sime friendly boiler, again

[stumpy1]

can anyone shed some light on this problem, shower water gets hot, after short time boiler clicks off, then immediately clicks back on again, have changed two thermisters and diverter v/v is o.k. please help its driving me mad.

 

[Agile]

In spite of the name its not a very friendly boiler!

That symptom is usually the result of a blocked plate heat exchanger!

Tony

 

[stumpy1]

thanks tony whats best way to flush out?

 

[Agile]

The "best" way is to fit a new one!

Tony

 

[stumpy1]

thanks tony good old sime strikes again more expense

 

[Agile]

Its not the boilers fault ( in this case ) !

Its dirt in the heating system which has circulated and now blocked the plate heat exchanger.

Tony