A/C worked fine last year. Turned it on for the first time this year and the outside unit does not come on. The inside unit fan works just fine. I checked the circut breaker and turned on and off. No change. I revoved the cover and do not see any burnt wires or any problem. Not sure what to do next. I have a meter... what should the voltage be where the power comes into the unit at L1 ect. please help... thx

there are 3 things to be considered,first,if the compressor motor `s connectors are having loose,it gives a hi ampere to your RELAY that can cause to its contacts being fried,second,the compressor motor itself is gaining a hi ampere already i.e. having unusual sound that can cause heavy friction inside the turning mechanism and third the last but not the least,maybe this time,the tubes or the compressor itself having very small holes that causes to the refrigerant to escape and it doesn`t gives off cold air.

the thermostat is powered by the unit or batteries if batteries they may be dead if the unit you need to check fuses outside at unit or reset breaker outside depending on age of installation

I have a JVM1850 White microwave-over the oven-installed 3 years ago. Last evening the unit would not turn off. The inside light and fan continued to run, however, the microwave was not working.

All the controls and functions seem to operate, but when completed, the unit remained working, as stated above, with the door opened or closed.

Hello
Check for any blown fuses at the outside unit.Replace if needed.

If this does not help it is possible your t stat is bad.

If the induction motor ain't going I would look for a blown 3 amp (purple) fuse on the control board. If that was good I would check if any of the roll out switches were tripped. If a rollout switch was tripped check or air restrictions somewhere.

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The condenser fan (outside) cycles with the compressor.

I believe the soft hum you are hearing is the contactor pulling in. You can check by standing by the outdoor unit and have someone inside turn the a/c on and off at the thermostat. If the contactor is being energized you will hear a distinctive click as it energizes or de-energizes. If this happens check your main power sources to the condenser. Make sure the circuit breaker in the fuse box is turned on. Also check your outside disconnect box that connects to the condenser. Remember this is high voltage so be careful. A lot of these disconnect boxes have cartridge fuses inside of it. You will need a voltmeter to check the continuity of the fuses to make sure they are ok. Just one being bad could make the condenser inoperative. If you need to change the cartridge fuses, make sure you put in the exact size needed. putting in the wrong size for you unit can cause problems. Always buy "time delay" fuses . They cost more but they will not blow out on initial start up like the cheap ones will. I hope this info helps you....
Good luck...

If the unit is working fine in heat mode and in fan only mode, you have a short in the wiring going to the ouside unit. If it were a fan relay, then everytime the fan came on the breaker would trip. But either way, there is a low voltage short taking place in the unit. If the compressor was bad, the indoor unit would run fine and would only blow the breakers to the ouside unit. I had a unit last summer that did the same exact thing. After I replaced the control wiring to the outside unit, everything worked like a charm. Good luck!

Hi wild 36.
I think the problem may be a bad run capacitor. If the outside unit is humming with no action, that may be it.

This could also cause the outside unit circuit breaker to trip.

Greg.

Whats the amp breaker? Is this for the inside unit or the outside condenser? If the inside and gas heat you have a bad fan motor, If its an electric furnace , the same, but if its the outside unit, the fan could be going bad, locking up and the compressor still runs and pulls high ampsand tripps breaker or the compressor is just pulling too many amps due to plugged coils with dirt , grass or weeds blocking airflow.([email protected])