Trane xl (home) condensor does not always run in heat

Glen,

Come on and call out a retail A/C contractor before you do any damage to your A/C.

First shut down your unit at the thermostat or breaker and call someone now.

Moe,

The thing is the unit is relatively new, 2 years. It is a 4 ton system paired with a trane furnace. The other thing is after 5:30 last night it came on fine. It runs as long as I want after the temperature outside drops. What kind of problem could this be? I would call a contractor but I want to get an idea of what type of issue could cause this. It runs FINE after it is < 90 degrees, approximatly, outside.

glen

If its only 2 years old, then its probably still under warranty...unless you screwed with it, then all bets are off.

It could be anything but I would advise you to shut it down until the A/C technician can check it out.

The reason for shutting it down is to not cause any further damage to your system and when the tech comes out and finds the compressor hot and off on internal overload it makes his or her job harder which cost you more money.

I had a cat like that once. I changed the spayed connectors, and fixed the problem.