WARNING! Do not try to test the detector using a cigarette lighter!
Do not test the detector by starting the gas appliance without a flame!
Simply press the Test/Reset button any time while in normal operation. The YELLOW and RED LED should flash, the alarm should sound and the relay switches while the solenoid valve will cut off the gas flow. Release the button and manually arm back the solenoid valve. THIS IS THE ONLY WAY YOU SHOULD TEST THE DETECTOR.
The test feature checks the full operation of the detector. If the detector does not test properly return it immediately for repair or replacement.