Why is my central heating working but 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.

Can a thermostat cause no hot water?

#1 – Thermostat/timer fault A thermostat issue would only cause an issue with heating, rather than hot water. But if your thermostat is also acting as a timer, a fault with it might cause your boiler to shut off entirely, also starving you of hot water and plunging you back into an age so dark you feel blindfolded.

How do I reset my hot water boiler?

Follow these simple instructions to reset your boiler:

Refer to your boiler manual.
Push the reset button for 10 seconds.
Wait 2 – 3 minutes, the boiler should fire up.
Repeat twice if the first attempt fails.
If the boiler still fails to fire up on the third attempt, double check the gas supply.

Why is my Isar he24-l9 not overheating?

I refilled the system bled the radiators and the pump, the central heating was working when switched on, also diverter valve actuator moving and displaying a ‘d’. After a while switched heating off, hot water was working a for a little while then it would go luke warm then the boiler wouldn’t fire up.

What’s the fault code on the ideal Isar he24?

Since yesterday though the boiler has gone into the L-F fault code. If i press reset, the boiler starts up and although it’s slower and seems to be louder, it eventually goes from a sequence of D, 1, 2 to 0 and works okay for a bit with hot water, but then goes back to the L-F error code. 1.

What should I do if my Isar boiler does not relight?

My Ideal Isar boiler has a L : A flashing on my boiler, what can I do? Press reset button (D) for 2 seconds then the boiler should relight. If the boiler doesn’t relight then this could be due to your overheating conponents being at fault. You will need to contact a Gas Safe engineer to attend to the boiler problem.

How old is ideal Isar central heating system?

Discussion in ‘ Plumbing and Central Heating ‘ started by ripperuk, 20 Aug 2012 . I have a 4 year old ideal isar HE24 which has had a lot of problems.