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bosch tankless ea

  1. EA code from BoschPro gwh c800es ng

    hello Ive had the BoschPro gwh c800es ng series tankless heater for about a month and it has worked excelent untill the other day i got an EA error(no flame detected at water flow). it is currently 10 degrees outside and this is the only thing i can think of that is different from the...