Evolution EV FHDX
52
24
FAILURES
This section provides a list of the most common burner and boiler failures.
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.
Error code table
Red flashing LED code “AL”
on
term. 10
Possible cause
Flashes 2 times
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
Flashes 4 times
On
External light during burner ignition
Flashes 7 times
On
Excessive flame loss during functioning (limited
number of repetitions)
- Fuel valves defective or dirty
- Flame detector defective or dirty
- Burner maladjustment
Flashes 8 times
On
Supervision of fuel pre-heater time
Flashes 10 times
On
Cabling fault or internal failure, output contacts,
other failures
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).
Boiler failures
FAILURE CAUSE
SOLUTION
- Pump not turning
Unblock the pump
RADIATOR
DOES NOT
HEAT UP
- Air in hydraulic circuit
Drain the installation and
the boiler (the automatic
air bleed valve cap must
always be loose)
- Burner badly adjusted
Correctly adjust it
- Flue not correctly sealed
Eliminate any leaks
- Flame unstable
Examine the burner
EXCESSIVE
NOISE
- Flue not insulated
Suitably insulate it
