L322 Air Conditioning (I know I know)

Girthy said:

Good Afternoon all,
So probably a common issue but looked throught the threads for my particular issue and couldn't spot anything.
AC blowing warm and sometimes even hot air..... had it gassed and there's no leaks or loss of fluid.
What I have noticed though is that the compressor is turning all the time regardless of whether there is a demand for cool air or not.... I just wanted someone to validate my thoughts that the compressor (clutch) is well and truly Donald Ducked, before I shell out for a new one.
Many thanks in advance
Girthy...... oh sorry it's an L322 4.4 TDV8 2011.

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Graculus said:

It's the variable displacement type - it does have a clutch but that won't be the problem, you can either remove the compressor & install a new control valve (LR086045) or replace the compressor - it all depends upon if, and how much you pay for labour as to which repair is the best.

This is the compressor, the supplier is 'known good' - I've used them probably half a dozen times, the price is a bit higher than usual as it's 'aircon season'. https://www.ebay.co.uk/itm/134932703716

Most 'modern' (mid-1990's on) HVAC systems work on the reheat principle, that is, all air is chilled to remove moisture, then heated to the requested temperature. The percentage of engine power consumed is minimal, so you're unlikely to notice any mpg difference but would notice the amount of moisture trapped in the vehicle.

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