Uncle Mark
New Member
Howdy, I think my temperature adjustment control knob for the heater/AC is dirty and not making proper contact. I noticed when weather warmed up and I turned it to cool, the heater did not want to get warm again. After awhile it went full hot and I have left it there ever since -- BUT NOW I am losing heat sometimes, if I wiggle the knob it comes warm again and sometimes stays warm but sometimes gets cool even though knob stays static. I AM THINKING IT IS A DIRTY POTENTIOMETER behind that knob, I WONDER HOW TO ACCESS THIS CONTROL SO I CAN TRY TO CLEAN IT? I do not think there is any problem (yet) with any of the other controls for the AC/heater system. Or, is this control vacuum operated? How do I remove that knob without breaking anything? I wish I could just spray some contact cleaner in there and fix it; if I knew how to access it, I could see if I can clean it. THANKS for your reply!! - Uncle Mark