I have a 4 year old Trane Air Handler and all of a sudden it stopped blowing heat through out the house. I have two thermostat one down stairs the other upstairs. I changed the filter; I checked the fuse and the breaker every thing is working. When I switched the thermostat to heat I can hear the air handler start working but after 2 minutes it stops running. The outside air blower does not even start at all. What should I do?

Thanks

Check your breaker or fuses for the outside unit, check the low voltage wiring out side to insure it is not broke (some times dogs chew on these wires)Good luck, Mike

I went outside to check the fuse and I coundn't find any fuse. Is the fuse inside the box or mounted on the wall? The is a breaker mounted on the wall and its on. Thanks