Tgc Bc901h Manual

: Air intake or exhaust blockage. Ensure the external vent is not obstructed.

: If the unit fails to ignite after several attempts, turn off the hot water tap, wait 10 seconds, and try again. Power Reset tgc bc901h manual

Refer to the wiring diagram inside the terminal cover. Below is a standard mapping: : Air intake or exhaust blockage

Note: The exact sequence can vary slightly by model version. If the above does not work, try holding the button for 2 seconds before entering the number. turn off the hot water tap