Potterton Neataheat Electronic

[Dennis Priddy]

Please help me to understand what is wrong with this Potterton Neataheat Electronic boiler.
Everything functions as it should but the burners shut down for long periods when they should be full on resulting in luke warm system. It also cycles the burner rail on and off at times.

It feeds a conventional heating & hot water system with two separate room thermostats and an electronic control system that appears to be working fine. The boiler control seems to be the problem. Descaling of the system has been done and the fan works okay but it's just a little noisy.

What part of the boiler control system should I be looking to replace/adjust?

 

[ollski]

Could well be the boiler thermostat....make any difference when you turn it up full?

 

[Dennis Priddy]

It doesn't make any difference whether it is set on 2 or 5, it still behaves the same.

 

[ollski]

If it's the same for heating and hot water replace the boiler stat.

 

[Dennis Priddy]

Thanks for the advice. I'll try that. The boiler stat doesn't seem to make much difference at all. Even with the hot water tank at 64 degrees and the stat set to 1, it just keeps on burning. At other times with the stat set high, it fails to light for ages.