Viessmann VITODENS 200-W Service Instructions Manual page 79

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