sunvic 207xls controller infrequently loses its settings

[pauldgraham]

Hi guys, hoping someone can help. I fitted a sunvic 207xls controller a couple of months ago and it worked fine for about a month, but recently about once a week, it appears to lose all its programme settings (except the date and time) - get a big "2 Pu" on the display, and then it continuously cycles through flashing each of the days of the week in the upper edge of the display.

The controller's programmed in 2PU mode, but I can't figure out what's causing it to lose its settings? Seems to happen about once a week with no obvious correlation between occurrences. Interestingly, having been on holiday for the previous week, I had turned the boiler down and the controller was fine when we got back, but now having turned the boiler up, it's since lost its settings again - could it somehow be a temperature-related problem?

Any advice on what might be causing the above/ how to fix much appreciated.

 

[aggis]

Hi, take it back to your suppliers & get it changed, got to be afaulty unit.

 

[pauldgraham]

Many thanks - I was thinking that might be the case. Hopefully B and Q will swap it even though I haven't got the receipt.