Diagnostics - Viessmann VITODENS 200-W WB2B Series Start-Up/Service Instructions

Troubleshooting

Diagnostics

Fault display
A
2
1
3
0 0
4
RESET
A Fault display
B Fault symbol
The red fault indicator flashes for every fault. A fault in the burner control unit causes the display to show " ".
Fault
57
ºC
Mo
Checking and acknowledging faults
54
C D
B
Outside temp.
sensor
1
10
+
OK
?
C Fault number
D Fault code
The display flashes "Fault" if a fault
message is issued.
Plain text fault displays:
H Burner module
H Outdoor sensor
H Supply sensor
H Boiler sensor
H Common supply sensor (low-loss
header)
H DHW sensor
H Room sensor
H Flue gas sensor
H Collector sensor
H Solar DHW sensor
H Fault participant
Note: If an acknowledged fault is not removed, the fault message will be
re-displayed at 7 am the next day.
1. Press "i" for current fault.
2. Press "⊕ / " for other fault
messages.
3. Press " ". All fault messages are
acknowledged simultaneously, the
fault display will be deleted and the
red fault indicator continues to
flash.
+