Fitted a XV751000G2 Stat 3 weeks ago but it has failed again! The customer also had 2 fitted while u/g. Any ideas as to why they fail? there is no sign of overheating on the terminals and the water level looks fine. At £16 a pop I don’t want to be replacing them on a regular basis.
I think I have answered my own question on this on. After having a look at the stat it seems to be a One Shot device so going back to check water circulation.