Climate control fan only works on high
 

Well after exhaustive searching on the forum I have come up empty...but have gotten a wealth of other info though!

I have a 2006 Shinka

Here is my issue, heater fan only works on the high setting. Temp works fine, and it blows well on high. If I turn on the a/c, the a/c will illuminate on any speed (other than 0 of course), but there again the blower only works on high.

Anyone have any insight whatsoever?

Thanks

I would read up on this...

https://www.rx8club.com/series-i-do-yourself-forum-73/diy-no-heat-repair-heater-control-158200/

...it's for the wrong knob...same concept though...

Common problem on most cars.

The knob sends power to the motor through 1, 2 or 3 resistors, if it goes thru all three, that is slow speed, thru 2 gives you faster speed, etc. Only the top speed setting goes direct to the motor, so if one of the resistors burns out this is the only speed that works. That isolates the problem to the #3 resistor.

They burn out because they get really hot in normal use, so they are built into the duct that the motor blows thru.....I bet you used the fan on its 'almost-top-speed' a lot, that will burn it out quickly, #3 resistor gets the hottest.

The solution is to buy/find a new resistor block. It is located at the outlet of the fan and has a large plug with 4 or 5 wires in it.

EasyPeasy.

S

Awesome stealth, I will have to check that in the AM. Need to get a service manual soon.

I've seen many, but not the RX-8 one - it is usually a two-inch square of plastic with a connector on the outside and three crappy coils on the inside, in the duct.

Be nice if you took some jpg's and did a DIY thread! You'd be famous....

Doing it now! Success. It was the resistor block. Will post a writeup and how I fixed it...without buying parts..shortly

And now it has become a DIY! Here: https://www.rx8club.com/series-i-do-yourself-forum-73/diy-climate-control-blower-resistor-fix-test-191801/