JohnCurry555
Feb 3, 2010, 02:09 PM
Hi everybody. Got a hopefully small problem with my heat at home, and I'm hoping somebody can give me a hand.
My thermostat is a Trane XR401, connected up to a Trane outdoor unit, and both were new and professionally installed last April. The heat and A/C both work fine.
However, this winter the fan has occasionally switched on (even though it's turned off), and it'll blow some super cold air around the house. For example, say the thermostat's set at 65 overnight. It'll keep it there until I wake up and put it to 70 or so, and it will heat the house fine to 70. So, the internal temp reads 70 on the thermostat, and the system shuts off. All groovy. But then, 20 minutes later, the fan will turn on (even though it doesn't read fan "on" on the display) and blow some cold air around, until eventually the heat will kick back in to bring the temp back up.
My thermostat only offers fan ON and fan OFF, no fan AUTO. So, any ideas what's going on? Thanks for any and all help!
My thermostat is a Trane XR401, connected up to a Trane outdoor unit, and both were new and professionally installed last April. The heat and A/C both work fine.
However, this winter the fan has occasionally switched on (even though it's turned off), and it'll blow some super cold air around the house. For example, say the thermostat's set at 65 overnight. It'll keep it there until I wake up and put it to 70 or so, and it will heat the house fine to 70. So, the internal temp reads 70 on the thermostat, and the system shuts off. All groovy. But then, 20 minutes later, the fan will turn on (even though it doesn't read fan "on" on the display) and blow some cold air around, until eventually the heat will kick back in to bring the temp back up.
My thermostat only offers fan ON and fan OFF, no fan AUTO. So, any ideas what's going on? Thanks for any and all help!