7113126.02 (3-08/13) 40
I N S TA L L E R S e c t i o n ( e n )
CODE
DISPLAYED
FAULT POSSIBLE REASON SERVICE ACTION
E98 Electronic board
parameters incorrectly
congured
• The electronic board has been
replaced and not yet calibrated
for the boiler model.
• Parameters F03 and F12 have
not been set or have been
incorrectly set.
• Set parameters F03 and F12 with the values indicated
in the table in the SETTING PARAMETERS section
according to the boiler model indicated on the rating
plate.
Flashing
Boiler operating at
reduced power.
• No inlet gas pressure.
• Gas valve modulator wires not
connected.
• Flame sensing electrode faulty or
incorrectly positioned.
• Air-ue duct partially obstructed.
• Gas valve faulty.
• Electronic board faulty.
• Check the gas supply pressure
• (for natural gas Palim.>9mbar).
• Check the connection of the gas valve modulator
wiring to the electronic board.
• Check that the pressure at the burner has been
correctly calibrated (see the GAS VALVE section)
• Check the ame sensing electrode is in good
condition and correctly positioned (see the
POSITIONING THE IGNITION AND FLAME-
SENSING ELECTRODE section).
• Make sure the air and ue ducts are not obstructed
and have been correctly installed (they must not
exceed the prescribed maximum lengths and must
be tted with the correct diaphragm – see the
INSTALLING THE DUCTS section).
CH = central heating
DHW = domestic hot water
(*) DHW NTC and CH delivery probe: cold resistance value: approximately 10 kΩ @ 25° C (resistance decreases as temperature rises).
(**) NTC fumes probe: cold resistance value: approximately 49 kΩ @ 25° C (resistance decreases as temperature rises).
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