Air Conditioning just stopped working Citroen C3 1.4 HDI

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cikavuve
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Joined: 20 Oct 2020, 13:57

Air Conditioning just stopped working Citroen C3 1.4 HDI

Post by cikavuve »

Hi guys, I am here once again to ask for your help.

The problem explaining is simple for this one, when I turn on A/C it does not work, the compressor is not engaging it seems like the button only lights up.
What are the next steps I can do to troubleshoot the problem?

Thanks in advance

wheeler
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Re: Air Conditioning just stopped working Citroen C3 1.4 HDI

Post by wheeler »

A check of the gas pressure is probably first on the list. If the pressure is too low in the refrigerant circuit it will stop the compressor engaging.

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GiveMeABreak
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Re: Air Conditioning just stopped working Citroen C3 1.4 HDI

Post by GiveMeABreak »

Next a leak test that any proper A/C centre can do, and hopefully that will decide where you go next. If a leak - it could be a seal, a pipe, the Condenser Radiator (usually a stone chip) or the compressor itself.

Mine has just gone on the C3 so I will have the same to do.

ozvtr
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Re: Air Conditioning just stopped working Citroen C3 1.4 HDI

Post by ozvtr »

There are Schrader valves in the aluminium lines going from the evaporator through the fire wall to the front of the car. They are located near the front wheel arch.
WITHOUT the engine running, undo one of the caps and use a thin rod to push on the center of the valve. They are similar looking and in action to tyre valves.
WARNING!!! The system may be under pressure AND oil may be ejected! Wear eye protection!
If the system is Ok the pressure is typically about 100 PSI so be prepared!
Just press down on the valve enough to release a small amount of refrigerant. Enough to see if there is pressure in the system. If nothing happens or the pressure is low you have a refrigerant problem (a leak).
Another common problem is the thermo (radiator) fan.
A number of air-conditioned cars have electronic thermo fans. If the fan controller is not working, the A/C compressor wont kick in.
You can try disconnecting the coolant temperature sender and see if the fan runs.
The temp sender is green and located close to where the 'top' radiator hose is connected to the engine.
Disconnect the electrical connector on the sender and start the engine. The fan may take a few seconds to kick in.

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GiveMeABreak
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Re: Air Conditioning just stopped working Citroen C3 1.4 HDI

Post by GiveMeABreak »

Don't tell Greta you're letting refrigerant out into the atmosphere - she'll just start her next crusade right on your doorstep ....

ozvtr
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Re: Air Conditioning just stopped working Citroen C3 1.4 HDI

Post by ozvtr »

GiveMeABreak wrote:
20 Apr 2021, 10:10
Don't tell Greta you're letting refrigerant out into the atmosphere - she'll just start her next crusade right on your doorstep ....
LOL! It will take her a few weeks to sail here! So I have some time to escape.
Don't tell her about the US still selling R12 and R134a over-the-counter!

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GiveMeABreak
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Re: Air Conditioning just stopped working Citroen C3 1.4 HDI

Post by GiveMeABreak »

:rofl2: - I know - that just puts it all into perspective!