Figure 20
Circuit troubleshooting
Figure 21
· After
initialization, Then push red button to turn on the LCD monitor and will display "LPG GAS DETECTOR" with yellow LED HIGH. The portable will
enter a normal state where it detects no gas. Green button is to reset the whole circuit.
Figure 22
The display shows
"NO GAS DETECTED”. And the red LED HIGH.
Figure 23
Once lighter's gas is pointed at the sensor, green LED will be HIGH and will display "GAS DETECTED" to indicate the gas presence. LCD will display "NO GAS DETECTED" and red LED will be HIGH if no gas presence.
