If you have landed on this page, chances are you are staring at a TGC BC-90-1H device—likely a battery charger, power supply, or industrial control unit—and you need the manual to operate it safely, program its parameters, or fix an error code. You are not alone.
Turn off the unit and inspect the internal impeller for debris or cracks. No power supply
However, I can guide you on how to approach finding or creating a manual for such a device:
The front interface is where the magic happens. According to the manual, you will find: tgc bc-90-1h manual
If the bathroom remote is new or has been disconnected, it may need to be re-paired with the main unit (refer to the main RBOX heater manual). Maintenance
Upon initial startup, the default temperature is typically set to 42° C. The unit remembers the last set temperature. Adjusting Water Temperature
[35°C - 48°C] --> Standard Range (Safe for daily use, showers, and kitchens) [49°C - 50°C] --> High Temp Threshold (Red Safety Light activates) [51°C - 60°C] --> Scalding Risk Zone (Restricted modifications while active) Modifying the Temperature If you have landed on this page, chances
: Switch on the main electrical isolator switch (220V/50Hz).
To get the most out of your TGC BC-90-1H, follow these expert tips:
Press the button to activate the controller. The digital display and indicators will light up, showing the last used temperature (default is typically 42°C if first-time use). No power supply However, I can guide you
: Fully open the main cold water supply valve and ensure water flows freely through the hot water tap.
The BC-90-1H is a wired unit. If the screen is blank, ensure the main power to the water heater is on.
Drill holes, insert wall plugs, and securely screw the main hanging bracket to the wall.
Press the Priority Button on your BC-90-1H. Its priority indicator light will turn on, and other controllers will flash or turn off.
While the controller is active, use the arrow buttons or the temperature button to set your desired temperature (typically ranging from 35°C up to 48°C or higher depending on the model setting). The system will remember this setting for the next use. 3. Taking Priority Control (Priority Button)