Hiya. i have a fan issue i need help with please..

so my fans stopped working, windscreen, feet, person all of them. i can feel the heat coming from vents no fan can be heard or felt.

Next day the fan works, sounds like ****, then quickly stops working

First i tried doing the reset by holding AC and body fan till they blinked, did nothing.

I checked fuses- no issues apparent

I checked voltage going to the blower plug - 11.6V, no faults apparent even when wiggling the cables.

I removed the blower motor unit and connected it to 12V battery- fan spins proving it isnt the fan/blower?

I replaced the fan motor resistor (the thing bolted to it). now, Initially this worked but now the fan has stopped working again?

Pressing Max windscreen does not do anything except the lights on the display still work.. just no variation in speed

Im not electrically minded so please talk to me like a baby if its technical

cheers all

Try checking voltage at blower supply again and use a known good earth like bare chassis etc. It might be a bad earth to fan or a short somewhere. Check fuses are all good and secure/making good contact and no corosion. You read 11.6v but I think that may be low. If its a bad connection then that could drop when fan is operating due to resistance. I would assume it should be nearer 12-14v unless your car battery is low.

Alasdair

1 hour ago, Alasdair1 said:

Try checking voltage at blower supply again and use a known good earth like bare chassis etc. It might be a bad earth to fan or a short somewhere. Check fuses are all good and secure/making good contact and no corosion. You read 11.6v but I think that may be low. If its a bad connection then that could drop when fan is operating due to resistance. I would assume it should be nearer 12-14v unless your car battery is low.

Alasdair

thanks. i thought about a bad earth- ill try that. also gunna just change related fuses in hope that works, some did look a bit ****ty, just find it strange a fuse could be intermittent?

car battery was absolutely low, charged up now to 13V last night.

If theres any corosion on fuses it can cause problems. They can be intermittent as if its a bad connection can heat up which can either cure problem or make it worse. Hopefully a decent battery and fuse clean up/change will help. As said check voltage again at blower connection now battery is charged.

Alasdair