baxi solo 3 boiler?

This can happen if there is no circulation of the water. If you have a three way zone valve it should be Ok, but if you have a couple of 2 way valves there can be a chance that when the water in the tank reaches temperature and shuts the valve there is no means of circulating the water through the boiler, which then goes into overheat

Malcolm
May 2007

Its the gas valve solenoid. Change the gas valve.

George
April 2007

hi there check the pump overun is working the pump should run for at least 4mins after heating or water has stopped calling.
if the pump is not running the heat build up of water stuck in the boiler will cause the overheat stat to operate

brod
April 2007