DETAILS, FICTION AND AUTO PARTS.................................................................................................................................................................................................................................

This will occur when a heating element is shorted, a regulating thermostat or thermister fails, or by using a partly restricted exhaust vent. The fuse attaches to the blower wheel housing. It will have to be replaced when there isn't a longer continuity involving the terminals. this is the one-time fuse, which means it can't be re-set. The substitu