Why is my boiler on but no hot water?

This is is a valve that opens and closes to provide heat to the radiators or to heat your water. If your heating is working but you have heating but no hot water or vice versa, it is likely to have become stuck. You will need to contact a Gas Safe engineer to solve a problem with your diverter valve.

Why is my hot water timer not working?

There are a few reasons your timer clock may have stopped working. The clock resetting due to the power being out for a while (especially if you have an older boiler) A blown-out fuse. Your room thermostat settings telling the boiler not to come on.

Is the Vaillant pro 28 producing hot water but no heat?

Discuss Vaillant Eco Tec Pro 28 – Hot Water but No heat in the Central Heating Forum area at PlumbersForums.net Not open for further replies. Hi all! I have an EcoTec Pro 28, it’s producing hot water just fine but no central heating. The wireless thermostat (British Gas RCPlus/Drayton Digistat) is calling for heat, the boiler doesn’t seem to react.

Can a Vaillant boiler be used for central heating?

Discussion in ‘ Plumbing and Central Heating ‘ started by Highflyer380, 11 Oct 2019 . I have a Vaillant EcoTec Plus 630 boiler with a Heatrae Sadia CL250S28 Megaflo. The boiler is working for the underfloor heating and the central heating, but is not heating the hot water.

Is it illegal to remove front cover of Vaillant boiler?

The best solution my friend is to get another engineer in who is more confident with Vaillant. Sadly by removing the front cover of the boiler you break a combustion seal which is protecting you and your family from any nasty fumes the boiler may kick out. Hence It is illegal for you to remove it unless you are Gas Safe.

Is the Megaflo boiler heating the hot water?

The boiler is working for the underfloor heating and the central heating, but is not heating the hot water. The motorised valve for the hot water on the megaflo is open, and the overheat reset on the tank is ok, but there doesn’t appear to be a demand for the boiler to fire up coming from the hot water system!