Heat Exchanger blocked can it be power flushed

[Uzair]

Hello

We are having problems with greenstar convetional 40cdi boiler. It was hitting 90 temp then cutting out and showing u codes. Enineer discovered its the ehat exchanger n the prob cant be fixed until january 5 unless we pay £900 odds... does anyone know if the system can be power flushed n if that will be effective in getting rid of the blockage. Its quite a bad blockage from the sounds of it

 

[xfr]

had mine power flushed same prob didn't work!!power flushing is very low pressure so if its stubborn it will not help

 

[Uzair]

Wonder if it is still worth a shot as need system cleaned anyway dont want the same prob when the new heat exchanger is fitted in... such hassles.... wat bad timing.. 2 wees for a fix grr