DIY Doctor UK DIY Forums

Hi,
I have a Baxi Duo-tec 24 boiler. I have hot water and occasionally heating. I've reset the boiler, checked the pressure, turn it on and off, I've used the override button on the wireless thermostat, most the time this doesn't work but a few times it has activated the boiler. Does anyone have any idea what this could be? Any help will be greatly appreciated.

Help, I have a Baxi Duo Tec, 5 years old. Hot water is fine, heating stays on for an hour or two and then goes off. Switch off boiler for 1/2 hour then back on and heating works for another hour or two before shutting down again No alarm codes displayed. Thermostats changed in the heating circuit. Any help appreciated