What does the control switch on the blower do?

What this means in plain English is that as you turn the blower fan speed knob from OFF to any of the fan speeds (LO, M1, M2, and HI), the blower switch mechanically opens and closes the two contacts necessary to divert the incoming battery power (from circuit G) to the different circuits that’ll get the blower fan speed you’re choosing.

How to test the blower control switch ( GM )?

Basics Of Troubleshooting The Blower Control Switch. TEST 1: Checking Continuity Of The Blower Switch Fan Speeds. TEST 2: Using A Jumper Wire To Bypass The Blower Resistor. Where To Buy The Blower Switch And Save. Related Test Articles. This tutorial compliments this one on testing the blower motor resistor:

When to replace the heater fan control switch?

If you have replaced the blower motor and blower motor resistor on your ’95-’98 GM truck or SUV, and your fan only works on high or doesn’t turn on at all, your heater fan control switch needs to be replaced. This video explains on how to do replace this part. Thanks for watching. Loading…

When do you need a new blower motor switch?

Touch device users, explore by touch or with swipe gestures. You use your A/C and heater a lot during the year, straining your blower motor switch. Signs you need a new blower motor switch include the fan only working on certain settings, the switch getting stuck, or the fan failing to turn on when you flip the switch.

Why do I need a new blower motor for my Chevy Silverado?

If there is any mechanical resistance within the motor rotation, it’s capable of causing extreme overheating, which absolutely ruins the blower motor resistor. This typically occurs when there’s an obstruction blocking the fan blade, but no matter what the cause is, it means you need a new heater blower motor for Chevy Silverado.

What causes a blower fan to stop working?

Since these are mechanical connections the blower switch is making to open and close these circuits… over time and use these contacts become pitted and covered in carbon (from the electrical arching that occurs when the contacts close). When this happens, one or several of the blower fan speeds stop working.

What to do if your rear blower stops working?

Chevy tahoe suburban rear blower stops working. How to fix. – YouTube Chevy tahoe suburban rear blower stops working. How to fix.

What to do if your Chevy Tahoe blower stops working?

Chevy tahoe suburban rear blower stops working. How to fix. If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information.

What’s the speed of the blower motor switch?

This battery power is now diverted to terminal 3 of the blower switch harness connector (LT GRN/WHT wire). In tech speak: circuit 2 and 3 is now considered ‘closed’. The end result is that your Ford’s blower motor now runs in M1 speed.

How do you wire a fan speed switch?

Wire up the fan speed switch control switch by following the normal wiring standards. Make sure that all of the wires are first pulled through the electrical box to ensure that the face place will fit securely against the wall. The live black wires should be connected to the brass screws.

How can I Turn on the blower fan on my furnace?

We have a modern furnace with an old thermostat that controls heat and has a wire pair traveling to the furnace’s control board. I’d like to wire up a local light switch by the furnace to manually turn on the blower fan to do some extra filtration of the air in the interior of the home.

Can you change the speed of an air blower?

Yes you can but we think its just better to know that it can be done whats involved with a simple speed change of your air blower for your furnace air conditioner or heat pump. Ryan from Environmental Heating & air of nc gives you the color codes and speed of those wires.

What does the manual say about a blower relay?

The manual may refer to a blower relay, an AC relay, or a cooling fan relay. If it says blower relay, you’re golden; if it says AC relay, you might have what you want. If it says cooling fan relay, it’s talking about the relay that controls the radiator fans. Some cars have something called a power relay or an “unloader” relay.

What does the control switch on the blower do?