Technical data

Troubleshooting

Diagnostics

Fault display

A Fault display

B Fault symbol

C Fault number

D Fault code

The red fault indicator flashes for every fault. A fault in the burner control unit causes the display to show ” ”.

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

Checking and acknowledging faults

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.

5418 911 v1.6

RESET

Outside temp.

sensor

Fault

ºC