I have a HP with back up propane heat. Propane is set to come on at 30 degrees. However, my outside thermostat is reading 5-6 degrees higher than actual temp. I have 3 outside digital thermometers (1 for each BR) which all read the same outside temp. I placed one of them beside my outside temp thermometer at the HP to validate the actual temp difference. As of right now, the outside HP temp is reading 46 and the digital thermometer right beside it is reading 40 degrees.
So, in order for my propane to come on, the actual outside temp would need to get to 24 degrees actual temp for the outside thermometer to think it is 30 degrees and send the signal to start my propane furnace.
Is there a way to calibrate the outside thermometer? I don't think it is. I have the Honeywell C7089U1006 outside thermometer. I know I can go in my inside thermostat and change the settings for the propane to come on a 35 which would probably work fine. I
So, in order for my propane to come on, the actual outside temp would need to get to 24 degrees actual temp for the outside thermometer to think it is 30 degrees and send the signal to start my propane furnace.
Is there a way to calibrate the outside thermometer? I don't think it is. I have the Honeywell C7089U1006 outside thermometer. I know I can go in my inside thermostat and change the settings for the propane to come on a 35 which would probably work fine. I