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How can I fix my?

My ideal isar he24 boiler is showing a fault code h 5 it won't fire up for heating or hot water can you tell me what the fault is please
Danny, January 2013
h5 is when the pcbs jumpers are fitted incorrectly or they are loose and come off check the jumpers

kash, January 2013
link Click here to see other fixes for Ideal Isar HE24.