Britony Combi Se boiler 40 & 80 lights flashing?
Have I got got a faulty programmer?
Vaillant ecotec 831 plus?
BMU error code?
Greenstar 24Ri boiler, fast flashing - can I reset?
Power but not activating Baxi 105e boiler?
Greenstar Highflow 440?
Fan tries to run every 15 seconds then stops immediately?
Remove boiler cover?