Sounds to me like you are using a heating thermostat. What you want is a cooling thermostat.

PC :smokin:
PharmaCan Reviewed by PharmaCan on . help wiring fan thermostat. hi all. first time poster long time reader. i just recently purchesed a line voltage thermostat to kill my fan @ night, because the temps are getting low. the thermostat is simply a black box with a knob with numbers around it wich is the temps. there are two wires comeing out of it, a blue and black. what i did was cut open a extenison cord and wire it in-line. cut the blk wire(hot) in half and wired the blue wire off the thermostat on to the blk wire going to the plug, then the black wire off Rating: 5