Merlin
Product Data Sheet
S&S Northern Ltd
5
Gas on LED
When the gas service touch button has been activated the Merlin will check the
installation for gas leaks. If gas proving is successful, the gas valve will open and the green
‘Gas On’ LED will illuminate.
GREEN = Gas On
OFF = Gas Off
Electric on LED
When the electric service touch button has been activated, the electrical supply is turned on
and the Electric LED will illuminate BLUE.
BLUE = Electric On
FLASHING = Electric Off, Electric button enabled
OFF = Electric Off, Electric button disabled
Water on LED
When water service touch button has been activated, the water supply is turned on and the
Water LED will illuminate BLUE.
BLUE = Water On
FLASHING = Water Off, Water button enabled
OFF = Water Off, Water button disabled
Testing LED
This LED will illuminate GREEN for approximately 30 seconds when the panel is
checking the integrity of the gas installation upon start up.
GREEN = proving the gas line, do NOT operate any appliances.
Test Fail LED
Under normal working conditions this LED is off. When the panel detects a gas leak on start-
up or incorrect wiring at the gas pressure transmitter the LED will illuminate AMBER and the
gas valve will remain closed.
OFF = OK
AMBER = gas proving failed
Pressure Low LED
Under normal working conditions the LED is off. The LED will illuminate AMBER when
pressure of the gas supply drops below 12mBar for 10 secs. The gas valve will close. (The
system will only go to pressure low from gas on).
OFF = OK
AMBER = gas supply pressure low.
Timeout LED
Under normal working conditions this LED is off. This LED will illuminate AMBER when
auto-shut down has occurred.
OFF = OK
AMBER = auto-shut down
EM Stop LED
If an emergency shut off button (either remote or on the panel) is pressed, the LED will
illuminate AMBER and the gas will be turned off. The EM Stop button must be re-set before
restarting the system.
OFF = OK
AMBER = EM Stop button pressed