R32 Air Con Diagnostics...

[skippadude]

Hey all,

ive been doing abit of work on the a/c of late, read everything posted regarding it i can, which was of a massive help thanks to all those who had contibuted in the past.

ive come up with afew things that are making sense though:

first, the control arm issue, seems ok, when running the diagnostic test it says its ok and appears to be working ok but when running the a/c it dosent appear to be far enough back(back=cold, forward=hot yes?) it does go all the way back but not when the a/c is on, can anyone confirm weather this should be the case?

which leads into issue two, the sensors, the 3rd temp when running the diagnotic test shows a negative temp, but then changes its mind after afew mins and matches up with the others, i fiddled round with the resistors with no results it just bosted the temp setting when it came good, im thinking this is prob affecting issue one.

is the best way to fix this to replace that faulty? all the info has been great so far but ive done it all now to no avail, if anyone could sheed any more light on the situation or has fixed the same prob that would be great,

thanks:)

[__PhaseShiftDown]

Yes, the arm should move/extend all the way back , or pretty far and forth depending ont eh temperature setting. If you do Full Cold (hold down the cold button) and Full Hot (hold down the hot button), you should be able to verify its operation.

If you have a faulty temp sensor, then the air con won't work properly. Having said that, you can still verify the operation of the arm by doing Full Cold and change quickly to Full Hot.

[CrisG]

Hi Mate,

In regard's to the suspect sensor i would wait until it's reading correctly then unplug it and see if it come's up with the same negative temp reading, if so i would be looking at the sensor for dodgy solder joint's, the plug's & socket's for loose/dirty connections damaged wiring or inside the control unit for broken solder joints.

You could also short the sensor when it is reading incorrectly and correctly and see if you get the same temp readings. *** WARNING *** I doubt it but am not 100% sure that doing this will not have any adverse effects.

If the reading's are the same in the second test you can pretty much throw the sensor away... If the reading's are different then it's back to plug's, socket's or dodgy controller...

Hope this helps...

[skippadude]

thanks for the response guys,m still not having, muich lick, might have to take it to the pro's cause summer is fast approaching!

[Excess]

what exactly is the issue?

with the temperature rod, you can actually adjust the default level. that is , if your "cold" isnt cold enough , try having the rod a tag more close to the clip( this clip connects to the motor that moves the rod forward and backward)

as for the sensor, i presume it's the in-cabin sensor your referring to. if that's faulty, the climate control wont work. you can still manually adjust the rod if you know where it locates. (plug the rod out from the motor clip) just need something to hold it in place , as when u have the fan at high speed, the rod tends to move back as there is nothing to hold on the rod where it is suppose to be held by that motor.

Edited November 17, 2008 by Excess