Yes I'm back! hehe.
AO Silver Member
Join Date: Feb 2009
Location: South Africa
Mine used to do this when it kept loosing the calibration settings.
Check the Pump relay, I had issues with one that would work while cold but, once it had been running for a little while it got hot and stopped working. The 2 issues seemed connected to a degree, after I sorted the relay the box stopped needing to be re-calibrated all the time. Then later I found the heating issue after that was solved it was fine.