Service Manual

Page 63
Display
Description
Solution
▶ To unlock, reset the appliance by touching the ON/OFF
button for 3 sec.
▶ If the problem persists check the ignition electrode or
the ionization electrode.
EE
Modulating gas solenoid valve
disconnected.
▶ Check valve connection.
EF Wrong gas type.
▶ Natural gas appliance supplied with liquid propane gas.
▶ Liquid propane gas appliance supplied with NG.
F2 ECU internal error
▶ To unlock, reset the appliance by touching the ON/OFF
button for 3 sec.
▶ If the problem persists replace ECU.
F3 Memory failure
▶
To unlock, reset the appliance by touching the ON/OFF
button for 3 sec.
▶ If the problem persists replace ECU.
F7 A flame is detected before gas valve open.
▶
Check the electrodes and the cable.1)
▶ To unlock, reset the appliance by touching the ON/OFF
button for 3 sec.
▶ If the problem persists replace ECU.
F9 Safety gas solenoid valve disconnected.
▶
Check connections.1)
▶ To unlock, reset the appliance by touching the ON/OFF
button for 3 sec.
FA
Fault in the main gas shut-off valve or gas
manifold shut-off valve.
▶ Main gas shut-off valve or gas manifold shut-off valve
stuck/locked.
▶ Check main gas shut-off valve and gas manifold shut-
off valve electric circuit.
FC
Buttons touched for more than 30s.
Release the button.
High Pitch
Noise
Combustion flame with gas in excess or
lack of air (combustion adjustment is rich).
▶
Check that gas supply is the same as appliance gas
type (NG or LP).
▶ Check appliance CO2 adjustment (excessive CO2, see
table 19 or 20 located inside your Installation and
Operation manual).
Low Pitch
Noise with
Vibration
Combustion flame with air in excess or
lack of gas (combustion adjustment is
lean).
▶
Check that gas supply is the same as appliance gas
type (NG or LP).
▶ Check gas pressure supply (gas pressure too low).
▶ Check appliance CO2 adjustment (low CO2, see table
19 or 20 located inside your Installation and Operation
manual). Decrease A1 or A2 air adjustment parameter.
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