boiler problems

[irons]

Hi can anyone help. I have a valliant eco plus boiler that does not heat the radiators,the pilot keeps kicking in then goes out after a few seconds. The hot water is fine, just the heating not working

 

[Agile]

For safety reasons your boiler is not suitable for DIY repairs.

Apart from checking external controls there is prbably little that you will be able to do.

Tony

 

[plumbingservices]

Is there a fault code showing? sounds like it`s stuck in hot water only mode. or pcb fault

 

[Dan Robinson]

Would like more information about the boiler status before making wild guesses.

 

[irons]

There's no fault code on the display panel

 

[Dan Robinson]

S codes. Not fault codes. They tell you what the boiler thinks it is doing.

Press the I button.

 

[irons]

Hi, I've pressed the I and - button and it says f22, which says dry fire, low water pressure or faulty or dirty pump with low output, the pump has been cleaned and checked, the water pressure is ok, could it have anything to do with the thermostat in the boiler?

 

[Dan Robinson]

Where are you determining the system pressure?

 

[irons]

On the pressure gauge on the boiler, he has also checked the pressure on the vessel tank.

 

[Dan Robinson]

Pressure guage on the boiler doesn't feed back to the software.


Did he drop the system pressure before checking the vessel pressure?


Could be pressure sensor, pump, or expansion vessel. Lord knows what plumbingservices will come up with

 

[irons]

The fault code was not on display,I had to go to the history by pressing, I and - at the same time,and that shows the last 10 faults with the boiler, I've been told that its got to be the pcb if all other checks has been done, Thanks for your advice anyhow👍