Citroen Relay Aircon stops working on fan speed 3 and 4

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Tenpin
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Joined: 30 Dec 2021, 22:37

Citroen Relay Aircon stops working on fan speed 3 and 4

Post by Tenpin »

Hi all, new here so thanks for letting me join.
I have a problem with the aircon on my Citroen Relay 2010 L4H2. The aircon turns on and works ok on fan speeds 1 and two. As soon as I switch to speed 3 or 4 the aircon cuts out and the light on the aircon switch turns off.
Has anyone else had the same issue or know what my problem is likely to be?

Thanks in advance
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xantia_v6
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Re: Citroen Relay Aircon stops working on fan speed 3 and 4

Post by xantia_v6 »

I would guess that the blower speed control module has partially failed.
Tenpin
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Joined: 30 Dec 2021, 22:37

Re: Citroen Relay Aircon stops working on fan speed 3 and 4

Post by Tenpin »

Sorry to sound a little dumb but where would the blower control module be situated please. Or is that just a part of the switches etc?
Tenpin
Posts: 3
Joined: 30 Dec 2021, 22:37

Re: Citroen Relay Aircon stops working on fan speed 3 and 4

Post by Tenpin »

From the attached picture (part of wiring diagram) is there anywhere to find out the relevant parts according to the numbers shown? I assume the 8046 is the blower resistor, 8050is the motor, 8040 is the blower switch.
I am not sure what the other parts are
8000
1320
8009
3051
8020
Does anyone have a list of what these items are please
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Aircon.png
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xantia_v6
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Re: Citroen Relay Aircon stops working on fan speed 3 and 4

Post by xantia_v6 »

see: https://frenchcarforum.co.uk/wiki/Elect ... ring_Codes

Pull the relevent fuses (one at a time) and check for any signs of corrosion, burning or overheating of the contacts.