Viessmann Vitosorp 200-F Installation Instructions For Contractors page 98

Troubleshooting
Fault codes
(cont.)
Fault code dis- System characteristics
played
dd Control mode without room
influence
dE Control mode without room
influence
dF Control mode without room
influence
E0 Control mode
E1 Burner in a fault state
E2 Burner in a fault state
E3 Burner in a fault state
E4 Burner blocked
E5 Burner blocked
E6 Burner blocked
E7 Burner in a fault state
98
Cause
Lead break, room temper-
ature sensor, heating cir-
cuit 1 (without mixer)
Lead break, room temper-
ature sensor, heating cir-
cuit 2 (with mixer)
Lead break, room temper-
ature sensor, heating cir-
cuit 3 (with mixer)
External LON subscriber
error
Ionisation current too high
during calibration
No calibration as flow rate
too low
Heat transfer too low dur-
ing calibration
Temperature limiter has
shut down.
24 V power supply fault
Flame amplifier fault
Pressure in process circuit
too low
Ionisation current too low
during calibration
Measures
Check room temperature sensor,
heating circuit 1 and remote control
settings (see page 148)
External room temperature sensor
for Vitotrol 300-A or integrated sen-
sor for Vitotrol 200-A/200-RF/300-
A/300-RF
Check room temperature sensor,
heating circuit 2 and remote control
settings (see page 148)
External room temperature sensor
for Vitotrol 300-A or integrated sen-
sor for Vitotrol 200-A/200-RF/300-
A/300-RF
Check room temperature sensor,
heating circuit 3 and remote control
settings (see page 148)
External room temperature sensor
for Vitotrol 300-A or integrated sen-
sor for Vitotrol 200-A/200-RF/300-
A/300-RF
Check connections and LON sub-
scribers.
Check gap between ionisation
electrode and burner gauze as-
sembly (see page 52).
In open flue operation, prevent
high levels of dust in the combus-
tion air.
Press reset button R.
Ensure adequate heat transfer.
Press reset button R.
Ensure adequate heat transfer.
Press reset button R.
Replace control unit.
Replace control unit.
Top up with water; see page 41.
Check process circuit for tightness.
If the fault recurs, inform
Viessmann Technical Service.
Check ionisation electrode:
Distance to burner gauze assem-
■
bly (see page 52)
Electrode contamination
■
Connecting cable and plug-in
■
connections
Check flue system; remove flue
gas recirculation if required.
Press reset button R.