JLWM1407 – Door lock clicking repeatedly

Hi whitegoods forum,

My John Lewis washing machine has started to misbehave: when I turn on the washing machine with the door closed I hear a repeated clicking sound from the door locking mechanism. It seems to be locking and unlocking the door repeatedly. I cannot start any cycles as they result in the same repeated lock – unlock pattern.
This problem began intermittently – I was able to successfully carry out a wash cycle, but a would run in to this problem when trying to run an extra spin cycle. Leaving the machine overnight usually fixed things. I bought a replacement door locking mechanism in case the problem got worse, having been pointed to a compatible one by this site. Recently I’ve found that the problem no longer resolves itself, so decided to fit the replacement locking mechanism, which went fine, but I’m still having the same issue: lock – unlock cycles.

Does anyone have any suggestions for what the issue could be?

Is there a way of reseting the PCB on the machine, in case some error code has been stored and can’t be cleared?

Things I’ve tried:
– powering the machine off at the plug for 30 minutes
– turning the machine on and off with the door open / closed
– clearing the filter and draining out any additional water
– replacing the interlock mechanism

Thanks for your help!

Jonathan