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A little advice please. We have a cm-zone wireless thermostatic valve system coupled with a Vaillant EcoTec 837 Plus boiler. In the morning the only room calling for heat is our bedroom, the boiler quickly heats the rads up to the required temp and then cycles regularly between heating...

Have a problem with this newly fitted boiler - wonder if anyone has come across this before. It appears that terminal 4 (CH switch) has a permanent 240V feed and is causing the boiler to fire even when the thermostat is not calling for heat. We've disconnected the thermostat to eliminate...

We have a problem whereby on our garage where the roof felt overhangs into the gutter, when the wind picks up the felt flaps back and forth hitting against the gutter and making an absolute racket. How should I go about fixing this - am I OK to silicone the felt to the inside of the gutter...

Have recently had a CM-zone system installed (HR80s on the rads CM67z controllers) However when turning new zones on the boiler very often locks out with an A02 error. When starting up from cold we haven't had a problem, only when starting a new zone with another zone already running...

Please excuse my ignorance in all that follows...! I have the above boiler that is being rather temperamental. It has in the last couple of days failed to ignite and resulted in an A01 error. It can be "persuaded" to start up after a reset or two... A01 is defined as "Burner failed to...