Unloader valve:Your problem may be due to the air compressor’s unloader valve. You can test this by opening the tank drain and allowing the air to escape to simulate its function and remove water. To test the valve, close the drain and power up the compressor. Replace the valve if the...
Solution: Replace the solenoid unloader coil or repair the relay contacts. (3) Bridge rectifier wire off or damaged Check method: hold down the button, check whether the electromagnetic unloading valve light is bright, such as not bright insurance also can not be opened, it is judged that the...