Operating instructions

122
Dis-
played
fault
code
Const. Weath.-
comp.
System char-
acteristics
Cause Measures
E1 X X Burner in a fault
state
Ionisation
current too
high during
calibration
Check gap be-
tween ionisation
electrode and
burner gauze as-
sembly (see
page 42).
In open flue opera-
tion, prevent high
incidence of dust in
the combustion
air.
Press reset button
R.
E3 X X Burner in a fault
state
Heat transfer
too low during
calibration.
Temperature
limiter caused
shutdown.
Ensure adequate
heat transfer.
Press reset button
R.
E4 X X Burner blocked 24 V power
supply fault
Replace control
unit.
E5 X X Burner blocked Fault, flame
amplifier
Replace control
unit.
Troubleshooting
Fault codes
(cont.)
5772 909 GB