Just bought a new home last fall and noticed that the AC fan was running constantly. Replaced the old thermostat with a programmable version. Didn't really use the air much after that but it has been working the heat pump all winter with no problems. Now we are starting to use the AC again and are running into the same issue. Fan kicks on with the condenser but will not turn off. I can hear the relays opening in the thermostat but the only way I can turn the fan off is by flipping the breakers off for about a minute. Then it seems to reset itself. Any suggestions?