He24 - removed rad now won't work at all

[DaveW]

Hi all, I removed a radiator downstairs to wallpaper when I put it back on the he24 will not fire up at all and shows an error code L9.
The pressure had dropped to 0 so I refilled the system. This happened when I removed a radiator before but last time I shut off all the rads except the one I had removed and fired the system while bleeding it which worked. Sadly this has not worked this time.
I am getting water from all of the rads when I bleed them.
The casing of the boiler does feel quite warm.
Help.

 

[ShaunCorbs]

Air lock close all the rads except the closest to the boiler upstairs and then turn the heating on will heat the pump working should move it

 

[Harvest Fields]

As above

 

[DaveW]

Tried this earlier but nothing was happening. When I tried to fire it up just got the L9 code again. Will give it another go now it has all cooled down.

 

[DaveW]

Just tried it again nothing happened except the display showed.
0.0
0.4
L9

 

[ShaunCorbs]

You sure you have pressure in the system eg around the 1-1.- bar

 

[DaveW]

Yes refilled from 0 to just over 1 bar. Scratching my head now.

 

[townfanjon]

Whats the boiler pal ?, isar ?

 

[DaveW]

Good old Isar He24.
We inherited it when we moved in last year. I have read how bad they are.

 

[townfanjon]

Good old Isar He24.
We inherited it when we moved in last year. I have read how bad they are.

Jesus wept , I am a bloody mindreader .
Its an overheat code , its air . Try lift the pressure up slightly.

 

[DaveW]

Is that by just filling the system a bit more. It is showing at just under 1.5bar.
Thanks

 

[DaveW]

Just raised it a bit and turned the system on. Still just showing the error code.

 

[Steve weightman]

Maybe an idea to isolate the gas to stop it firing up so not to overheat while it gets the air out . Had this a while ago dryfiring

 

[DaveW]

Is that best to just isolate it at the mains then?

 

[townfanjon]

Is that by just filling the system a bit more. It is showing at just under 1.5bar.
Thanks

Its a tricky one , the gauges arent the most accurate, I would try up to 1.8 ish , reset it and go again , it might be enough . If it works after its fired open a bleed screw and get it down to 1 bar ( cold)
Pain when this happens, but we can go into the boiler , sorry I cant tell you what to do unless one of the mods ok’s it .

 

[townfanjon]

Just raised it a bit and turned the system on. Still just showing the error code.

You are holding reset for a few secs aren’t you

 

[Harvest Fields]

If you cannot get it going. It has to be time to get an engineer in.

 

[DaveW]

Cheers. Really funny o e but there's no reset button on the control panel.

 

[DaveW]

You are holding reset for a few secs aren’t you

Can't even see a reset button on it.

 

[townfanjon]

Its a small one Inbetween the two dials , unless yours hasnt got one .

 

[Sharp Point]

I know exactly what the problem is, but I’m not allowed to tell


I know, I’m a tease

 

[DaveW]

Its a small one Inbetween the two dials , unless yours hasnt got one .

It's got a different dial. Just figured it out.

 

[DaveW]

After resetting it the boiler tried to fill itself and went off. By the time I got downstairs it had fired up and we now have hot water and heating.
Thanks for all your input guys really appreciate your help.

 

[DaveW]

I know exactly what the problem is, but I’m not allowed to tell


I know, I’m a tease

It was just the air in the system, I just didn't realise that one of the buttons doubled up as a reset button.

 

[Sharp Point]

It was just the air in the system, I just didn't realise that one of the buttons doubled up as a reset button.

Air in the boiler