changed the pcb on my isar 24 he ideal,but still shows error code `H` 5. me thinks it could be the pins on front of pcb not in right position? am I right.can` I` please advise.wife ready for devorce
you're in luck I have just changed the PCB on that boiler counting from the left the two pins should be in 3&4 when you switch back on the code should be 7
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