We have a 1995 Playmor Sport toybox 5th wheel with one Coleman air-conditioning. The thermostat has the following settings on the left, top down: Heat, Cool, Off, Fan. And on the right side from the top down: Fan Auto High, Fan Auto Low, Fan Manual Low, Fan Manual High. The fan does not come on when it is on the COOL Auto Low or High setting. It only hums a little, but the fan does not kick in. Then when I put it on COOL, LOW FAN, the air conditioner works. We have tried just about everything, even had an air-conditioning person here but can not figure out the problem. Nothing has been rewired in years, so this can not be the problem either.
Any tips would be greatly appreciated. Thank you so much. Daniella