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[Stealthmode]

   Ok, so my Lennox air conditioner is acting up in the house. I turned it on a week ago and no temp change occured, although it was running. Turned it off for 3 days, then turned it on and it worked good for a day and a half. Now it's running, but the temp is slowly rising, no cold air coming out. small trace of water coming from under the unit, but no water coming out of the drain down tube (or whatever it's called that goes into the floor drain).

  Need to know what to check.

[Joseph Davis]

Maybe frozen up.  Pull the cover, look at everything blankly, log back in for more snide and unhelpful commentary, break down and call someone who knows what's going on.

Oh, yeah, don't trust anything Conceptz-X has to say.

[patsmx5]

Capacitor on the compressor on the outside unit is bad. Get a new one and buy the "one with the big kick" to add to it while you're getting a new cap to replace the dead one. They only last 1-2 years at the most thanks to epa regulations these days.

[CSaddict]

Capacitor on the compressor on the outside unit is bad. Get a new one and buy the "one with the big kick" to add to it while you're getting a new cap to replace the dead one. They only last 1-2 years at the most thanks to epa regulations these days.

There is no reason to believe the cap is the problem. First off Steve, figure out if the compressor is actually running. If it is then feel the suction line. It should be cool. If it is and its working and them eventually stops pull the front cover and see if the evap is frozen. If its frozen then you may be low on gas or you could have a dirty coil.

You should also feel the thermostat click as you turn it up and down if its not a solid state unit.

The first thing you do when you go to put your A/C on for the summer is clean the condensor and the evaporator. If the evap is dirty it can't move enough air across it and it will freeze. If the condensor is dirty it will run high head pressure and that is proportionate to the evap coil pressure. High evap pressure mean its not going to cool.

If the compressor just hmms a sec and then locks out and doesn't run, then it may need a start cap. You can take it off and test it with a sweep meter. Make sure you discharge it first by putting a screw driver across the blades. Then take the meter on ohms and go across the terminals. The meter should flash. It will only work once in one direction. Then is its good put it back in. Get a piece of wood and a mallet. Put the piece of wood against it and fire it up. As you turn it on smack the wood with the mallet. It may bump it over. If it just hmms and doesn't move then you can try Patsmxs trick with a larger uf cap.

[Ntrain2k]

Sounds like a pressure switch might be going bad.

[patsmx5]

Capacitor on the compressor on the outside unit is bad. Get a new one and buy the "one with the big kick" to add to it while you're getting a new cap to replace the dead one. They only last 1-2 years at the most thanks to epa regulations these days.

There is no reason to believe the cap is the problem. First off Steve, figure out if the compressor is actually running. If it is then feel the suction line. It should be cool. If it is and its working and them eventually stops pull the front cover and see if the evap is frozen. If its frozen then you may be low on gas or you could have a dirty coil.

You should also feel the thermostat click as you turn it up and down if its not a solid state unit.

The first thing you do when you go to put your A/C on for the summer is clean the condensor and the evaporator. If the evap is dirty it can't move enough air across it and it will freeze. If the condensor is dirty it will run high head pressure and that is proportionate to the evap coil pressure. High evap pressure mean its not going to cool.

If the compressor just hmms a sec and then locks out and doesn't run, then it may need a start cap. You can take it off and test it with a sweep meter. Make sure you discharge it first by putting a screw driver across the blades. Then take the meter on ohms and go across the terminals. The meter should flash. It will only work once in one direction. Then is its good put it back in. Get a piece of wood and a mallet. Put the piece of wood against it and fire it up. As you turn it on smack the wood with the mallet. It may bump it over. If it just hmms and doesn't move then you can try Patsmxs trick with a larger uf cap.

I wouldn't go so far to say that there is no reason to believe the capacitor is the problem.

By what he said, sometimes it starts, sometimes it don't. Tell tale signs of a bad starting capacitor.

Nothing wrong with keeping the coils clean though.