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My heater switch only works on setting 4 and 5 fan setting

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The blower motor resistor is burned out between the third and fourth tap. The resistor is often mounted on the engine side of the firewall inside a box with a single connector going to it.

Posted on Apr 04, 2011

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My fan switch is not working on the 1, 2, and 3 settings. it only works on the 4 and 5 settings. Is this a fuse problem, fan switch problem or heater fan problem?


no your problem is you resistor its broken so you need to get a new one then your fan should work perfectly good lick hope i gave you a good hint.

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You may have a faulty fan switch. Had mine replaced when only #1 and #4 were working and it fixed the problem. Unfortunately, there may be more issues, as a year later the switch is failing again. May be some kind of feedback that is causing it to fail.

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Hi
It sounds like the heater control panel, where the switch is attached, try to remove it from the dash so you can have a better look behind it, If all appears to be correct then the switch itself has gone.

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How do I remove 1996 honda accord heater fan switch? I'm not sure if I need a new switch. Heater fan works only on high speed "4"


if the fan/motor only works on max No 4 setting ? then may i suggest you have a resistor fault or commonly known as a reostat in uk this is the component that provides the relevent reduced speeds on selection but when it fails only max speed works so you should find this unit attached on heater fan exterior if you follow wires from actual motor it will connect to the resistor unit ? then onward to switch control it is not to difficult diy and if you have access to manual/ it will give location/access for renewing? hope this helps/inspires you to diy ?

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you might check your switch sounds like to me that your two lower speed sides of the switch maybe burnwed out.

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Your blower motor resistor has gone bad, it should be located next to your blower motor in the car, held in place with a couple of screws, remove it and replace it. The resistor is responsible for making the blower motor run at slower speeds than high or (4). Let me know if this helps.

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it only takes a sprk to blow the heat and ac switch out such as installing a stero ormayby rounding the plastic off behind the switch

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If # 4 is the highest fan setting it might be the resistor pack that controls the fan speeds.For each speed increase the fan switch takes a resistor out of the resistor loop The highest speed is a direct connection to the battery. The switch is usually located very close to the fan since it gets quite hot and needs to be cooled by the fan.It is also generaly accessible from under the hood,but not always.Sometimes it is under the dash Hope this helps.

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you need to get a new heater switch. the other settings are worn out

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working on 4 and 5 speed that the resistor that broken cold air you got to move the selector to see the motor that move the trap hot and cold sometime when the motor was not move to the hot side for a long time its jam the motor on the passager side under dash put to hot and gently tap the motor tanks pierre

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