DOMUSA TEKNIK Domestic D-4 Installation Instructions Manual - Page 11

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18.- BURNER ERROR CODE
We have already mentioned that the burner is equipped with a cut-out system, indicated
by the reset button light. It may cut out accidentally, and in this case the steady red light on
this button will come on. You may unblock it by pressing the button for approx. 1 second.
When the burner is blocked and the steady red light is on, visual failure diagnosis may be
activated, in accordance with the error code table. To enter visual failure diagnosis mode,
hold down the reset button for at least three seconds.
Red flashing LED
code
Flashes 2 times
Flashes 4 times
Flashes 7 times
Flashes 8 times
Flashes 10 times
During the failure diagnosis time, the control outputs are disabled and the burner
remains off.
To exit failure diagnosis and activate the burner again, reset the burner control. Hold down
the reset button for approx. 1 second (<3 s).
- 9 -
Error code table
"AL"
on
Possible cause
term. 10
On
No flame established when ignition safety
time ends.
- Fuel valves defective or dirty
- Flame detector defective or dirty
- Burner maladjustment, no fuel
- Ignition unit defective
On
External light during burner ignition
On
Excessive flame loss during functioning
(limited number of repetitions)
- Fuel valves defective or dirty
- Flame detector defective or dirty
- Burner maladjustment
On
Supervision of fuel pre-heater time
On
Cabling fault or internal failure, output
contacts, other failures