Ariston EuroCombi A23 MFFI - Burner comes on then off immediately, then comes back on, when hot water is required.

[merton69]

Hello All.

Just recently, when I turn on the hot tap, the boiler fires up to heat the water but then goes out immediately, only for it to come back on a few seconds later.
The hot tap has been constantly running during this time.

Anyone have any suggestions in helping to cure this problem please?

 

[Elkato531]

Repairable? probably. Worth it? probably not. I'm guessing this boiler is 20+ years old and wasn't the highest quality when new.

 

[DP]

Repaired this boiler many times.
You need to be familiar with boiler operation and a multimeter else will be a difficult task.
Boiler manual is place to begin as is initial checks. Symptoms mean very little

 

[merton69]

Thank you for all your replies.

I drained the system and removed the heat exchanger and cleaned it out with SoS.

I also stopped the leak coming from the Pipe main flow positive and negative signal by repalcing the o rings.

So far, all is going brilliantly.

As for the comments about the machine itself, yes it is a good few years old but never had any problems with it apart from the usual aged parts.

It has been a brilliantly loyal system that has looked after my home for years. Long may this continue.