Be Communication Error, Remote Control, Heating Circuit 3 - Viessmann VITOTRONIC 300 Installation And Service Instructions Manual

Fault messages
(cont.)
Cause
Communication error, Vitotrol remote control, heating
circuit 2

BE Communication error, remote control, heating circuit 3

Control mode without remote control
Cause
Communication error, Vitotrol remote control, heating
circuit 3
BF Incorrect LON communication module
■ Control mode
■ No communication via LON
Cause
Incorrect LON communication module
C1 External safety equipment on boiler
Boiler cools down.
Cause
External safety equipment on plug
C2 Communication error, solar control unit
Control mode
Cause
Lead break, KM-BUS to solar control module, type SM1
or to the Vitosolic
C3 Communication fault, extension AM1
Control mode
Measure
Check connections, lead (see separate installation and
service instructions) and parameter "00" in the Heating
circuit... group.
With wireless remote control:
■
Place the remote control near the wireless base sta-
tion and check connection (see separate installation
and service instructions).
Without wireless remote control:
■
Set parameter "00:0".
Measure
Check connections, lead (see separate installation and
service instructions) and parameter "00" in the Heating
circuit... group.
With wireless remote control:
■
Place the remote control near the wireless base sta-
tion and check connection (see separate installation
and service instructions).
Without wireless remote control:
■
Set parameter "00:0".
Measure
Replace LON communication module.
Measure
Check the connection and external safety equipment:
aBÖ
See chapter "Connecting external safety equipment"
Measure
Check KM-BUS cable and appliance.
Without solar control unit:
Set parameter "1A:0" in the "General" group.
Troubleshooting
127