Failures - Trianco TRO Evolution System Series Installation And Operating Instructions Manual

26.- 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.
Red flashing
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).
Boiler failures:
FAILURE CAUSE
- The pump is not turning
RADIATOR
- Air in hydraulic circuit
DOES NOT
HEAT UP
- Burner badly adjusted
EXCESSIVE
- Flue not correctly sealed
NOISE
- Flame unstable
- Flue not insulated
Error code table
LED "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
(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
contacts, other failures
flame loss during
or internal failure, output
SOLUTION
Unblock the pump
Drain the installation and
the boiler (the automatic
air drain valve cap must
always be loose)
Adjust it correctly
Eliminate any leaks
Examine the burner
Suitably insulate it
functioning
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