from my point of view you cant rule it out till you have swopped it
although from experience it normally fails on the first fill you cant rule out the fluke factor ie its intermittent and just happens to get through the first fill also on the first fill the unit will be cold
Does this model even have such a device, had a quick look at the parts diagrams and couldn’t immediately identify one, although it was only a quick look. 🙂
That’s what I got but this is a longstanding customer of over 30 years and I am absolutely certain it was only last year I condemned his old machine???