I have a Santon Premier Plus PP210E un vented hot water cylinder in a flat that is only heated by electric. It Has 2 immersion heaters, top and a lower one. The lower one's Thermal cut out has tripped twice in 3 weeks. The immersion heater can be set to a maximum of 70 degrees and the thermal cut out should operate at 80 - 85 degrees. I am sure one of these must be faulty if it keeps tripping. I think it could be the combined thermostat & thermal cut out device the pushes on to the immersion heaters terminals but i could be wrong as the device takes its info from the immersion heater element. Any advice and help would be greatfully recieved.

Phil greenwood, January 2008

Your thermostat is likely burnt out - get down and have a look at the wiring connections to the thermostat - you'll likely see signs of scorching. (BE SURE TO DISCONNECT FROM MAINS BEFORE GOING ANYWHERE NEAR IT). If it's scorched 90% likely dead - remove and replace it (and re-wire as the wiring loom is also now likely to be burnt solid!)

Si, April 2010

I have excatly the same issue with mine.

Did you sort this one out? Would be grateful to know if so, and what the problem was.

Cheers

Chris Price, May 2008