Boiler Problem

[Rubernees]

I hope someone out there can help......?
I have an Ideal m30100 boiler which has worked fine for the last 5 years but has now decided to stop supplying central heating....?
The boiler kicks in fine when demand for hot water is needed but will not heat the central heating system.
I have a seperate Digistat which controls the times and tempretures needed ect which seems to be working fine...? but not sure if the signal is, a: reaching the boiler or, b: the boiler is receiving the signal but the PCB is not working....?
Has anyone had a similar problem solved or does anyone know of an inherent fault with these boilers...?
Thanks
Alan. :

 

[gas4you]

Remove the bottom plate off the boiler and pull out the mains terminal block.

There is a switched live from the heating controls on L2.

Check this has 240VAC when a demand for heat is present.

 

[Rubernees]

Thanks for the reply... i have checked the power with an electrical screwdriver and L2 is definatley showing the power getting through...
I suppose this means it is not the digistat......?
Is there anything else to check out or is it a case that i need to replace the board.......?
Thanks Alan

 

[gas4you]

The only thing I can now suggest is the board.

Does it indicate 'c' on heating demand but not come on? or is the display still in standby, 'O' ?

 

[Rubernees]

Thanks .....
The boiler shows "o" not c....
Do you think the PCD is something a competent DIYer could replace...?
Or should i get a profesional in....?
Alan

 

[gas4you]

The pcb is easy to replace, just follow instructions and make sure you fit the jumpers in the correct position for your model boiler.

 

[Rubernees]

Hi Dave

Thanks for your invaluable advice...
I will let you know how its goes.
Hopefully not with a bang...
Alan