Vitodens 200-W B2HA 112, 150 Service
79
5683 710 - 09
Troubleshooting
Fault Codes
(continued)
*1
Control mode: Boiler/burner fully operational (fault code must be verified and reset).
Burner in fault mode: Boiler control requires manual reset before burner can resume operation.
Burner blocked: If fault cause is corrected, burner resumes operation.
*2
Detailed fault code coding address 38:xx (if available).
Fault code
on display
Detailed fault
code
*2
System behavior
*1
Cause
Corrective action
FA
154
Burner in fault mode
Fan not at standstill
Check the fan, the fan
connecting cables and fan
control. Check the fan control.
Press reset button
R
.
FC
190
Burner in fault mode
Gas valve faulty or faulty
modulation valve control;
or vent system blocked
Check the gas valve.
Check the vent system.
Press reset button
R
.
FD
227
Burner in a fault state
and additional fault B7 is
displayed
Boiler coding card is
missing
Insert the boiler coding card.
Press reset button
R
.
Replace control unit if fault
persists.
-
Burner in a fault state
Fault, burner control unit Check ignition electrodes and
connecting cables. Check
whether a strong interference
(EMC) field exists near the
appliance. Press reset button
R
.
Replace control unit if fault
persists.
FE
158, 159,
162 or
225
Burner in fault mode
Damaged or incorrect
boiler coding card or
main PCB
Press reset button
R
. If the fault
persists, check the boiler coding
card or replace it or the control
unit.
FF
224
Burner in fault mode
Internal fault or reset
button
R
blocked
Restart the equipment.
Replace the control unit if the
equipment will not restart.
N/A
Burner in hold/wait state, boiler not
displaying fault refer to coding address
38:XX
2
Gas supply - no/low gas
pressure detected
3
No boiler water circulation
detected
5
Flame failure during
stabalization
6
Boiler temperature has
exceeded the monitoring limit
8
Flue gas temperature has
exceeded the monitoring limit
29
Check connection at terminals 1
and L (jumper or installed safety
equipment of the Multi terminal
of the power pump module.
33
Power supply voltage, is below
minimal operation level, internal
fuse failure, replace control.