Worcester Bosch 280 rsf hot water fault

[stockcar432]

Good evening folks,

I'm after some guidance if anyone can help me please?

My Worcester Bosch 280RSF combi boiler has developed a fault, if you run the hot water for any length of time after a period of about 2-3 mins the boiler trips out and the burner extinguishes, the water then cools and the burner re-fires and hot water returns.

Has anyone got any ideas as to what may be causing this and if it is possible to repair?

Thank you for your help.

Stockcar

 

[Dan Robinson]

Will be the HW exchanger clogged probably.

 

[stockcar432]

Thanks Dan.

I know where the heat exchanger is in the boiler is it something that is worth taking off and cleaning out or is it better to replace?

 

[Dan Robinson]

Probably worth trying to clean.


It is the water water exchanger in the bottom of the boiler - not the one in the combustion chamber.

Consider cleaning the whole system too.

Ready for a new boiler when the time comes.

 

[stockcar432]

I know the one you mean, I'll have a look and get it out and give it a good clean out.

Sorry for all the questions but is it worth putting a cleaning product in the CH system and running for a while, draining down and then refilling?

Or should I just remove and give a it a clean out that way?

 

[Dan Robinson]

Flush the system clean with it in.

Then remove it and clean it directly.

Then put it back on and fit a Magnaclean to the return to the boiler.

 

[stockcar432]

Excellent, many thanks for you help.

You are right, time for a new boiler but that can wait until the kitchen gets blitzed...

Will try to keep it going for the short term, crosses fingers!