69
Message
System characteristics
Cause
Measures
F.196/13F0
No power generation
Flammable gases sensor
has responded.
■
Check the balanced flue system
for:
–
Flue gas recirculation
–
Leaks
■
Check ventilation air supply for:
–
Ingress of flue gas due to insuf-
ficient clearance from,
for example, the flue system of
a solid fuel boiler
–
Outgassing/contamination in
the air supply system (e.g. sili-
cones, oils, paints, detergents,
deposits, etc.)
If the fault message appears dur-
ing initial commissioning: Immedi-
ately close the gas shut-off valve
on the fuel cell module or the gas
shut-off valve for the entire unit.
Notify Viessmann Technical Serv-
ice.
Before commissioning, the flam-
mable gases sensor
must
be re-
placed.
Note
The fault message can only be re-
set on the programming unit of the
fuel cell module.
F.198/17F0
No power generation
Fault, reformer burner ig-
nition
Reset the fault once.
If the fault recurs, notify Viessmann
Technical Service.
F.199/19F0
No power generation
Fault, reformer burner ig-
nition
Reset the fault once.
If the fault recurs, notify Viessmann
Technical Service.
F.200/1AF0
No power generation
Combustion control CO
content outside tolerance
range
Check gas type setting, correct if
required.
If the correct gas type has been
set, notify Viessmann Technical
Service.
Note
The message can
only
be cleared
on the programming unit of the fuel
cell module.
F.248/67F1
No power generation
Air in the distilled water
circuit
Carry out fuel cell module commis-
sioning again.
If the fault recurs, notify Viessmann
Technical Service.
Note
The message can
only
be cleared
on the programming unit of the fuel
cell module.
Troubleshooting
Message overview
(cont.)
5839343
Diagnosis
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