle, and it uses the blower motor to push that air through the vents.
Where is the AC blower motor relay located?
Where is the AC blower motor relay located? 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.
Can a blower switch be replaced as a unit?
Most fully automatic systems integrate the blower switch with a control panel that is replaced as a unit. These panels are usually quite expensive so careful diagnosis and specific computer software are required to be sure you don’t throw away a lot of money replacing one unnecessarily.
What are the signs of a broken blower motor switch?
Some common signs of a broken blower motor switch are if the switch only works on certain air settings, which occurs when a contact wears out, or if the switch is stuck or often gets stuck, indicating that the switch is not working properly.
What happens when you change the fuse on a heater blower?
If the blower works when you change the fuse, you may not be out of the woods yet. When the motor gets old and tired it will draw more current through the wires than a new motor. It may still draw enough current to blow the fuse after it runs for a while. In that case, a motor replacement is in order. Step 1: Disconnect the battery.
How do you replace a fan switch on a heater?
Replacing the fan switch begins by removing the knob. Most of the time the knob just pulls off, but sometimes it’s a little more tricky. Carefully inspect the knob all around using your inspection mirror to look underneath.