Jenbacher j420 B121 ''Hardware Misfire'' Problem


I have a warning on control panel on the screen it's says ''Hardware Misfire'' and When I am looking to power reduce section, I can't see any lack of power.

I controled electronic fire bobin it's works without any problem.

I also controled the bougie and it's works too.

What should I do next ? I have no idea.

Thx for your all help.

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