There are a few ways to tell if the water heater element in your washing machine might not be working and only one way to know for sure, I will go over some of the ways you can use to tell if your washing machine water heater element might not be working and also explain the 1 method you can use to to tell for sure if your element has developed a fault or not.
During ‘on’ time of spin direction timer IC2, the output of negative- edge triggerd JK flip-flop at pin 2 goes low to energise relay RL2 and washing machine motor rotates in one direction. During the off time of IC2, the output of N1 goes high again to de-energise relay RL1, which cuts off the mains supply to RL2 and the monitor stop rotating. Floating point trouble may occur at trigger pin 2 of IC1. Resister R8 over comes this problem by holding pin 2 high.