Heater Control not working on dash
OK, I've diagnosed to the full extend of my knowledge (which is not much) on fixing my heater/ac blower motor on my dash from working only on high. I've replaced the resistor and the relay still only...
Forum Discussion
If it's a Class A on Workhorse, we had a case of a stuck relay.
Also, if the vacuum to the mode select "switch" (actually a vacuum switching valve) has failed (broken hose, leaky reserve tank, bad select switch), then the system defaults to Defrost.
We need Make, Model, Year. Chassis year, not RV model year.
Also, if the vacuum to the mode select "switch" (actually a vacuum switching valve) has failed (broken hose, leaky reserve tank, bad select switch), then the system defaults to Defrost.
We need Make, Model, Year. Chassis year, not RV model year.
