We have a heat pump/air handler system in our condo. Our probelm is when we set the T-Stat at 68 the fan is not going off when it reaches temp. It will stay on forever (we tested it). The Heat pump will shut down, but the fan remains on.
Now the wierd part. If we manually reset the temp on the T-Stat to 65, the fan will go off as long as the temp is above 65.
Is the T-Stats temp sensor going? I think the fan relay is working and the heat pump and fan seem to work as well.
Should I replace the T-Stat?