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Could be a Limit switch tripping out , check your air flow. Also furnace may need a good service cleaning . Hopefully this will help out ,or give you a starting place.

You need amp probe to make sure your compressor is on. Also it may be on but refrigerant may be so low charge, it runs but no cooling. Need to check the pressure while the system is running. This...

Not sure if you are talking about the low voltage wires (24v) , if you are red should come from transformer ,(R) term, then the Green wire should go to blower relay, White should be for your heater...

Hi there, May want to also check limit controls, That may be the safety control that is tripping out. Hopefully this will help you out .

Look it up on the internet. Or tell the color of the wires , and how many wires there are.

Is there good pressure on the cold water side ? If so some time when the plumbing system is worked on sediment will loosen up , and then can clog plumbing parts. Can not understand why the men that...

Yes If you have in shot burners , ( they are the short ones ) . The burners are bad, if you were to clean them that would not help. That is how they fail, one will light but not the others. This is...

It is not your pressure switch, that is the first safety control , that will bring on furnace . Not to sure if this is a in shot burner system ? Sounds like there is a temp limit tripping out . Do...

Any type of oil furnace needs to be serviced every year. Electrodes and nozzle needs to be clean and serviced. Should contact someone that has this type of experience. Sounds to me like there is a...

Sounds to me that your heater sequencer, may be stuck. Look inside the electric heater box , inside furnace , where all the wires go that hook up the heater. There is a sequencer relay that has 6 to...

Only thing I can tell you , is to get on line type in info of the thermostat, name, model number . Try to pull up , install instructions .

Need to find out if this is a heat pump system ? If not there is a chance you have a low voltage problem . Has any one changed the thermostat ;i.e. electric to a heat pump stat. Look inside the out...