worcester junior 28i (discontinued) wont keep running

[sam66]

Last year winter time, boiler central heating ran for 5 - 6 minutes then stops and flashing reset light comes on 1 flash per sec, repeated till eventually it ran continuously, next day same again.

Hot water supply seems ok but we have quick showers so who knows.

Replaced PCB and all seemed ok till this winter same again, does this mean I have to pay £124 a year for replacement PCB cards or is there another reason for the boiler stopping, any ideas out there?

 

[Dan Robinson]

With that level of information you're not going to get much help.

The fault code refers to a number of things half of which are RGI territory.

Why did you change the PCB the first time? Was it a parts slinger? Or were some quantifiable test carried out?

 

[sam66]

The RGI last year done a number of tests, said it wasn't fan or pressure switch and thought most likely was PCB so fitted a new one.

This seemed to work till the cold weather arrived a few weeks ago then the boiler started to shut down again, shutdowns are becoming more frequent.