boiler
Jun 22, 2010, 05:18 AM
Fan runs even with the t-stat off
hvac1000
Jun 22, 2010, 02:19 PM
Burnt or stuck contacts in fan relay OR low voltage control wire shorted.
junkin
Jul 10, 2010, 01:51 PM
You may have the selector switch in the thermostat to on try it in auto!