Front Dash Heater/ AC blower doesnt turn on

[eborges]

Hi Everyone,
We are on our cross country road trip and ran into a problem with our front dash Heater /Ac Blower not turning on in our 2017 Georgetown 36B5. We have checked the fuses under the hood and they all test ok. Is there somewhere else we should check? Anyone else run into this before?

Thanks

[Iggy]

Check this fuse in the engine fuse panel behind the air filter.
40 amp #23

[kenandterry]

Geez Iggy.....

Not sure if this will come out the right way, but here goes....

I hope I never need your services or assistance. ��
But, if I need help with anything on my Georgetown, I hope you’re there. ��

[bubbles]

Just in case iggy's input is not the issue check fuse #7 in the fuse panel located on the left side of the steering column on the floor. Also in iggy's post relay #5 (second relay from left) is the blower motor relay controlled by that fuse #7 previously mentioned. I'm thinking all the same size relays in the row of relays are the same type and if need be the fan relay can be swapped out with one of the others for testing if need to. Just a thought and predicated upon the dash fan nomenclature being "blower".

Added: All electrical posts verified applicable to dash blower on a 2012 GT 378.

[rkulbok]

Pretty much the same thing happened to me. Turned out to be a vacuum line had come off.

[pmsherman]

Originally Posted by rkulbok

Pretty much the same thing happened to me. Turned out to be a vacuum line had come off.

Not a blower not functioning but working and air only being sent to the defroster problem. The air handler switch controlling where the blower sends the air is actually a vacuum switch controlling diverter panels in the air handler system. In my case, the vacuum feed line under the hood had come disconnected which locked the system in defrost mode.


Another discovery I made is that when parked for the night when it's cold outside, the air handler should be set to "Max AC" which closes the outside vent. This helps keep the coach warm when you're using the furnace or other interior heating mechanisms.


Phil

[eborges]

Thank you everyone for your input. This is what I have done so far:

1. Fuse #23 (40AMP) tested OK but I replaced just in case (under hood)
2. ) Fuse #7 (15AMP) Tested OK but replaced as well (Under dash by Steering Wheel)
3. Replaced Relay #5 (Under Hood)
4. Checked for any loose wires or vacum lines (none found)

Any other idea are appreciated!!!!

[Iggy]

Could you have pulled the wire plug off of the back of the fan speed switch?
Just reached your hand around and make sure the plug is seated on the switch from behind.


Other than that I have attached the wiring diagram.