Interior fan control knob is stuck and I can't move it

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My Name: midiman

Experienced Member
Posts: 70
Joined: Sun Sep 08, 2013 9:26 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 141000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

Post

Hi, I was driving down the road the other day and all of a sudden the my blowers stopped. Then after a couple of seconds they came back on again. This happened for a couple of days and I couldn't figure out why.

Then it packed up.

Now the fan speed selector switch is stuck at position 1 and you can't move it.

The force that I would need to apply to turn it would surely break it off.

I can't figure out what would cause this to happen?

Could someone help?

Thanks
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My Name: C3driver52

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Posts: 1943
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
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Welcome to the forum midiman

If you have a heater like this
citroen c3 heater control panel
citroen c3 heater control panel
Then you will find its partly electronic, but the big knobs also move mechanical parts inside the heater.
I think you have some jammed mechanical bits behind the control panel that are jamming the controls. The control panel probably isn't faulty, but it will have to come out to get to the levers and arms behind it that operate the different functions of the heater.

Use these keys to remove the radio/CD (click), and then the drawer/cubby/multichanger and be removed.

Then remove the 2 screws arrowed

Image

To allow you to remove the control panel to have a look behind it. From there you may have to remove more to get at what needs sorting out. :)


Let us know how you get on, pictures are always welcome
My Name: midiman

Experienced Member
Posts: 70
Joined: Sun Sep 08, 2013 9:26 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 141000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

Post

Hi C3driver52.

I have removed the radio and gained access to the control unit.

I removed the two holding screws that are marked in red, but I can't get the unit out.

It's held in there solidly and I can't see what's keeping it in place.

Here are some pictures of the unit.
hu.jpg
hu1.jpg
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My Name: C3driver52

Guru
Posts: 1943
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 116 times
Been thanked: 68 times

Post

It should just need a good push at the top (white arrows) to free it up. The top will flip back slightly and release the lower tabs as it moves.
give it a good push at the top to release it
give it a good push at the top to release it

While you have the heater control panel out, it may be worth renewing the heater panel illumination lamps, now you know how much bother it is to get to them. Some 286 Capless 12v 1.2W lamps should do the job.

You can also find them cheap enough on eBay (here)


heater control panel lamps on a Citroen C3
heater control panel lamps on a Citroen C3
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My Name: midiman

Experienced Member
Posts: 70
Joined: Sun Sep 08, 2013 9:26 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 141000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

Post

Hi,

That worked but now I have a new problem.

There are two cables attached to the back of it.

One is blue and the other is black.

The first goes to the direction selector switch and the other goes to the temp control one.

How do I remove them?

Thanks
User avatar
My Name: C3driver52

Guru
Posts: 1943
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 116 times
Been thanked: 68 times

Post

Those sorts of plugs normally have barbs that lock the plug to the socket. Squeezing plug in the right place releases the barb from the socket.

On the plug I have here the barbs are at each end of the plug.
plug - squeeze the ends to release the lock
plug - squeeze the ends to release the lock
Squeeze the ends in the direction of the arrows to release the locking barbs, then pull the plug out.


Yours is a slightly different control panel, but I am sure you get the idea.
My Name: midiman

Experienced Member
Posts: 70
Joined: Sun Sep 08, 2013 9:26 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 141000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

Post

Hi, I will give that a go in the morning.

But what about the two cables going to the unit. The ones that control the temp and the fan direction.

They are two metal cables that are attached to the back of the unit.
User avatar
My Name: C3driver52

Guru
Posts: 1943
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 116 times
Been thanked: 68 times

Post

But what about the two cables going to the unit. The ones that control the temp and the fan direction.

They are two metal cables that are attached to the back of the unit.
You should be able to unclip them from the plastic parts on the back of the heater control panel.

the rear view of the heater controls of a citroen C3 (without climate control)
the rear view of the heater controls of a citroen C3 (without climate control)
My Name: midiman

Experienced Member
Posts: 70
Joined: Sun Sep 08, 2013 9:26 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 141000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

Post

Hi, I will give it a go but it's hard to work with everything so tightly boxed in.

I still don't like the look of those selector cables. There isn't much room to move the unit around when they are in place.
My Name: midiman

Experienced Member
Posts: 70
Joined: Sun Sep 08, 2013 9:26 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 141000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

Post

Hi,

I managed to release the electrical connector to the unit and get a better view of what's behind.

I have also taken some pictures so that you can see.

What I need to do is release the blue and black cables.

But I'm not to sure about how to do that.
rhcu1.jpg
rhcu.jpg
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