dougrainer wrote:
Johno02 wrote:
Apparently no one ever told Ford Trucks how to build a temperature control that works. Mine have all been the same way, either on or off, no in between.
NO Class A motorhome has a FORD/Chevy AC/Heater system. They are ALL aftermarket add on systems. The problem the OP is experiencing is normal. Class A Motorhomes do NOT use the blend door systems Automobiles use that regulates the Hot and Cold to a even set temp. While the Temp control does rotate. the problem is simple, once the valve is even slightly opened to allow Hot water thru the Heater Core, it only takes less than 15 minutes for that heater core to get to the Engine Coolant temp(usually around 185 degrees). With NO blend door system, that means the output of air will be HOT and not lukewarm like you would like it. Doug
dougrainer, I'm surprised that there's no blend door (or some way to moderate the temperature between on/off). This is the first Class A I've owned. Have other Class A owners seen similar behavior?
Also, I can moderate the temperature a bit. I.e., there's a very narrow area on the dial (perhaps a 1/20th of a full turn of the dial) where I can get the temperature to not be hot or cold. However, bumping the dial even a very little bit either way causes it to go full cold or hot.
