High And Low Fan Wiring Diagram

To wire a 3 way switch circuit that controls both the fan and the light use this diagram.

High and low fan wiring diagram. The wiring diagram is usually on the inside of the wiring box s cover. Most dpdt switches use three terminals because there will be a high speed low speed and common wire hooked into them. Gm vehicles equipped with an ls series pcm and electric fans operate both fans in low speed and high speed mode only. It usually shows how to wire the motor for common configurations such as 110 to 125 volts or 220 to 250 volts and occasionally 208 volts.

The common on the second 3 way switch is connected to the hot wires on the fan light. A three phase motor is more efficient than a single phase motor because of the peculiarities of alternating current ac. I have had a lot of people ask me about gm radiator cooling fan diagnosis in the past. Testing low and high speed cooling fan relays.

How to wire up a 2 speed ford taurus electric fan the relays i used is the zettler az979 1a 12de for low speed and az979 1c 12d for hi speed. Inst maint wiring qxd 5 03 2008 10 02 am page 7 m 8 installation maintenance wiring diagrams. By using the two pcm outputs and three relays two electric fans can be controlled in low speed and high speed modes. As with all 3 way circuits the common on one switch is connected to the hot source wire from the circuit.

When a motor s power supply is brought in from three wires instead of just one with the power delivery cycling through each of these in sequence hence the a part of ac it permits an effective power level that is 3 times higher about 1 728 times higher than a. The diode part number. This might seem intimidating but it does not have to be. This requires two pcm outputs and three relays.

Pick the diagram that is most like the scenario you are in and see if you can wire up your fan. How to wire two speed motors to properly set up this sort of high low switch wiring you ll need an ac power supply the two speed motor and a double pole double throw switch. These diagrams are current at the time of publication check the wiring diagram supplied with the motor. Ceiling fan wiring diagram.

By following the wiring diagram you can easily set the motor between voltages. It basically runs two fans in series for low speed and then put s each on it s own 12v circuit for high speed. 3 way fan switch wiring diagram.