Observation:
Tests indicate the integral fuse on the PCB has blown. This may have been due to fatigue on the component or a short within the PCB, however, it is often caused by a short circuit from a faulty component or water leak within the appliance.
Inspect the boiler for any signs of water leaks, also check all components and harnesses for any short circuits or signs of damage.
If any additional faults are identified they must be rectified before the PCB is replaced.
