Viessmann VITODENS 222-F Installation And Service Instructions Manual page 88

Troubleshooting
Fault messages
(cont.)
Fault number System characteristics
on the display
F.543 Mixer closes. Heating circuit
pump is operational.
F.544 Mixer closes. Heating circuit
pump is operational.
F.545 Mixer closes. Heating circuit
pump is operational.
F.546 Mixer closes. Heating circuit
pump is operational.
F.547 Mixer closes. Heating circuit
pump is operational.
F.574 Control mode without room
influence
F.575 Control mode without room
influence
F.576 Control mode without room
influence
F.577 Control mode without room
influence
F.578 Control mode without room
influence
F.579 Control mode without room
influence
F.580 Control mode without room
influence
F.581 Control mode without room
influence
88
Cause
Short circuit, flow temper-
ature sensor for heating
circuit 1 with mixer
Lead break, flow tempera-
ture sensor, heating circuit
2 with mixer
Short circuit, flow temper-
ature sensor for heating
circuit 2 with mixer
Lead break, flow tempera-
ture sensor, heating circuit
3 with mixer
Short circuit, flow temper-
ature sensor for heating
circuit 3 with mixer
Room temperature sensor
for heating circuit 1 not
available
Lead break, room temper-
ature sensor, heating cir-
cuit 1
Short circuit, room tem-
perature sensor, heating
circuit 1
Room temperature sensor
for heating circuit 2 not
available
Lead break, room temper-
ature sensor, heating cir-
cuit 2
Short circuit, room tem-
perature sensor, heating
circuit 2
Room temperature sensor
for heating circuit 3 not
available
Lead break, room temper-
ature sensor, heating cir-
cuit 3
Measures
Check flow temperature sensor
TS1 on extension kit mixer (ADIO
electronics module). See
page 91.
Check flow temperature sensor
TS1 on extension kit mixer (ADIO
electronics module). See
page 91.
Check flow temperature sensor
TS1 on extension kit mixer (ADIO
electronics module). See
page 91.
Check flow temperature sensor
TS1 on extension kit mixer (ADIO
electronics module). See
page 91.
Check flow temperature sensor
TS1 on extension kit mixer (ADIO
electronics module). See
page 91.
Check external room temperature
sensor for heating circuit or room
temperature sensor for remote
control unit.
Check external room temperature
sensor for heating circuit or room
temperature sensor for remote
control unit.
Check external room temperature
sensor for heating circuit or room
temperature sensor for remote
control unit.
Check external room temperature
sensor for heating circuit or room
temperature sensor for remote
control unit.
Check external room temperature
sensor for heating circuit or room
temperature sensor for remote
control unit.
Check external room temperature
sensor for heating circuit or room
temperature sensor for remote
control unit.
Check external room temperature
sensor for heating circuit or room
temperature sensor for remote
control unit.
Check external room temperature
sensor for heating circuit or room
temperature sensor for remote
control unit.