Duomo GS920 Manual - Page 6

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In case of alarm

Extinguish any naked flames.

Do not switch lights or electrical devices on or off.

Open all windows and door to increase ventalation.

•

If the ALARM LED is off the levels of gas have dropped. A responsible, qualified person is now safe to find the cause of

the alarm.

•

If the alarm sound reamins constant and the cause is not evident or not possible to eliminate turn off the emergency

isolation valves to the area and contact your gas provider emergency line. They will advise accordingly.

Troubleshooting

The Problem

The sensor does not power up

The fault LED is illuminated

The detector is repeatedly issuing an alarm

The detector does not shut off connected

devices when going into alarm state.

Connected Solenoid valve is not operating

well

This is a working document and will be updated as new troubleshooting and FAQs become apparent. If your issue is not listed here please

call Duomo (UK) on 01905 797989 and inform us so we can list your issue and associated solution here.

Still experiencing difficulties?

If you have made the checks above and are still experiencing diffculties then please call Duomo (UK) Ltd on

+441905 797989

for technical assistance.

t: 01905 797989

e: [email protected] | w: www.duomo.co.uk

Check that the 12/24 VDC power is present, and that positive and negative polarity has not been

inverted.

If the yellow fault LED remains illuminated check if a 5 year peroid has elapsed since installation

date. If the LED is blinking check if the earthquake proof sensor has been triggered. To reset, press

the reset button.

Check that there are no gas leaks. If the fault light is also illuminated, proceed as in the previous

paragraph

Check wiring is correct and that the jumper that carries the power to the relay has been set properly.

All relays must be free from electrical power. Check the connection drawing.

Check that nothing is draining power. Direct connection to the GS920 is not permitted for 12V DC

solenoid valves or sirens with power demand higher than 300mA. To connect a solenoid valve with

a higher power demand you have to use a battery. You can connect a pulsed 12V DC reset solenoid

valve.

The Solution