Manual: Tgc Bc901h

| Error Code | Meaning | Solution | | :--- | :--- | :--- | | | Reverse polarity | Swap the clamps. Red to positive, black to negative. | | Err 02 | Battery voltage too low (< 2V) | Battery may be dead; attempt a bypass or replace battery. | | Err 03 | Short circuit | Check for bare wires touching. Unplug and inspect cables. | | Err 04 | Over-temperature | Let the unit cool for 30 minutes. Clear vents. | | Err 05 | Battery voltage too high | Check if you selected the wrong voltage (e.g., 12V battery on 24V setting). | | F01 | Internal fuse blown | Replace fuse (see manual for rating) or return for service. |

| 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 | tgc bc901h manual

: If you have multiple controllers (e.g., in the kitchen and bathroom), the "Priority" light must be on for that specific controller to adjust the temperature. Press the button to take control. Burner Indicator | Error Code | Meaning | Solution |

Shows the current temperature setting and provides diagnostic error codes if the unit malfunctions. | | Err 03 | Short circuit | Check for bare wires touching