(Available on select models) Activates the preheat function to provide instant hot water.
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.
Beyond basic programming, the includes a “Factory Settings” menu. Access it only if you understand HVAC/control logic. tgc bc901h manual
| Parameter | Description | Range | Default | |-----------|-------------|-------|---------| | F01 | Temperature differential (hysteresis) | 0.5°F – 5°F | 1.0°F | | F02 | Compressor short-cycle delay | 2 – 10 min | 5 min | | F03 | Sensor type (internal/external) | 0=Internal, 1=External | 0 | | F04 | Temperature calibration offset | -9°F to +9°F | 0 | | F05 | Backlight timeout | 0 (always on) to 60 sec | 15 sec |
| Problem | Possible Cause | Recommended Action | | :--- | :--- | :--- | | No hot water when tap is opened. | Power supply to the heater or remote is off. Gas supply is off. Minimum water flow not achieved. | Ensure the appliance has power. Check that the gas meter valve is open. Ensure water pressure is sufficient. | | Water temperature is unstable. | Water pressure is fluctuating. Remote control priority is being changed by another user. | Check that no other tap is being used. If another remote is active, wait until it releases priority, or request priority on your remote. | | Green indicator light on remote is off. | The water heater is not in standby mode due to a power or system issue. | Check the main power supply to the water heater. | | Remote control buttons are unresponsive. | The remote does not have priority control. A system error has occurred. | Press a button like the temperature adjuster to request priority. If it still doesn't work, try turning the appliance off and then on again. | (Available on select models) Activates the preheat function
When the hot water temperature is set to 50°C or higher, the system is designed with safety in mind. Always check the water temperature with your hand before using it to avoid burns. Remote Control Lock/Standby
The is a bathroom remote controller designed for use with Towngas (TGC) instantaneous gas water heaters. It allows users to manage water temperature and circulation settings directly from the bathroom. 1. Key Controls & Display | Power supply to the heater or remote is off
Several trusted websites host user manuals for legacy or industrial equipment: