Tgc Bc901h Manual Jun 2026

Use the adjustment buttons to reach your desired heat.

: Used to increase or decrease the hot water temperature. tgc bc901h manual

: Under the Gas Safety Ordinance in Hong Kong, all installation and maintenance must be performed by a registered gas contractor . Technical Maintenance Use the adjustment buttons to reach your desired heat

: Lights up when the water temperature is set to 50°C or higher as a burn hazard warning. tgc bc901h manual

The stepper motor wiring (4-pin to driver) is clearly labeled: A+, A-, B+, B-. The manual also specifies which color wire on the BC-901H corresponds to each (red/blue for coil A, black/green for coil B). No multimeter guessing needed.