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I have a 2005 Pontiac Grand Prix .. I took a long trip and used my air circulator at the end of my trip it wouldn't shut off so a friend had a mechanic look at it he detached the blower fan so my battery wouldn't die so now I have no heat, AC or defroster ..Can anyone tell me what my problems is ???

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-Try to plug it back on. If the problem is gone, you should be okay.
If not and the blower still keep running like before.
-What you need to do:
-Unplug the "Blower Relay" If the blower is OFF then replace the relay.
Sound like the blower's relay stuck at (ON POSITION)


Posted on Oct 18, 2013


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Sounds like a problem with the circuit board.

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SOURCE: blower fan wont shut off

Try cycling the switch at the furnace to reset the blower board. If this doesn't work remove the green wire from the blower board(computer board) to eliminate a shorted t-stat or shorted wire between the furance and t-stat. If blower remains on, then blower board is shorted. I've seen all these problems.

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SOURCE: Dometic AC that the fan shuts off but the compressor keeps running

call dometic dealer. I hear they have a bad circuit board that is replaced.

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SOURCE: Does this unit draw inside outside air in fan mode?

that's usually controled by a baffle inside or outside air

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SOURCE: blower fan is not coming on

I recommend you getting service its a safety thing. the humming is the transformer and is normal.. good luck Tom

Posted on Jun 23, 2009

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