89
Fault number
on the display
System characteristics
Cause
Measures
F.582
Control mode without room
influence
Short circuit, room tem-
perature sensor, heating
circuit 3
Check external room temperature
sensor for heating circuit or room
temperature sensor for remote
control unit.
F.682
Burner in a fault state
Air mass flow rate sensor
not installed
Install the correct fan.
Reset the appliance.
F.683
Burner in a fault state
Air mass flow rate sensor
faulty
Replace fan.
Reset the appliance.
F.684
Burner in a fault state
Back draught safety de-
vice faulty
Check the back draught safety de-
vice and replace if necessary.
Reset the appliance.
Note
If subscriber faults occur,
"Fault, subscriber ..."
is dis-
played.
Repairs
!
Please note
Residual water will escape when the boiler or
one of the following components is fitted or
removed:
■
Water-filled pipework
■
Heat exchanger
■
Circulation pumps
■
Plate heat exchanger
■
Components fitted in the heating water or
DHW circuit.
Water ingress can result in damage to other
components.
Protect the following components against
ingress of water:
■
Control unit components (especially in the
service position)
■
Electrical components
■
Plug-in connections
■
Cables and leads
Shutting down the boiler
1.
Switch OFF the power supply.
2.
Shut off the gas supply.
3.
If the boiler needs to be removed:
■
Disconnect the balanced flue system.
■
Drain the boiler on the heating water and DHW
sides.
■
Disconnect the on-site cables/leads.
Troubleshooting
Fault messages
(cont.)
6130884
Service
