Forum Discussion
azrving
Feb 04, 2015Explorer
I have never replaced one but here is a service manual and the ac heater part. It shows 2 fuses on the board. Fuse 3 is for the ac heater circuit. The trouble shooting guide starts on about page 15. It's probably indicating a problem in that circuit, not a failure of one particular component. Maybe it is, but it seems unlikely as there are multiple parts and reasons that the circuit could fail. Remove both ac and dc power before working on it.
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