Weird! My blower speed does not respond to the adjustment knob - it just goes full tilt all the time. The AC does, however, cycle off when then knob hits the off position (and defrosting). Anyone hear of/have this problem before? I hope it's not the heater control unit - 9 at Majestic Honda. I might be able to score one at a salvage yard for under 0. For now, I'm just putting up with the noise and adjusting temp as needed.