V70 aircon problem

the compressor clutch seems to be switching on and off evey 20 -30
seconds on for 30 off for 30

any ideas?

 

Too less fluid in the system. Must be refilled.

Gemini

 

Gemini
Feb 4, 4:02 pm show options

Newsgroups: alt.autos.volvo
From: "Gemini" <> - Find messages by this author
Date: Sat, 4 Feb 2006 17:02:59 +0100
Local: Sat, Feb 4 2006 4:02 pm
Subject: Re: V70 aircon problem
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<> schreef in bericht

Too less fluid in the system. Must be refilled.

Gemini



I have been told it is full when I went to get it filled

 

the compressor clutch seems to be switching on and off evey 20 -30

Does it work properly, then there might be no problems.

Niels

 

Does it work properly, then there might be no problems.

Hi, no it does not work at all, no cooling

 

Does it work properly, then there might be no problems.

I think you should get a second opinion on the liquid level.
If ok, the workshop should be able to find whats causing the problem
elsewhere.

Niels

 

The a/c on the 70series works via a variable pressure switch, not an on /
off. The ECU controls the a/c clutch and cooling fan.

What behaviour does your cooling fan have? A failed motor will also cause
the cycling of the compressor.

If the fan is ok, then refridgerant level too low or too high you will also
generate this behaviour. There is no HP port on the system so correct charge
is via vaccuuming down and then adding the under-bonnet posted weight of
R134a. If you are a volvo dealer you would also plug into the ECU and
monitor the correct pressures as you charge it.

Tim..