Can I control a fan speed at the switch?

Wall Switches While technically speaking you can wire a fan to work this way, light switches work in different ways than fan speed controls. Using a dimmer switch to control fan speed can damage both the fan and the dimmer. Always purchase a wall switch designed specifically for use with fans.

How is blower motor speed controlled?

The blower motor resistor is responsible for controlling the blower motor speed. In the past, this was done by varying the voltage supplied to the blower motor. In newer applications, the blower motor resistor is actually a solid state module that sends a varied signal to the blower motor.

How do I adjust the fan speed on my ECM motor?

For an ECM blower motor with wires exiting the module (shown above), the speed is changed at the control board by moving the colored wire terminals. Only 3 of the 5 colored wires may be used at a time. These three are connected to the “Cool”, “Heat”, and “Fan” terminals on the control board.

Can a dimmer switch control fan speed?

Standard dimmer switches should never be used to control the fan motor on a ceiling fan because the dimmer could damage the fan motor, or overheat and start a fire.

How does a fan speed resistor work?

Blower resistors are resistors which are used to control the fan speed of automotive blowers. The fan speed can be changed either by switching the blower resistor resistance mechanically using a rotating lever, or electronically by the air conditioning system.

What does a blower control switch do?

The blower control switch controls the speed of the fan in the heating and air conditioning system of a vehicle. It works with the blower motor to deliver the right temperature and airflow needed to cool down or heat up a car’s cabin.

How do you change a 3 speed fan switch?

How to Replace a 3-Speed Ceiling Fan Chain Pull Switch

  1. Turn Off the Power. Shut down power to the fan.
  2. Set Up a Ladder. Climb a ladder or step-up to reach the fan housing.
  3. Remove the Cover Plate.
  4. Loosen the Fan Housing’s Nut.
  5. Take Pictures of the Wires.
  6. Disconnect the Wires.
  7. Match the Part.
  8. Install the New Switch.