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2001 S40 a/c issue

Help, Advice, Owners' Discussion and DIY Tutorials on S40 and V40. In this forum you'll find S40/V40-specific owners asking and answering questions on maintenance, ownership, repairs, tutorials and almost every do-it-yourself thing you can do to save money owning these Volvos.

1996 - 2004 S40
1996 - 2004 V40

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Rajahassan
Posts: 2
Joined: 19 May 2023
Year and Model: 2001 S40
Location: Australia

2001 S40 a/c issue

Post by Rajahassan »

Hi, I have an issue with my a/c. The a/c comes on intermittently without me turning it on. The airflow knob is set to off. The a/c light turns green and then orange again repeatedly . I would really appreciate if someone could suggest a fix.

Thanks.
Hassan.

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Krons
Posts: 1073
Joined: 9 January 2022
Year and Model: 08S60 05XC90 02S60
Location: Des Moines, IA
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Post by Krons »

Is it set on defrost? The AC may be coming on to pull moisture from the cabin and keep the windows from fogging.
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Rajahassan
Posts: 2
Joined: 19 May 2023
Year and Model: 2001 S40
Location: Australia

Post by Rajahassan »

Hi, just checked it again. The defrost is not on. Found something interesting. When I press the fan switch inside towards the panel the a/c turns off. I’ve read on other posts that the potentiometers can be an issue. Do you reckon it could affect the a/c button as well?

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