Thread: Air Conditioner Icing Up

It isnt something real silly like blocked drains???? Sometime the simple issues are overlooked.
Andrew

I had that problem with my Commodore. Check the condensate is draining quickly enough. If it's not, the vaporator gets immersed in the condensate and it freezes.

Common
Turn fan down 1 notch when it's humid.

As the fella's above have said, a coil ice up is usually the simple things.

These problems are what can cause any refrigeration/air conditioning coil to ice up (and several have been 'fixed' on your car)

Lack of air flow through evaporator. eg. fan motor failure, fan blade spinning on shaft, blockage, eg plastic bag sucked into the return air. (pretty common) ducting/shroud misaligned so air is by-passing coil, etc.

Blocked drain, partially blocked drain, coil sitting in the drip tray (needs an air gap between water and coil or icing will result)

Thermostat set too low cut out temp. Thermostat cut in temp too low. Thermostat points fused.

TX valve being partially stuck shut causing an external ice up is pretty uncommon, usually the LP control will trip creating short cycling before that happens.

very commen prob with the puma's, the way the air flows onto the evaporator is useless, if you sore it you'll no what i mean,

and they let the ac get so cold so it works as good as it dose, but that has brought on this problem, the temp sensor on the evaporator needs to be set 1-2deg higher and it would fix the prob,

I wish I could get mine cold...

used to ice up till they fixed it couple years ago now it gets cool and on a long drive might as well noot have it on as it seems to cool nothing.

Mine works very well.

For all those that are critical just remember that this the first factory fitted Defender AC that comes within cooee's distance of the definition of Air Conditioning.

Those prior to the Puma could also open the flaps and imagine.

Seriously though with humid air try adjusting the temperature and fan speed. It might reduce the cooling effect but might also stop the moisture from condensating and freezing on the coil.

Originally Posted by dullbird

I wish I could get mine cold...

used to ice up till they fixed it couple years ago now it gets cool and on a long drive might as well noot have it on as it seems to cool nothing.

Open up your flaps Lou.
I had a steer of The Grinch's Defer the other day,opened the flaps up NICE!!!!
Pumas dont have flaps do they????
Andrew