Why does my hot water heater not work when the boiler is on?

The hot water control panel lights up as if the hot water is on but the boiler doesn’t fire up unless heating is on and thermostat is set high enough to get boiler going. I’d start with the control valves – it sounds like the hot water valve is stuck open and only works when the central heating is on. Can’t find an answer? Ask a new question

What to do if your central heating is not working?

If you cannot get your hot water back on by changing your controls, timer and thermostat or by resetting the appliance, then you will have to contact a Gas Safe engineer to get it examined. Why is my central heating working but not the hot water?

Can a central heating system work with pumped hot water?

There will be an other. You may have gravity hot water and pumped heating, an older design but many still about. It seems as though your programmer may either be faulty or set to gravity only. Also a chance like the previous that you may have a faulty motorised valve.

What should the boiler pressure be when the heat is off?

Normally, when the heating is on, the boiler pressure is around 1.5-2 bar and around 1-1.5 when it’s off. Monitor the water pressure meter on the front of the boiler for any changes. If the pressure is higher than 2, your radiators might need bleeding or the pressure valve has come loose.

What does it mean when your boiler is working but no hot water?

One problem that can be particularly frustrating is when the heating is working but there is no hot water, or if there is hot water but the boiler is not heating your home. Read on to learn more about common causes for these problems and how to deal with them. 1. Check that you have electricity, gas and water

What should the pressure be on a gas hot water boiler?

Check the reading of the tridcator (combination pressure/ temperature gauge). If the water pressure is low (below 12 psi), the system needs to have water added. The boiler’s automatic filling system controlled by the pressure-reducing valve should maintain the proper water level at 12 to 15 psi.

Is it possible to get hot water from an oil fueled boiler?

There are several quick fixes that might get your water hot again. Oil-fueled boilers and heating systems are popular in areas where there isn’t ready access to natural gas.

What to do if your hot water heater is not working?

If there is no pressure-reducing valve, you can manually feed the boiler by opening up the water feed valve until the boiler pressure reaches 12 psi. Natural gas or propane control valve for burner is closed : Make sure the valve is open. Pilot light out or malfunctioning : Relight the standing pilot.