YEU SHENG E209138 18 amp reset button keeps tripping

Is it shutting off because the breaker is tripping or because the pressure switch shuts it Off? If it's a breaker, is it part of the air compressor or a standard breaker in an electrical panel? If it's supposed to shut off at 150psi and this is occurring when the air compressor attempts to restart, it could have pressure trapped in the tubing between the compressor and the tank. It might be attempting to restart under a load. It will trip because it has to over come the back pressure on the pump. If it's triping at 150psi & not supposed to, it could be a weak breaker. You would need to know what amperage it's supposed to be pulling at 150psi and use a meter and amp clamp to see if the amps are more than what they are supposed to be.

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Place amp meter into circuit to determine amp draw at time of reset trip. If higher than 15 amps suspect leaking check valve or failing capacitor. If it trips at lower than 15 amps suspect weak reset breaker. Good luck

7 AMP MEAN CIRCIT WILL BE OPEN AT 7 AMP?

that reset is for the high pressure switch. this means your compressor is getting to hot which is then increasing the pressure and tripping the switch because the fan isn't running. usually if a capacitor is bad you can give the motor a "kick start " and the blade will then start turning. use a long stick or screwdriver to spin the blade but then you will know you need a cap. that switch is protecting your compressor, don't hold it down to keep it running.

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Its your reset button on the compressor that's bad! I have the exact same compressor (EC89) and it did the same thing! Compressor would run great for 15-20 seconds, then trip the reset button. I ordered a new reset button off e-bay, replaced it, and it works fine now. Good overall compressor! but has cheep china electronics installed. just replace the reset button and you will be good to go....cheep fix!!!

Could be loose wires at the compressor terminal.
But most likely a capacitor is going bad.
Replace the capacitor and maybe add a Hard Start Kit.

Several things to check. Amp draw to be within number on plate, if amp draw not correct check capacitor, should be within 5% of rating on cap.. If amp draw about right and cap reads good suspect faulty breaker. If amp draw high and cap. good check for leak at in-tank check valve. With pressure in tank remove hose at check valve spray soapy water. If check valve good, suspect reed valves leaking. If reeds are leaking the compressor will take longer than normal to fill and the discharge tube/air will get very hot. It is recommended to note the amount of time it takes to fill tank when unit is new and compare this as unit wears. Length of time to fill is an indication of how well unit is working. A combination of leaky valves and leaking fittings as well as leaking checkvalve will cause motor to overheat.

I'm assuming that you're pushing in the red button to reset it to restart the motor? Check to see what the air pressure is when the compressor shuts off. If it's higher that rated, then perhaps lowering the pressure will prevent the motor overload. If you have an amp meter, check the amp reading and compare it to the amp rating on the motor nameplate.

try running up this motor when its not installed on the compressor,, if it still blows the trips the motor is faulty,, if it runs ok, but hums when reconted to the compressor the compressor if far to tight for the motor to turn the compressor,,,you can not reset the points in a breaker trip they trip at a set curent if the motor is pulling more amps than the trip is set for it will trip the trip to turn off the curent, the motor will pull far more amps than it should if its over loaded thats why its humming its trying to spin up it but cant so it just keeps pulling more and more amps till the trip cuts out