Air con has packed up - Page 2

Arctic · 5th August 2020, 12:06

Do a demist test first to see if the front cooling fan is running continually, on a diesel ignition to II no need to start the car, make sure all the A/C is in the off position then press the demist button only go to front of the car and look through the front grill to see if the fan is running or not.

If not check if you have a silver resistor in place at about 2.00 Oclock if yes then change it for a gold one.

1

2

If not the lower speed as failed which works in conjunction with the A/C

3

pletevl · 5th August 2020, 12:45

OK, so did the diagnostics check and nothing happens ! how long do I need to keep the 2 buttons pressed for ?

And the demist test, the radiator fan is not spinning. I already have a gold resistor, 200 watts that I put in 5 years ago.

Correct me if I'm wrong, but if the resistor has failled, doesn't the fan run at full speed when you switch the demist on ???

Pete.

SD1too · 5th August 2020, 13:30

Quote:

Originally Posted by pletevl

And the demist test, the radiator fan is not spinning.
... if the resistor has failed, doesn't the fan run at full speed when you switch the demist on ?

Hi Pete,

If the resistor has failed there will be a period of no fan activity whilst the refrigerant pressure rises sufficiently to trigger the fast speed. Thereafter the fast speed will normally pulse on and off.

In your opening post you reported that your air conditioning has "stopped working". Can you expand on that please? Are you getting no cooling whatsoever? If so, please check that the compressor is engaging when you press the demist button. Check this visually as Colvert advises and report back to us a.s.a.p.

Simon

pletevl · 5th August 2020, 13:43

Simon,

OK, I will take a look when I get in.

3 weeks ago it was working perfectly, I then left the car for 3 weeks, got in it Tuesday and the aircon is doing nothing, no cooling at all.

Pete

COLVERT · 5th August 2020, 13:46

As Simon says in the above post.

The first paragraph. The engine needs to be running for this test.----

SD1too · 7th August 2020, 08:12

Quote:

Originally Posted by SD1too

... please check that the compressor is engaging when you press the demist button.

Quote:

Originally Posted by pletevl

OK, I will take a look when I get in.

Any news on this please Pete?

Simon

pletevl · 7th August 2020, 09:55

Hi Simon,

no not yet, sorry, not had time to take a look. I'm not using the car because of the aircon, it's too hot here.

Pete

Arctic · 7th August 2020, 10:21

Quote:

Originally Posted by SD1too

Hi Pete,

If the resistor has failed there will be a period of no fan activity whilst the refrigerant pressure rises sufficiently to trigger the fast speed. Thereafter the fast speed will normally pulse on and off.

Quote:

In your opening post you reported that your air conditioning has "stopped working". Can you expand on that please? Are you getting no cooling whatsoever? If so, please check that the compressor is engaging when you press the demist button. Check this visually as Colvert advises and report back to us a.s.a.p.

Simon

As above to visually look to see if the compressor clutch is kicking in, the engine as to be running video below.

https://youtu.be/KdjoTyGMH-k

Number 6 · 7th August 2020, 20:13

Quote:

Originally Posted by Arctic

As above to visually look to see if the compressor clutch is kicking in, the engine as to be running video below.

https://youtu.be/KdjoTyGMH-k

In the original post, it was suggested to press the Auto and Distribution buttons together. Does the engine need to be running to get any faults displayed?

5th August 2020, 12:06	#11
Arctic Give to Learn Freelander 2 Join Date: Aug 2010 Location: West Midlands Posts: 18,713 Thanks: 1,155 Thanked 6,407 Times in 3,874 Posts	Do a demist test first to see if the front cooling fan is running continually, on a diesel ignition to II no need to start the car, make sure all the A/C is in the off position then press the demist button only go to front of the car and look through the front grill to see if the fan is running or not. If not check if you have a silver resistor in place at about 2.00 Oclock if yes then change it for a gold one. 1 2 If not the lower speed as failed which works in conjunction with the A/C 3 __________________ Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise "

5th August 2020, 12:45	#12
pletevl Posted a thing or two rover 75 cdti(rhd), MG ZR(lhd), MG TF(lhd), MG TF(rhd), mini mpi (lhd), Renault megane III (awful) Join Date: Mar 2014 Location: East of France Posts: 1,282 Thanks: 124 Thanked 114 Times in 93 Posts	OK, so did the diagnostics check and nothing happens ! how long do I need to keep the 2 buttons pressed for ? And the demist test, the radiator fan is not spinning. I already have a gold resistor, 200 watts that I put in 5 years ago. Correct me if I'm wrong, but if the resistor has failled, doesn't the fan run at full speed when you switch the demist on ??? Pete.

5th August 2020, 13:43	#14
pletevl Posted a thing or two rover 75 cdti(rhd), MG ZR(lhd), MG TF(lhd), MG TF(rhd), mini mpi (lhd), Renault megane III (awful) Join Date: Mar 2014 Location: East of France Posts: 1,282 Thanks: 124 Thanked 114 Times in 93 Posts	Simon, OK, I will take a look when I get in. 3 weeks ago it was working perfectly, I then left the car for 3 weeks, got in it Tuesday and the aircon is doing nothing, no cooling at all. Pete

5th August 2020, 13:46	#15
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	As Simon says in the above post. The first paragraph. The engine needs to be running for this test.----

7th August 2020, 09:55	#17
pletevl Posted a thing or two rover 75 cdti(rhd), MG ZR(lhd), MG TF(lhd), MG TF(rhd), mini mpi (lhd), Renault megane III (awful) Join Date: Mar 2014 Location: East of France Posts: 1,282 Thanks: 124 Thanked 114 Times in 93 Posts	Hi Simon, no not yet, sorry, not had time to take a look. I'm not using the car because of the aircon, it's too hot here. Pete