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Yes all the time i press power button for 3 sec to reset the error, some time comes this error 3 or 4 times in a day. But beginning of this error started once in a month, later twice in a month, then later once in a week, now is more worst. And yes I remove the Fan and Clean the Blades, but...

hi, I have BOSCH Tankless T9800SE 160K BTU showing C1 & C2 errors. Intake pipe distanc is 39 foot & Outlet pipe distance is 43 foot, I am having this Machine from last 5 years working fine, but from last couple on months showing this errors. So I did many thing, but none fix the problem, as...