Fix Fault Vaillant Ecotec 831 Plus

Following a F22 fault where we had no heating and only cold water from the hot water tap, I topped up the system, but went to far the needle went into the red. I bled the radiators to reduce the pres ... more

My gas ran out, I put some in an got the supply back on again, I tried to restart it but it won't so I opened the two valves to try an real ease pressure which I was shown to do before but it won't re ... more

just installed vaillant timeswitch (plug in 130). Timer is working (clock) but only calls for heat when switch is in "on" position. As soon as I switch to the position "clock", heating immediately go ... more