6 720 817 545 (2016/02)
Optiflow
20 | Troubleshooting
E0
Failure of control module.
▶ Unplug the electrical connection for 10
seconds.
▶ Reconnect and restart the appliance.
▶ If the problem persists, call an authorised
service technician.
E1
Hot water temperature sensor detects overheating.
▶ Let the appliance cool and try again.
If the problem persists, call an authorised
service technician.
E4
Air temperature sensor detects overheating (leaking
combustion products inside the combustion
chamber).
▶ Switch off at the power point and remove the
plug from the electrical socket.
Do not try to Restart the appliance.
▶ Call a service agent immediately.
E9
Activated thermal fuse.
▶ Call an authorised service technician.
EA
Flame not detected.
▶ Check that the gas to the appliance has not
been turned off.
▶ Unplug the electrical connection for 10
seconds.
▶ Reconnect and restart the appliance.
▶ If the problem persists, call an authorised
service technician.
EC
Loss of ionization in less than 5 seconds during 5
times.
▶ Unplug the electrical connection for 10
seconds.
▶ Reconnect and restart the appliance.
▶ If the problem persists, call an authorised
service technician.
EE
Modulating solenoid valve disconnected.
▶ Check solenoid connections.
▶ If the problem persists, call an authorised
service technician.
EF
Wrong gas connected.
▶ Call an authorised service technician.
F7
A flame is detected although the appliance is
switched off.
▶ Unplug the electrical connection for 10
seconds.
▶ Reconnect and restart the appliance.
▶ If the problem persists, call an authorised
service technician.
F9
Safety solenoid valve disconnected.
▶ Call an authorised service technician.
FA
Fault in the gas control valve.
▶ Call an authorised service technician.
FC
Buttons stuck in a 'pressed' position for more than 30
seconds.
▶ Release the button.
▶ If the problem persists, call an authorised
service technician.
Display
Description
Possible solution
Table 11
Summary of Contents for Optiflow GWH16 3 CT E23 F6 L S2405
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