Potterton Promax HE - Problem firing

[scottc2008]

Hi,

I have a Potterton Promax HE combi boiler, which is about 3 years old.

Recently i have had a problem where it is not firing up in line with the timer. Basically all the timing settings are correct. For example, set to come on at 5.30am and go off at 9.00am but it just does not fire up and i have to press the reset button for it to fire up.

This then works but it only stays on for about 1 hour and then just goes off. Then if i press the reset button again it fires up.

I have attempted to bleed the radiators but they are all fine and no air in the system and the pressure all appears ok on the gauge.

Has anybody got any ideas what the problem might be?

Any help would be greatly appreciated.

Thanks in advance.

Scott

 

[gas4you]

Do you mean the reset on the boiler or the programmer?

 

[scottc2008]

Hi Dave,

I mean the boiler, this is not my boiler but the reset button you can see in this image:

Thanks

Scott