air con compressor cutting out

Mike · 22nd July 2009, 13:53

Description of air con problem on R40 as given by garage doing the regas this morning:

system works normally until hi pressure pipe becomes v.hot then compressor cuts out to protect. Suspect a blockage in the hi pressure pipe. Can't be more definite without further investigations and strip out to find the blockage.

Any advice on what this could be?

Thanks

Mike

stocktake · 22nd July 2009, 14:13

How to suck eggs and all that Mike, is the fan running?

FROGGY · 22nd July 2009, 14:45

Quote:

Originally Posted by Mike

Description of air con problem on R40 as given by garage doing the regas this morning:

system works normally until hi pressure pipe becomes v.hot then compressor cuts out to protect. Suspect a blockage in the hi pressure pipe. Can't be more definite without further investigations and strip out to find the blockage.

Any advice on what this could be?

Thanks

Mike

Hi Mike

It is possible that the HP side is restricted or blocked, this was offered to me as a possibility by a Rover A/C tech.
On my car the problem was a lack of finning on the A/C condenser (the first bit you see behind the fan), so have a GOOD look at yours before spending money.
If it is restriction in the HP side, the same tech (who is very good) told me the normal cure is to do a very long evacuation (1/2 hour) before a recharge.

HTH

Mick

Mike · 22nd July 2009, 17:06

Quote:

Originally Posted by stocktake

How to suck eggs and all that Mike, is the fan running?

Dave,

went to pick the car up and guess what..........

no fan

one would have thought the garage would have spotted that one

doh!!

Mick, thanks for your advice also

GrahamP · 22nd July 2009, 20:33

Quote:

Originally Posted by FROGGY

On my car the problem was a lack of finning on the A/C condenser (the first bit you see behind the fan), so have a GOOD look at yours before spending money.

You mean like this

Had it replaced by Jules while he was sorting out another fan problem, the fins just crumbled away when touched.

FROGGY · 22nd July 2009, 20:42

Quote:

Originally Posted by GrahamP

You mean like this

Had it replaced by Jules while he was sorting out another fan problem, the fins just crumbled away when touched.

Compared to mine that's a good one!

Mick

stocktake · 22nd July 2009, 20:48

Quote:

Originally Posted by Mike

Dave,

went to pick the car up and guess what..........

no fan

one would have thought the garage would have spotted that one

doh!!

Unbelievable, for what seems to be a competant Air con setup

I take it you put them right?

I assume R40 is a three speed

GrahamP · 22nd July 2009, 21:43

Quote:

Originally Posted by FROGGY

Compared to mine that's a good one!

Mick

The aircon was still working correctly with the fan on low speed and had a full gas charge before it was degassed but the high speed relay had burnt out, that's another story.

JohnDotCom · 22nd July 2009, 22:08

Mike Contact Jules,
I'm sure he will sort you out far cheaper and more efficiently.

Mike · 22nd July 2009, 22:27

Quote:

Originally Posted by stocktake

I assume R40 is a three speed

Yes Dave. Nearly 9 years fan motor life so can't complain too much!

Quote:

Originally Posted by JohnDotCom

Mike Contact Jules,
I'm sure he will sort you out far cheaper and more efficiently.

Thanks John, will do

22nd July 2009, 13:53	#1
Mike This is my second home Rover 75 V8 Join Date: Oct 2006 Posts: 3,448 Thanks: 0 Thanked 206 Times in 32 Posts	air con compressor cutting out Description of air con problem on R40 as given by garage doing the regas this morning: system works normally until hi pressure pipe becomes v.hot then compressor cuts out to protect. Suspect a blockage in the hi pressure pipe. Can't be more definite without further investigations and strip out to find the blockage. Any advice on what this could be? Thanks Mike __________________ Mike [SIGPIC][/SIGPIC]

22nd July 2009, 14:13	#2
stocktake Vis Whiz Rover 75 2.5 auto Saloon Join Date: Jun 2007 Location: LEEDS Posts: 20,587 Thanks: 2,057 Thanked 3,056 Times in 1,621 Posts	How to suck eggs and all that Mike, is the fan running? __________________ Dave... Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident

22nd July 2009, 22:08	#9
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	Mike Contact Jules, I'm sure he will sort you out far cheaper and more efficiently.