vaillant 418

Hi, my heating which uses a Vaillant ecotec plus 418 boiler installed on an open vented central heating system using S plan has stopped working. The problem is the boiler is not firing up. The boiler status shows S30, which means there is no external demand for heat. I checked the SL to the...

Hi all, I have got a new Vaillant EcoTec 418 installed recently and noticed that the set hot water temperature is being ignored, instead it gets generated by flow temperature. Also diagnostics menu says that DHW hours are 0. Could this be a result of an incorrect wiring? I'd like to set DHW...

Hi, I have a Vaillant 418 boiler in a vented system with a hot water cylinder. There are two motorised valves. One is governed by a timer. If within the set time the water temperature falls below a set limit, the valve is activated by a thermostat in the cylinder. The other valve is governed by...

Hi I have moved to a different home which has Vaillant Echo tech plus 418 boiler installed with open vented cylinder and a central heating system. The thermostat on the cylinder is set to 60C and the boiler has two radial dials in front to control the flow temperature, both of which are set to...