A/C only blows hot air...
#27
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mine has this problem first it started w only the passenger side blowing kinda cool air and hot air on the driver side they fixed it they said it was a faulty o ring.4 months later same thing they fixed it again they said i needed a new ac compressor so they ordered it they still havent called me but then again it's only been 3 days
#28
Registered User
If the symptom is that there is no heat and only cooling I would suggest checking out this hasty DIY I put together after successfully repairing the heater control unit. It may apply to the "only heating and no cooling" as well. The easy way to check is turn radio on, press and hold the power botton then press and hold for 1 full second the up-scan button. The display should read "AC" on the left and a number from 0 to 16 on the right. The number should change evenly from 0 to 16 in increments of 1 as you move the temperature **** from cold to hot. If it does not (most commonly stays at 0 despite **** position) then your temperature control **** has bad solder joints. See DIY below:
https://www.rx8club.com/showthread.p...31#post2675231
Good luck.
https://www.rx8club.com/showthread.p...31#post2675231
Good luck.
#29
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Awesome tip. ^
A few days ago I found that my temp **** was acting for the normal temp range for all settings until it got to max heat, then it switches over to max cold, and i have to cycle the button a few times back and forth before it does anything but cold air. 1 tick away from max heat keeps it fine atm.
Edit:
I did this on the way into work. going from 0 to 1, it blips to 1, but then back to 0, and doesn't move for any of them. Thanks for the tip for quick diagnosis.
A few days ago I found that my temp **** was acting for the normal temp range for all settings until it got to max heat, then it switches over to max cold, and i have to cycle the button a few times back and forth before it does anything but cold air. 1 tick away from max heat keeps it fine atm.
Edit:
I did this on the way into work. going from 0 to 1, it blips to 1, but then back to 0, and doesn't move for any of them. Thanks for the tip for quick diagnosis.
Last edited by RIWWP; 10-09-2008 at 11:12 AM.
#31
#32
I HATE SPEEDBUMPS!
My a/c blows hot air when the **** is all the way to the left (max cold), and i was playing with the **** and when i put it in the middle, it was cold...weird
#34
I HATE SPEEDBUMPS!
#38
Registered
So Idk if anyone else has had this problem but my A/C blows hot air regardless if the A/C is on or not. Cold can be maxed out and still the same issue. Even when the fan is on the OFF position it still continues to blow hot air. I want to take the unit out and check the wiring but other than that I have no other ideas of what it could be. Any ideas?
#39
Driving my unreliable rx8
So Idk if anyone else has had this problem but my A/C blows hot air regardless if the A/C is on or not. Cold can be maxed out and still the same issue. Even when the fan is on the OFF position it still continues to blow hot air. I want to take the unit out and check the wiring but other than that I have no other ideas of what it could be. Any ideas?
so did you even read this and do the test. What is the lowest and highest numbers you get?
#40
So Idk if anyone else has had this problem but my A/C blows hot air regardless if the A/C is on or not. Cold can be maxed out and still the same issue. Even when the fan is on the OFF position it still continues to blow hot air. I want to take the unit out and check the wiring but other than that I have no other ideas of what it could be. Any ideas?
#41
Registered
I actually got it to work yesterday by turning the **** way harder than you should need to the cold side. Still having the issue of my A/C blowing air when it is in the off position. I'm thinking I may take the unit out and check wiring and such.
#42
Mine has started this after changing the radiator and one of the fans. No more overheating but now blowing hot air. Now the clutch clicks for a second then turns off. Now while parked I Rev the car to 2000 rpm and freon steamed out from the compressor a lot.
#43
Driving my unreliable rx8
rob, you still didn't figure that out huh. You should probably get a set of gauges on it. it might have a blockage and not be flowing freon through the system so it overpressures.
#44
Could be the heater control. From time to time, mine is on the coldest setting and blows hot air for a few seconds... until I tap it a bit and it gets cold again. Started recently. Happened 2 or 3 times for brief moments. I'll probably source a new one from the junk yard... or open it up and solder it.
#45
Anyone found a solution for the rx8 a/c problem? Mine is not working also. Just bought a new compressor and had it changed but when I switch the a/c on it doesn't come on unless I manually go to the front bonnet where the fuses are and open fuse box, open black smal cover of the a/c relay and press relay infront with an iron (fuse tester) of side of the relay. The it clicks and forces the a/c part of the compressor to spin. I tried switchim other relays to that particular a/c relay but its still the same. Some one pls help
Last edited by Bee Kay; 11-20-2015 at 06:19 AM.
#46
Driving my unreliable rx8
Have you checked the heater control know is functining. It is very common failure if 3 solder joints that are extremely easy to solder. It takes about a hour. From start to finish.
There's a simple function test for it also.
There's a simple function test for it also.
#47
Repair video
I made a video on youtube on how to fix this issue by resoldering the three connection points on the ac control motherboard.
https://youtu.be/CtXJUZPz-DI
Hope this helps
https://youtu.be/CtXJUZPz-DI
Hope this helps
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