This boiler was installed in 2019 and was working perfectly until two weeks ago. I cleaned the central heating system and topped up the boiler. The boiler is in the upstairs bathroom, which is the highest point of the system. When there is a demand for DHW, the temperature goes to 99°C but the DHW is lukewarm. As soon as I switched on the central heating, all the heat inside the boiler transferred to the radiators, and the bathroom radiator — which is very close to the boiler — became very hot. Then the DHW started working again for two days and went back again to lukewarm. any idea? is it airlock in the system or something more serious? there is no error code
Also, how can I increase the pressure to more than 1 bar? The boiler has a keyless filling loop, and no matter how long I hold it open, it does not go above 1 bar.
Also, how can I increase the pressure to more than 1 bar? The boiler has a keyless filling loop, and no matter how long I hold it open, it does not go above 1 bar.
Last edited:
