Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual page 130

Troubleshooting
Fault codes
(cont.)
Dis- Const.
played
fault
code
E1 X
E3 X
E4 X
E5 X
E6 X
130
Weath.- System char-
comp. acteristics
X Burner in a fault
state
X Burner in a fault
state
X Burner blocked Fault, 24 V
X Burner blocked Fault, flame
X Burner blocked System pres-
Cause Measures
Ionisation Check gap be-
current too tween ionisation
high during electrode and
calibration burner gauze as-
sembly (see
page 52).
In open flue opera-
tion, prevent high
incidence of dust in
the combustion
air.
Press reset button
R
Heat transfer Ensure adequate
too low during heat transfer.
calibration. Press reset button
Temperature R
limiter has
shut down
Replace control
supply volt- unit
age
Replace control
amplifier unit
Top up with water
sure too low