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#1
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FAN DIAL A/C or HEATER
1999 CIVIC DIAL KNOB, FAN STAYS ON LOW, IN ALL SETTINGS EXECPT THE HIGHEST,
EVEN IN THE OFF POSITION. A/C WORKS FINE. ANY SUGGESTIONS ON HOW OR WHERE TO START LOOKING TO TRUOBLESHOOT GREATLY APPRECIATED. THANK YOU. |
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#2
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On Wed, 09 Mar 2005 18:01:40 -0500, paulvazzo > wrote:
>1999 CIVIC DIAL KNOB, FAN STAYS ON LOW, IN ALL SETTINGS EXECPT THE HIGHEST, >EVEN IN THE OFF POSITION. A/C WORKS FINE. ANY SUGGESTIONS ON HOW OR WHERE >TO START LOOKING TO TRUOBLESHOOT GREATLY APPRECIATED. THANK YOU. 1) Trade in that 50's teletype you're using and get a terminal that supports lower case. Most humans find all uppercase to be an eyesore. 2) Get a repair book or manual with an electrical diagram. Visit the library if you're too damn cheap to buy one. Or visit a dealership and ask to look at a shop manual. If the fan is on low even in the "off" position, I think you have a bad fan switch -- the thing sitting behind the knob you flick to change speeds. There's also a "resistor" block with it's business end in the air flow probably on the fan itself or not too far from it. It's 2 or 3 coils of wire that restrict the electrical current flow in order to arrive at the slower fan speeds. All you'll see until you remove it is an about 2" square with a wiring harness pluged into it with about 3-6 wires coming off it. However, it's probably the switch that's bad. |
#3
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Are you saying the fan operates (low to hight) just fine in AC? That
does not make much sense, so I am assuming this is not the case. Sounds like something is wrong in the switch because the 'off' position is an open position under normal circumstances. Don't see how the fan's resistor could possibly cause it to not turn off so that's not it. Perhaps the common connection of the switch is permanently tied to one of the contacts, maybe at the switch' connector. In that case, switching to another setting may make a very small difference in the speed of the fan motor, but you'll probably not notice it. Remco |
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