94
Cause
Measure
Configuration fault, butterfly valve: Parameter "0C:2",
"0C:3" or "0C:4" in the
"Boiler"
group is set and pa-
rameter "55:1" in the
"General"
group is set.
■
With butterfly valve:
Set parameter "55:0" in the
"General"
group.
■
Without butterfly valve:
Set parameter "0C:1" in the
"Boiler"
group.
B0 Short circuit, flue gas temperature sensor
Control mode
Cause
Measure
Short circuit, flue gas temperature sensor
Check the flue gas temperature sensor: See chapter
"Checking temperature sensors"
B1 Communication fault, programming unit
Control mode
Cause
Measure
Communication fault, programming unit
Check connections; replace programming unit if neces-
sary.
B5 EEPROM error
Control mode
Cause
Measure
Internal fault
Replace the low voltage PCB.
B6 Invalid application
Continuous operation
Cause
Measure
Invalid application
■
Repeat commissioning.
■
Set application:
Single boiler system:
"Single boiler constant control"
Multi boiler system:
"Boiler in the Cascade"
B7 Coding card
Boiler is regulated by the temperature controller.
Cause
Measure
Fault, coding card
Insert or replace the coding card: See chapter "Inserting
the coding card"
B8 Flue gas temperature sensor disconnection
Control mode
Troubleshooting
Fault messages
(cont.)
5863679
Diagnosis
Содержание Vitotronic 11 CC1E
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