LG ThinQ FL washer pumping wash water out too soon

[spinspeed]

My LG washer which is less than 5 years old has started to pump the wash water out at about 15 minutes in to the wash cycle. The time indicator had 3 more hours to go to complete the cycle. It has done this on 2 occasions this morning. I was running the cotton cycle on 60C (140F). I ran the diagnostic app on my phone and it was OK except it had a note about over sudsing. There were no suds in the drum on either occasion.

There have been times in the past when the washer is completely full of suds (we use rainwater collected from the roof) and it just carries on as normal.

Any ideas?

 

[henene4]

That's a new one to me...

My first guess would be a problem with the pressure switch or the related control.
If the machine senses a water level that's to high that might trigger a drain. Same might be the case with sudsing.
There are many things LG machines somehow don't show error codes for.