35
Types of malfunction
We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
Burner does not ignite
Malfunction of the flame monitoring
unit because of unsuccessful ignition of
the burner; the control board arranges for
a series of automatic deactivation attempts
prior to reporting the malfunction
Safety thermostat (STB)
Tripping of the safety thermostat.
If the temperature detected by
the thermostat is too high, it disconnects
and disables the operation of the unit.
Burner fan defective
Combustion air fan is defective or
the signal to the control board lies beyond
the tolerance range of the desired speed.
Disruptive flame with start
Disruptive flame was detected by
the flame monitoring unit with the start.
General defect
The control board has identified
an undesired response.
• Gassupplynotpresentordefective
• Phaseandneutrallinesswitched
• Earthconductormissingorincorrectlyconnected
• Ignitionelectrodedefectiveorincorrectlyconnected
• Monitoringelectrodedefectiveorincorrectlyconnected
• Flamemonitoringunitdefective
• Ignitionnozzledirtyordimensions
incorrect
• Recirculatingfandefective
• Faultycoolingoftheheatexchanger
• Capillarytubeorprobedefective
• Probepositionmaybetooclosetotheheatexchanger
or incorrect position
• Checksafetythermostatforelectricalconductance
• Sealsdefective,hotuegasesarriveattheprobe
• Note:Theprobeisnotonlysensitiveatthetip,but
along its entire capillary tube length
• Lowvoltagecabletotheburnerfandefectiveornot
connected
• Burnerfandefective
• Burnerboarddefective
• Gasvalvesdefective
• Ignitiongasburnerorburnerdefective
• Ignitiongasnozzledefective
• Gaslinesealsdefective
• Flamemonitoringunitdefective
• Monitoringelectrodedefective
• Boarddefective
F1
F5
F6
F8
F2
Error number and error
• Cableconnectiondisconnectedordefective
• Boarddefective
• Errorattheburner
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