Anyone ever worked on a water boiler “Heatrae Sadia Supreme 140”? it fills to half full, indication shows 1/2 full, then fills to full, full indicator comes on, then the on indicator flashes repeatedly & no boiling? Element checks o.k as do level probes, anyone shed any light on this, i don’t see too many of these!
try resetting the start- dry cut-out (green button) or the over-temperature cut out (red button) one of them usually does the trick if not replace them