Also, did you run the hardware output diagnostics test? Since you have the integrated (badge) controllers, you will have to check the binary encoding readback and translate using the chart in the service manual? Do you have the manual? Search the downloads section at the top of the homepage here or request it in the service manuals request section.
I have run the all the tests (incl. element, with water in the tub), none of them generate the same clicking/beeping. The closest similar sound is when running the rinse aid dispenser, but that's slower and the motor/valve-click louder than the noise generated when the issue occurs.
Running these tests first is the best approach.
Agreed, sadly none cause the problem issue.
You can also run a single 5 minute test cycle or a continuous cycle test (good for intermittent issues). These will test the lid motors, fill valve, wash motor, element, and drain motor. The other components (all actually) can be checked for voltage and resistance with a DVOM.
The 5 minute cycle runs without issue, as does a standard rinse program. I have run delicates, quick and regular wash and all three cause this to occur, I haven't run a heavy wash but I expect a similar issue.
Also, can you provide the full part number of the power filter board you installed please? And any voltage/current specs (non-US) that may have come with the part. And what is the voltage reading at the power outlet that feeds the unit?
I believe it's 525958MP. I'm in the UK, 230-240v mains, if that was the detail you were after? If you need something more or different then I'm going to have to pull the drawer out again and I'd prefer to avoid that for the short term. I was hoping that it wouldn't be this as the top runs successfully, and that top drawer also ran successfully on the bottom earlier. I appreciate the art of diagnosis often points the finger at the unsuspected, but if I can hold off pulling the drawer until I have to then I'd appreciate that
Can you pinpoint that the clicking/ beeping noise is centralized at the electronic controller only, or possibly at different components situated close together?
The beep noise from the controller is similar in volume and frequency to the "squeal" that occurs when the fill motor runs. Quiet, high-pitched, very definitely from the controller, most probably from the piezo speaker but could be from another component, the upper drawer emits similar tones at similar times. The clicking appears to be, if not all, then multiple valves/pumps on the front of the drawer (detergent diverter, rinse aid, brine pump, etc.). Pinpointing exactly which may be a challenge.
It appears to start part-way into the program, after the fill is complete, maybe when it starts its main wash cycle (the wash cycle continues for a reasonable period, maybe 10-15 minutes, then ceases, leaving nothing but the click/beep). I'm afraid to leave it doing that for too long in case this is damaging.
As for the challenge comment... I aim to please, this may prove interesting.
Then this indicates that the integrated badge isolator (now in bottom position) is defective.
Did you run the diagnostics tests as stated above? Did you get the service manual?
Sorry, I'd failed to hit Post earlier today :/
Yes, I have the service manual.
Is the isolator the box that sits between the controller and the badge? And if it is, how do you propose it would have this effect and only at particular parts of the cycle?