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Mend Isar HE24 Boiler Heating Repair

how can i fix?

hi i have just replaced the PCB on my boiler an isar he24 although the led panel is back working it now says it has a fault H5, can anyone help please really cold thankyou
mark

mark stubberfield
November 2010
IsarIsar HE24Heating, Home Heating SystemsBoiler Heating Repair
You haven't connected the 'jumpers' correctly, the pcb doesn't know what the boiler is.

Carefree
November 2010

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Isar HE24 Boiler: Fault H5 - Help & Fixes