Potterton profile problems

[DIY Bob]

I have a Potterton Profile 100e boiler that has started giving trouble. It's a fully pumped system.

We went on holiday for 3 weeks, so I turned the boiler thermostat down low and set the programmer for one hour a day, just to keep it ticking over. When we got back, I reset the programmer and turned the stat back up. Next morning woke up to a luke warm shower.

When the boiler came on, it ignited for a few seconds and then went out. It kept doing this same cycle, igniting for a few seconds and then off for ages, without really heating the water. After fiddling around with it, it eventually came on and has worked fine for 5 days, but this morning the same problem has returned, on for a few seconds, off for ages.

Any ideas what might be the problem before I call in an engineer? Boiler or pump?

 

[DIY Bob]

The Engineer called and it's working OK now. (No gas advice on the open forum). Hope this is helpful to any of you who come across a similar problem on your rounds.

 

[Howsie]

Glad you got it sorted and took the right route, calling a GSR engineer. I'd imagine the solution will be blotted out just in case, the not so sensible, read this and attempt to fix it themselves.

 

[Rickster123]

I love a happy ending..