Panasonic H53 error message - Low voltage?

[webchap]

Hi there, I have a Panasonic Washing Machine, model NA-140VS4 and it keeps tripping the RCD and comes up with error code H53 which is -

Too low voltage input detected - Check mains electricity supply as this is caused by abnormal mains.

Have tried it in a different socket and also replaced the fuse so not sure what else it could be? Any ideas? Panasonic want £60 just to take a look at it. It's just over 5 years old and warranty expired. Already had new drum and door so wondering if to just get a new machine although rather fix it if I can.

Edited December 11, 2019 by webchap

[Whitegoodshelp]

Hello. You can't really troubleshoot tripping or fusing the electrics without a specialised insulation test meter. I think you've tried everything you can and would need an engineer.