C5

[Guest mikey100]

Helo everybody can you help,my c5 2.2 has developed a fault with the aircon fan, have checked fuses but all ok,any ideas. thanks mike.

[Turbofan]

Hallo Mikey,

 

There is a common problem with C5 aircon fans with them either running at full chat or not working at all.

 

As you've been checking fuses, presumably it's not running at all...... If when you switch on the LCD depiction of a fan lights up but goes out when you try to use the fan controls then the solution to your problem is to replace the solid state controller, probably.

 

You can find the controller from the drivers footwell, just near where you would rest your clutch foot. On the left side of the footwell, then, is a piece of the footwell lining that is removeable and when it's out you will be able to see a couple of green wiring loom connectors plugged into an item that is held in place by two hex headed screws. Unplug the connectors and remove the screws. Withdraw the controller and you'll know that you have the right piece if it's got an ally heat sink that you've just withdrawn from one of the aircon airways.

 

As far as I can make out the part is not user serviceable (but I expect someone will prove me wrong) and it is quite expensive. Mine cost me £56 from a Citroen main dealer early this year.

 

Reverse the procedure with the replacement controller and that's that....probably.

 

Tip. The hex headed screws are very difficult to reach due to their location. I found a bit of bluetack in the socket worked wonders.

 

Best of luck

 

Helo everybody can you help,my c5 2.2 has developed a fault with the aircon fan, have checked fuses but all ok,any ideas. thanks mike.

[Guest mikey100]

Hallo Mikey,

 

There is a common problem with C5 aircon fans with them either running at full chat or not working at all.

 

As you've been checking fuses, presumably it's not running at all...... If when you switch on the LCD depiction of a fan lights up but goes out when you try to use the fan controls then the solution to your problem is to replace the solid state controller, probably.

 

You can find the controller from the drivers footwell, just near where you would rest your clutch foot. On the left side of the footwell, then, is a piece of the footwell lining that is removeable and when it's out you will be able to see a couple of green wiring loom connectors plugged into an item that is held in place by two hex headed screws. Unplug the connectors and remove the screws. Withdraw the controller and you'll know that you have the right piece if it's got an ally heat sink that you've just withdrawn from one of the aircon airways.

 

As far as I can make out the part is not user serviceable (but I expect someone will prove me wrong) and it is quite expensive. Mine cost me £56 from a Citroen main dealer early this year.

 

Reverse the procedure with the replacement controller and that's that....probably.

 

Tip. The hex headed screws are very difficult to reach due to their location. I found a bit of bluetack in the socket worked wonders.

 

Best of luck

[Guest mikey100]

Hallo Mikey,

 

There is a common problem with C5 aircon fans with them either running at full chat or not working at all.

 

As you've been checking fuses, presumably it's not running at all...... If when you switch on the LCD depiction of a fan lights up but goes out when you try to use the fan controls then the solution to your problem is to replace the solid state controller, probably.

 

You can find the controller from the drivers footwell, just near where you would rest your clutch foot. On the left side of the footwell, then, is a piece of the footwell lining that is removeable and when it's out you will be able to see a couple of green wiring loom connectors plugged into an item that is held in place by two hex headed screws. Unplug the connectors and remove the screws. Withdraw the controller and you'll know that you have the right piece if it's got an ally heat sink that you've just withdrawn from one of the aircon airways.

 

As far as I can make out the part is not user serviceable (but I expect someone will prove me wrong) and it is quite expensive. Mine cost me £56 from a Citroen main dealer early this year.

 

Reverse the procedure with the replacement controller and that's that....probably.

 

Tip. The hex headed screws are very difficult to reach due to their location. I found a bit of bluetack in the socket worked wonders.

 

Best of luck

[Guest mikey100]

Thanks turbofan will try your idea,all the best mikey.

[GreenBlood]

Thanks turbofan will try your idea,all the best mikey.

 

This has been covered many times, common fault with the C5

 

This thread shows removal of the Fan Control Module

http://www.aussiefrogs.com/forum/showthread.php?t=62758

 

This thread shows the Module can be be fixed with a replacement Mosfet for around $20AUS dollars, if you are handy with a soldering iron.

I'm pretty sure you would be able to buy the replacement Mosfet in the UK

http://www.aussiefrogs.com/forum/showpost.php?p=816452&postcount=1

 

Cheers

Chris