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Warm Weather Shutdown (WWSD) Active
When the outdoor temperature (menu reading 1-08) exceeds the WWSD setting (menu setting 2-04), “Att 6” is displayed during central heat demands, and the boiler only responds to DHW demands. To avoid this error, increase menu setting 2-04. If the indicated temperature reading does not match the actual outdoor temperature, inspect the outdoor sensor wiring. If wiring is fine, disconnect the outdoor sensor, menu reading 1-08 should indicate “OPEn”, if not, replace the controller, if “OPEn” is indicated replace the outdoor sensor
