Viessmann B1KE Combi Series User Manual

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Vitodens 100-W, B1HE/B1KE Combi Installation/Service
Fault Messages
(continued)
Troubleshooting
Displayed
fault code
System characteristics Cause Measures
F.395 Burner in a fault state IO electrode ground
fault, BCU burner
control unit faulty
Check ignition electrode for ground fault.
If fault persists, replace BCU burner control unit:
See page 89.
Reset the boiler.
F.396 Burner in a fault state BCU burner control
unit faulty
Replace BCU burner control unit:
See page 89.
Reset the boiler.
F.399 Burner in a fault state IO electrode ground
fault, BCU burner
control unit faulty
Check IO electrode for ground fault.
If fault persists, replace BCU burner control unit:
See page 89.
Reset the boiler.
F.400 Burner in a fault state BCU burner control
unit faulty
Replace BCU burner control unit:
See page 89.
Reset the boiler.
F.401 Burner in a fault state IO electrode ground
fault, BCU burner
control unit faulty
Check IO electrode for ground fault. If fault persists,
replace BCU burner control unit:
See page 89.
Reset the boiler.
F.402 Burner in a fault state BCU burner control
unit faulty
Replace BCU burner control unit:
See page 89.
Reset the boiler.
F.403 Burner in a fault state Ionization electrode
ground fault, BCU
burner control unit
faulty
Check IO electrode for ground fault. If fault persists,
replace BCU burner control unit:
See page 89.
Reset the boiler.
F.404 Burner in a fault state BCU burner control
unit faulty
Replace BCU burner control unit:
See page 89.
Reset the boiler.
F.405 Burner in a fault state Ionization electrode
ground fault, BCU
burner control unit
faulty
Check IO electrode for ground fault. If fault persists,
replace BCU burner control unit:
See page 89.
Reset the boiler.
F.406,
F.408,
F.410
Burner in a fault state BCU burner control
unit faulty
Replace BCU burner control unit:
See page 89.
Reset the boiler.
F.416 Burner locked out Flue gas temperature
sensor incorrectly
positioned
Fit flue gas temperature sensor correctly.
See “Repairs”.
Carry out mains reset after fault has been remedied.
F.417,
F.418
Burner in a fault state BCU burner control
unit faulty
Replace BCU burner control unit:
See page 89.
Reset the boiler.
F.425 System operating
normally; calculation
not working
Time synchronization
failed
Set the time. If external time is used, check parameters
1504 and 508.
F.430 Normal operation in
line with target values
of boiler
Communication error
gateway
Check gateway module connecting cable and
power supply.
F.446 Burner in a fault state Deviation, boiler supply
temperature sensor/
high limit safety cutout
Check the supply temperature sensor/high limit safety
cut-out.
Check plug-in connection and lead to sensor.
Reset the boiler.

Viessmann B1KE Combi Series Specifications

General

Brand	Viessmann
Model	B1KE Combi Series
Category	Boiler
Language	English