Common questions

What happens when there is no heat and no blower?

What happens when there is no heat and no blower?

When engine is started, condenser fan continues to run even though no A/C buttons are pressed and blower switch at zero. All relevant fuses check out OK. There is no 12V power at the blower motor connector plug with engine running, A/C button pressed, and fan speed on any setting 1 – 4. I don’t know where any appropriate relay might be located.

When does an air blower fan not work?

Discussion in ‘ Discovery ‘ started by eieiooo, Jul 30, 2009 . Air Blower Fan not working with switch in any position 0 – 4. No heat, no A/C. When ignition key is turned, condenser fans start immediately. When engine is started, condenser fan continues to run even though no A/C buttons are pressed and blower switch at zero.

How does no heat, no a / C work?

Air Blower Fan not working with switch in any position 0 – 4. No heat, no A/C. When ignition key is turned, condenser fans start immediately. When engine is started, condenser fan continues to run even though no A/C buttons are pressed and blower switch at zero.

Why does my HVAC blower motor keep overheating?

Your blower motor may overheat because of a number of reasons. Dirt and grime can accumulate around the motor and prevent it from venting itself, causing heat to build up over time. You can solve this problem by hiring a professional to service your motor. Sometimes, age is the biggest threat to an HVAC system.

Why does my blower not come on neither heat or cooling mode?

Hello, I have heat pump unit with a backup auxiliary heat. My blower will not come on neither heat or cooling mode. Blower will no running on neither auto or fan. I’d jumped the motor and is working. My capacitor and transformer is also good too.

Why is my blower motor resistor not working?

CLICK HERE TO RESET YOUR PASSWORD! Help! Fan quit working on all 4 speeds. AC light & recirc light still light up and AC compressor clutch engages when turning fan on in AC mode, but not getting the fan to work. I replaced the blower motor resistor and the control unit with new parts from rockauto (ACDelco).

What should I do if my blower fan wont come on?

You will need to test with a voltmeter and see if your fan motor is getting the required 110 to 125 volts AC out of your control board to start the motor. I would suggest setting your thermostat to the “Fan ON” position. You should be getting 120 volts out of the control board.

How does an air conditioner blower motor work?

As explained in the HVAC Blower Motor Guide, an air conditioner blower motor and assembly is basically the fan inside the air conditioning system that forces the cooled air, via the AC cooling coil, through the vents and into the room space that is being conditioned.

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Ruth Doyle