Defender ac

[rangieman]

has any one had the same prob . i thought my ac was stuffed it was,nt working ,(blowing cool air)

untill this morning coming home from work

i thought i would put the ac fan on to help with the heater .

i turned the thermostat to zero and as i was driving along i thought um turn the thermostat to the cool position and wacko it blows cool air ?

now maybe i should read the owners book but i thought i would post this instead ,

so is the trick to turn your thermostat down before turnig the ac fan on

or do i have other issues

come on technos help would be nice :oops:


cheers chris 8O

[disconut]

I hope this helps.
The defender has two separate systems, one for the heater air flow to the screen and footwell vents. (also blows ambient temperature air if the heater slide is set to cool).The fan switch on this unit just increases the air flow for the heating or ambient air flow.

The other system is the airconditioner, it blows air out of the centre vents. You need the a/c fan running, then set the a/c cooling to one of the positions on the switch with the blue indications.

Trev.

[CraigE]

I have found ideally turn on the fan then the thermostat. I found that if you leave the thermostat flat out then turn on the fan sometimes it does not get cold or is not effective.

[dages]

Got me buggered the defender aircon, two months now and still can't work it out!

Seems to have a fair bit to do with outside air temp. Above 35 degrees it's blowing warm air, below that temp and it's freezing my kneecaps.

I also find the fan speed at two blows cooler air than at full speed.

[CraigE]

Overall I would have to say they are the poorest designed and poorest efficiency of any air conditioners I have seen. For taking up so much room they should freeze the whole car and the surrounding countryside. But at most they freeze your knees.
:cry:

[bk]

I have been looking around for a aftermarket AC for my defender. But the way people are talking here - is it worth the trouble? ia the AC worthwhile in say 35 to 45 degree heat?
paul

[YRVGreen]

Im with you on that,... and to make it worse,.. my nobs have no marking left on them,.. I thought I could work it out after a while,.. but It is soo confusing, that it is messing with my head more then cooling me down,.. Im tempted to rip it out and find a cheap roof mounted one,.. if only I didnt allready have a cage up there,..
can some one with a Defender Please take a pick of the dials on the air con if they still have it read able??

[DEFENDERZOOK]

<span style="color:blue">if they had a recirculate function they would freeze more than just your knees.....!!

the problem is they are taking in air at 35 degrees and blowing it out at ....
lets say for arguements sake....25 degrees.....

25 degree air temp for me is still hot.....especially when the rest of the vehicle is
way hotter than the 35 degree outside airtemp.....


now if it had recirculate.....it would then take air at less than 35 degrees...
as it has already been cooled a bit......and cool it down by another 10 degrees......
so...after about 10 or 15 minutes.....it should be cold enough to want to turn the aircond down.....

now if someone has a way to get them to use the air from inside the cabin....
it should make them a lot more efficient......</span>

[disconut]

The biggest problem with them is they do not seem to have a selectable recirc setting. I checked mine out and it appears to suck air in from around the floor area.
Permanent recirc?
Having such a hot car, (most defenders have crappy insulation), the faster you draw air over the a/c the less efficient it actually is. Slowing the air flow down actually helps.
I have added insulation under my floor mats, under the cubby box, under the seats, and any exposed metal area's in the cabin. Apart from being quieter it really helps.
My two knobs, (see pics in my signature bar link), point at about 40 degs down from right to left for off. Each click upwards gives more air flow or greater cooling.The left hand one is the a/c control, the right hand one fan speed.

Don't forget to close off the air inlet on the instrument fascia. All 3 levers up to the highest point, otherwise you have ambient air coming in to the cabin as you are trying to cool it down.
Most inefficient!

Trev.

[rangieman]

Next question just been out for a drive and did the same as this morning and she no blow cool air ?


go figure


im lost :roll:

[disconut]

Sounds like the a/c temp control unit or the a/c clutch switch could be faulty.

Trev.

[rangieman]

fan works but no cool air it might be a dry elec joint on the wire to compressor ill check it tomorrow

[DEFENDERZOOK]

<span style="color:blue">can you hear the compressor click in when you turn the air con on and off....?</span>

[YRVGreen]

Ours dont look like that at all, we have one nop that has another nob on top of that nob, it looks fairly odd,..
I wish we had 2 clear seperate ones like that, it would make more sence

[Lionel]

On my 2004 Defender, the standard A/C system is recirculating. It does NOT use air from outside the cabin. It is a completely separate system from the heating.

Cheers,

Lionel

[JamesH]

There are two knobs on top of each other. The top inner clicky knob is the fan speed at 7 o'clock it is off and turn it clockwise it has three speeds. In lower non clicky smooth dial is the temp control. at 7 o'clock it is off and it turns clockwise from there to 5 o'clock or so for maximum cool.

I know the aircon isn't the greatest but I'm glad it's there. Keeps my wagon livable in dry Perth heat. I play in a pipe band and the air goes nicely up the kilt on hot days.

I had troubles with it - the clutch would not come in on hot days it turned out to be a faulty switch fixed for a $100. Of course a month later I crashed the car into a rock and damaged the unit.

From time to time it does leak a bit into passenger footwell and yes it has made a sloching sound on corners but it has not done so for awhile. The draingage hole lets some water out but in certain conditions perhaps not enough.

[Scouse]

Originally posted by bk
I have been looking around for a aftermarket AC for my defender. But the way people are talking here - is it worth the trouble? ia the AC worthwhile in say 35 to 45 degree heat?
paulUp until around 01 or 02MY, all Defender A/Cs are an aftermarket system. They were designed by AMC at Granville in Sydney who, I believe, are now out of business. They might have fitted them to new cars but it was still aftermarket.

The A/C is now UK fitment but it seems just as bad as the AMC system.

[matbor]

If u want better air con, check this out....
http://www.aulro.com//modules.php?name=For...4277&highlight= (http://www.aulro.com//modules.php?name=Forums&file=viewtopic&t=4277&highlight=)

[rangieman]

Ok ive worked out the problem it is a faulty wire connection on the relays under the seat that operates the clutch on the compressor

all i did was wigle the wires and bingo

that is another job to be done no time at the moment


thanks again for all your help guys https://www.aulro.com/afvb/


cheers chris