Viessmann VITOPEND 200 Installation And Service Instructions Manual page 84

Troubleshooting
Fault codes
(cont.)
Display Const. Weath.‐
fault comp.
code
dd X
dE X
E4 X X
E5 X X
E6 X X
F0 X X
F2 X X
84
System char- Cause
acteristics
Regulated op- Room tem-
eration without perature
room influence sensor, heat-
ing circuit A1
lead broken
Regulated op- Room tem-
eration without perature
room influence sensor, heat-
ing circuit
M2 lead bro-
ken
Fault – sup-
Burner
blocked ply voltage
24 V
Fault – flame
Burner
blocked amplifier
Burner control Flue gas/
unit fault ventilation
system
blocked
Burner Internal fault
blocked
Burner control Temperature
unit fault limiter has
responded
Remedy
Check the room
temperature sen-
sor, heating cir-
cuit A1 and the
remote control
DIP switch set-
tings (see
page 110)
Check the room
temperature sen-
sor, heating cir-
cuit M2 and the
remote control
DIP switch set-
tings (see
page 110)
Replace the con-
trol unit
Replace the con-
trol unit.
Check the flue
gas/ventilation
system and air
pressure switch;
press "E"
Replace the con-
trol unit
Check the heating
system fill level,
the circulation
pump, the tem-
perature limiter
and connecting
cables/leads;
ventilate the sys-
tem; press "E"