Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Please check the Forum Guidelines at the top of the Newbie section

Pages: [1]   Go Down

Author Topic: Air con fan question  (Read 2083 times)

0 Members and 1 Guest are viewing this topic.

Andy A

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Bristol UK
  • Posts: 1101
    • Omega 2.2i CD manual 2003
    • View Profile
Air con fan question
« on: 29 August 2018, 17:02:19 »
Just had the air con re-gassed and noticed a change in how the fans are working.

Its a 2.2 2003 with 1 fan in front of the condenser and 1 fan at the back of the radiator. Both fans are running all the time with the air con on and that is normal.

After the re-gas the fan behind the radiator keeps turning on to the highest fan speed and back off again, every few seconds.

I have owned the car for over 4 years and not once did it ever do this. The engine temperature is normal, so its not an over heating problem.

Is this normal and if it is why has it only started to do this now after 4 years?

Thanks
« Last Edit: 29 August 2018, 17:07:19 by Andy A »
Logged

Kevin Wood

  • Global Moderator
  • *****
  • Offline Offline
  • Gender: Male
  • Alton, Hampshire
  • Posts: 36379
    • Jaguar XE 25t, Westfield
    • View Profile
Re: Air con fan question
« Reply #1 on: 29 August 2018, 17:22:59 »
Do both fans accelerate to full speed? I'm guessing so.

This can be triggered by either high coolant temperature or high air con system pressure. Could be that the air con is just tripping the pressure switch, which brings in extra cooling that lowers the pressure and so on...
Logged
Tech2 services currently available. See TheBoy's price list: http://theboy.omegaowners.com/

Andy A

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Bristol UK
  • Posts: 1101
    • Omega 2.2i CD manual 2003
    • View Profile
Re: Air con fan question
« Reply #2 on: 29 August 2018, 18:56:37 »
Quote from: Kevin Wood on 29 August 2018, 17:22:59
Do both fans accelerate to full speed? I'm guessing so.

This can be triggered by either high coolant temperature or high air con system pressure. Could be that the air con is just tripping the pressure switch, which brings in extra cooling that lowers the pressure and so on...

I'll double check tomorrow after a journey I have to make. I only remember the 1 rad fan accelerating though. Coolant temperature was normal.   

If the air con is triggering the pressure switch is this normal or could it have been over re-gassed by the garage today?
Logged

Doctor Gollum

  • Get A Life!!
  • *****
  • Offline Offline
  • Gender: Male
  • In a colds and darks puddleses
  • Posts: 29736
  • If you can't eat them, join them...
    • Feetses.
    • View Profile
Re: Air con fan question
« Reply #3 on: 29 August 2018, 19:30:10 »
If yesterday was significantly cooler/warmer than today, then it might have a bearing on gas volume ;)
Logged
Onanists always think outside the box.

Andy A

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Bristol UK
  • Posts: 1101
    • Omega 2.2i CD manual 2003
    • View Profile
Re: Air con fan question
« Reply #4 on: 29 August 2018, 19:33:22 »
Quote from: Doctor Gollum on 29 August 2018, 19:30:10
If yesterday was significantly cooler/warmer than today, then it might have a bearing on gas volume ;)

Filled today and drove home to discover the fan doing what it is. Driving it to Yorkshire soon. Is it safe to leave it like that? The fan is kicking into high speed every few seconds on the drive when I got back from the garage.
« Last Edit: 29 August 2018, 19:39:28 by Andy A »
Logged

Andy A

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Bristol UK
  • Posts: 1101
    • Omega 2.2i CD manual 2003
    • View Profile
Re: Air con fan question
« Reply #5 on: 30 August 2018, 09:43:37 »
Quote from: Kevin Wood on 29 August 2018, 17:22:59
Do both fans accelerate to full speed? I'm guessing so.

This can be triggered by either high coolant temperature or high air con system pressure. Could be that the air con is just tripping the pressure switch, which brings in extra cooling that lowers the pressure and so on...

Got a Hospital appointment this morning so I can have a good check on it. The air con middle vents temp was around 3.5c. Best its been since I've owned the car.

If it is down to the air con having high pressure would you advise taking back to the garage ASAP or will it be OK to leave it as it is for a couple of weeks?

I don't think the garage will have time to fit it in before we go away.

Logged

Kevin Wood

  • Global Moderator
  • *****
  • Offline Offline
  • Gender: Male
  • Alton, Hampshire
  • Posts: 36379
    • Jaguar XE 25t, Westfield
    • View Profile
Re: Air con fan question
« Reply #6 on: 30 August 2018, 09:49:40 »
I don't think it'll be a problem. If the pressure gets dangerously high the compressor is locked out until it reduces, IIRC.

It's clearly working efficiently with that vent temperature!

You will probably find that, once you're on the move, the extra airflow due to the vehicle's motion stops the fans going the high speed anyway.  :y
Logged
Tech2 services currently available. See TheBoy's price list: http://theboy.omegaowners.com/

Andy A

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Bristol UK
  • Posts: 1101
    • Omega 2.2i CD manual 2003
    • View Profile
Re: Air con fan question
« Reply #7 on: 30 August 2018, 10:15:08 »
Quote from: Kevin Wood on 30 August 2018, 09:49:40
I don't think it'll be a problem. If the pressure gets dangerously high the compressor is locked out until it reduces, IIRC.

It's clearly working efficiently with that vent temperature!

You will probably find that, once you're on the move, the extra airflow due to the vehicle's motion stops the fans going the high speed anyway.  :y

Thanks Kevin.  :y
Logged
Pages: [1]   Go Up
« previous next »
 

Page created in 0.014 seconds with 18 queries.