G_EN_08
28
Operation of the flue gas fan
When the fireplace is started up using the remote control, first the flue gas fan will be started. As soon
as it creates sufficient underpressure in the flue gas duct, the pressure sensor will transmit a release
signal to the modubox C. Only then, the start-up cycle of the fireplace will begin. The pilot flame is
lighted, and as soon as it is detected by the modubox C, the main burner will be ignited.
If the flue gas fan together with the pertaining control is supplied by Metalfire, then the pressure sensor
and the speed of the fan is set by Metalfire.
The draught must be checked by means of a flue gas test. 10 minutes after the start-up from cold
condition, the flue gases must correctly be evacuated through the flue gas duct.
Indication LED on the EFC21 control
1 Operating/Indication LED
2 Alarm LED
3 Manual ON/OFF button
Observation
Type of fault
Remedy
Indication
LED (1)
Alarm LED
(2)
Uninterrupt
ed red
No supply voltage.
1.Start the fireplace again using the remote
control.
Blinking
red
Wrong cable connection
between EFC 21 and fan,
or a problem with the
pressure sensor in the fan
(insufficient underpressure,
blockage in chimney,
defective sensor,
measuring elements dirty)
1.Check the wiring.
2.Check and clean the flue gas duct/fan.
3.Clean the measuring element of the pressure
sensor
4. Replace the pressure sensor, and set
according to the setting of the defective pressure
sensor.
Blinking
green
Fan has started up, system
is awaiting the release
signal from the pressure
sensor.
1.Check the wiring of the pressure sensor.
3.Check the chimney and fan for contamination,
and clean, if required.
4.Check the pressure sensor in the fan.
Uninterrupt
ed green
Fan is operating normally
and fireplace starts up.
Blinking
red, green
or yellow
Blinking red Service mode
Press the ON/OFF button on the EFC 21 control
(3)
1
3
2