C4 Picasso air con issue

Johnno55 · Unread post by **Johnno55** » 12 Jul 2021, 23:33

I have a 2013 C4 Picasso platinum with the climate control AC.
Just had speed regulator and heater/blower motor replaced but the AC ( chiller ) only works on max fan speed, even lowering just one speed to 7 the chiller cuts off.
Anybody know why this would happen ?
Even Citroen couldn't discover what the fault was.

GiveMeABreak · Unread post by **GiveMeABreak** » 13 Jul 2021, 11:46

Has the car been disconnected from the battery recently or stored without using for a while?

Johnno55 · Unread post by **Johnno55** » 13 Jul 2021, 15:55

No it hasn't. I had the recent fault of the fan being stuck on and couldn't be turned off or down which led to those recent new parts.
The air con works fine at max speed but not at all below that speed

GiveMeABreak · Unread post by **GiveMeABreak** » 13 Jul 2021, 16:52

Ok, the reason I asked is that the system memorises values on startup and any disconnection can reinitialise the settings so it can take a while whilst driving to get things working again. Another member has recently done this with the same issue and found it started working on its own after a while.

Try a BSI reset and then go for a drive:

BSI Reset / Battery Disconnect / Reconnect Procedure

Johnno55 · Unread post by **Johnno55** » 14 Jul 2021, 11:46

Thanks I'll try it

Johnno55 · Unread post by **Johnno55** » 17 Jul 2021, 16:20

Resetting the bsi didn't work.
I've noticed a little dot on the drivers control screen of the air con that flashes on start up, is it supposed to do that as I've never noticed it before

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C4 Picasso air con issue

C4 Picasso air con issue

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