T
Tb28vegas
Just visited a boiler where ignition and gas were not being energised, fault finder shows replace APS, but having done that the fault remains. Fan starts when calling for heat, but no other action, boiler does not go into lockout, after 3 attempts just keeps trying and failing. No wiring loom issues apparent, just cannot see how replacing other parts will affect anything other than new PCB. Big cost with no fault diagnosis to go on.