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hey , sorry for the late reply.i found out the problem , it was a small cut in the ground trace of the PCB , i fixed it, but now the circuit is acting weird , as it turns on the pump as soon as the water goes below the upper level. and then, the pump protect seems not to work and infact the circuit only works only when they are out of water. Its confusing ! please help :)
First I tried using a aluminium strip , but the circuit dint work , so i used a metal Screw as i had tested with metal screws in the bucket, i have posted the pictures of them all , the black and blue wires are the ground , green is the lower level and the red one is the upper level , and the blue one is the pump protect. (dont worry the pump protect and the ground wires are submerged in the underground tank.) and the other wires are as shown in the picture. Any Help Would Be Appreciated . :) thanks