New unit just quit no compressor, no fan, breaker not trip, blower unit working fine

COMPRESSORS DO NOT DO THE REVERSE CYCLE THING YOU NEED TO CALL A REPAIR SERVICE

This appears to be a direct short internally to the compressor . you neede a ohm meter to test it .. not certain how old the unit is but if its a window unit and over 6 years old I would buy a new one. But it does no0t sound good. In the future when a unit trips the breaker and you reset it and it trips right away its best not to trip it again as it contaminate the inside of thye system and is very difficult to clean and expensive as well . those are my thoughts. It could be the outside fan but the way you decribe it tripping right away my money is on the compressor

Hello You have a 3 ton unit with a 10 SEER rating.this unit should NEVER be on a 50 amp breaker.The breaker size is on the model plate/sticker....any way the compressor is shot and it is time to find a new 3 ton condensing unit.espescially if it is TRIPPING a 50 amp.Good luck

you have a 'direct short' - most likely the compressor or fan motor.
you could isolate it to one or the other by (be sure all power is off) disconnecting one of them and turning the unit back on.
For example if the fan motor is shorted and you disconnect it - the breaker will hold and not trip and the compressor will come on - which will tell you that you need to replace the fan motor.
If you do this and it still trips the breaker then reconnect the fan motor and disconnect the compressor and try that.
If the breaker holds and the fan motor runs then you know the compressor is shorted.
Note: the fan motor can be replaced with not a lot of trouble depending on how mechanically inclined you are - but the compressor will take a qualified serviceperson.

Hi, if this unit is tripping the breaker when it tries to start, you have a part such as the compressor or a fan motor that is shorted. I would say it is the compressor as it draws more amp's then the other parts and if it has a locked rotor, it can draw as much as 55 to 70 amps depending on the size of the compressor. If you are inclined to check this out your self, it is a process of elimination. You will need to leave the breaker tripped off and disconnect the 3- leads from the compressor and tape the ends up. Now, hit the breaker. If it holds, you will know that the compressor is the faulty part. I bet this is as far as you will need to go. Depending on the condition and age of the unit, you will need to get estimates for a compressor change out or a new condenser. If the compressor is disconnected and the breaker still trips, go to each motor, the blower, and condenser motor and do one at a time to see which one is faulty if the breaker holds when disconnecting.
Please write down how the wires go back and don't forget to rate me on this as I know you will be kind. I will check in on you and keep all of your problems on file to go back to if need be. Keep me posted on what you find.
Sincerely,
Shastalaker7
A/C, Heating, & Refrigeration Contractor

High amp draw can be caused by a few different things, so first check that incoming voltage to trailer is sufficient. (115 volts) Not unusual for some parks to install more hydro hook-ups on a feed line, and when all are up and running, your incoming voltage could be decreased. If your o.k. that way, then I'd start looking at the compressor circuit of your ac, in particular, the compressor start-up capacitor. The capacitor basically stores electricity and boosts it to higher voltage for compressor and fan start-ups to reduce current draw that will trip the breaker. Please have a knowledgeable electrician, or RV tech check this for you, as a capacitor can give a real good high voltage (possible fatal) shock, even when power is off to unit. I also suspect that the start relay has shorted (welded) itself due to high amp draw situation, and that is reason it comes on by itself.

When AC unit trips the breaker it usually means one of four possiblities.

1) the AC unit is causing the breaker to trip, i.e. a shorted fan motor, compressor, or some other electrical component - in which case you will probably need to have a repairman look at it.

2) you've plugged the unit into a outlet that is connected to a breaker which is too small to handle the load the AC unit is putting on it.

3) a defective breaker (not likely but possible)

4) just a 'random' trip and if you reset the breaker it might work fine.

good luck!

sounds like fan motor is going bad - replace

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])