Display Code

Illegal detection
Flame detection before burner ignition or after switching off. Possible causes are:

Dirty flame detection electrode or with soot between the electrode itself and the burner combustion head.

Inadequate tightness of gas solenoid valve during burner swithing off due to dirty elements in the valve or to possible damage to the valve itself causing gas leakage to burner.

Flame detection from some other burner placed opposite the first one (only when flame detection is via photocell).

Ignition failure
Failed ignition attempt or failed flame detection during ignition. Possible causes are:

Failed ignition of spark due to uncorrect connection of ignition transformer or of the cable between the transformer and the electrode.

Damaged ignition transformer.

Gas solenoid valve obstructing the passage of fuel due to damage or uncorrect (electric/hydraulic) connection.

Gradual opening gas solenoid valve so low as to avoid sufficient passage of fuel for burner ignition (see duration of first safety time).

Uncorrect regulation of comburent as well as fuel  impeding regular burner ignition even at low power

Missing flame detection during ignition due to some damage of the detection devices or to uncorrect connection to the flame control. In this case, control continuity of earth circuit between flame control and burner, and flame detection circuit.

Flame loss
Flame loss while the burner is working for a period of time higher than intervention time. Possible causes are:

Uncorrect regulation of comburent as well as fuels causing unstable flame.

Deterioration of or dirty detection probe, such as lampblack on the electrode or on the protection glass of the photocell.

Breaking in the flame detection devices or interruption of connection to the instrument.

Load missing
Electric load missing of connected loads. Possible causes are:

Malfunctioning of load fuse. In this case the alarm starts immediately durint the burner ignition.

Mulfunctioning of primary coil of ignition transformer or uncorrect connection to flame control. In this case the alarm starts immediately during the burner ignition.

Mulfunctioning of first phase gas safety valve or uncorrect connection to flame control. In this case the alarm starts after a little while, at the end of the burner ignition time

Mulfunctioning of second gas safety valve or uncorrect connection to flame control. In this case the alarm starts during the second gas stage working of the burner after the first gas stage switching off (only in case of discontinuous first gas stage).

Detection circuit failure
Malfunctioning of flame detection circuit. Possible causes are:

Short-circuited detection probe or connection to earth (only in case of detection via electrode).

Detection probe connected with reversed polarity (only in case of photocell detection) or short-circuited connections.

Missing connection between flame control and earth.

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