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ideal isar over heating fault code h9/l9?

hello, i have an absolute rubbish ideal isar he30 boiler and i keep getting fault code h9/ l9 according to the book its the heat exchange.does anyone have any ideas as its no longer in warrenty
thanks janette

janette
December 2009
Heating, Home Heating SystemsHeating Fault Code
is 100 per cent pump its over heating i work directly for ideal

idealman
September 2011
learn to spell warranty then save up for a baxi duo t

jimbo
August 2011
changed pump and fire thermister heat exchanger still overheating any clues

john
December 2010
Same problem on my boiler, replaced the faulty pump now all working fine. Fairly easy part to change.

Mark
January 2010
yes pressure is around 2

janette
December 2009
check your system pressure is between 1 to 1.5 bar.

darren
December 2009
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