Why is my central heating working but I have no hot water?
If your central heating is functioning perfectly but there is no hot water coming from your shower or taps, it is likely an issue with the diverter valve. Similarly, if you have a combi boiler and your central heating is not working but your hot water is working then it could be the same root problem.
What would cause my hot water to stop working?
No Power or Gas If an electric water heater is not producing hot water, it could be a simple problem like a blown fuse or tripped circuit breaker. Additionally, some electric water heaters have a circuit-style safety switch located near or on the thermostat.
Do you have central heating but no hot water?
My boiler is an ideal logic heat 15. I have hive active heating. When I turn the central heating on in the Hive app, the hive receiver calls for central heating and the boiler fires up. It is working correctly. When I turn the hot water on in the Hive app, the hive receiver calls for hot water but the boiler does not respond.
What to do if there is no hot water in Your House?
Close the hot tap, and the boiler will go back to heating your home. A fault diverter valve is very likely if you have a combi boiler and central heating but no hot water. This will have to be replaced by a qualified engineer.
Why is there no hot water in my boiler?
Combi boilers will typically prioritise the domestic hot water, so if someone opens a hot tap while your central heating is on, the diverter valve will react to that, and heat will be used to heat water for the taps instead of water for the radiators. Close the hot tap, and the boiler will go back to heating your home.
Why is my central heating system not working?
If your boiler seems to be working and your hot water supply is still functioning, but your central heating is not working, then the problem is either down to the settings on your boiler and central heating system or because a component of the boiler – almost certainly the motorised diverter valve – is broken.
Why does my central heating work but no hot water?
A relatively common fault with boilers sees the central heating work with no hot water. In some cases – such as with broken diverter valves – the hot water will only work when the central heating is fired up, whereas in other cases, the hot water will not work at all.
What does it mean when your boiler has no hot water?
If the heating is on, then there’s a good chance the fault lies with a valve that redirects the cycled water between the central heating and the hot water as it’s needed. It’s called a divertor valve, and it might have got stuck.
Why is my hot water not working in my shower?
Similarly, if you have a combi boiler and your central heating is not working but your hot water is working then it could be the same root problem. The diverter valve allows a combi boiler to switch between heating your radiators and your hot water, so when you turn on your hot tap, the diverter valve opens and sends hot water to the tap.
Do you need a power flush if you have no hot water?
You may also want to consider a power flush to improve the quality of your heating water and prevent blockages. Receiving heating but no hot water from your boiler is more likely with a conventional or system boiler that has a hot water cylinder.
