sorry to bump this thread, but it seems to be the main dicussion on this.
i just re-soldered every joint on my ccu and it performs the same task as before, just opening vents, letting heat through on defrost, but still no blower at any setting.
im not sure if i have to get inside this unit, because it explains three ccu boards but only has pictures of the unit assembeld.
what still needs to be checked on this board before i move onto other possible problem areas on the car?
my heat/ac has worked for multipe months at a time perfectly so this makes me think its something electical.
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