Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors page 119

Fault messages on the gas condensing...
Control unit System characteristics
message
F.200/1AF0 No power generation
F.248/67F1 No power generation
F.249/67F9 No power generation
F.294/9BF0 No power generation
F.296/A8F0 No power generation
F.297/A9F0 No power generation
F.299 Wrong time
(cont.)
Cause
Combustion control CO
content outside tolerance
range
Air in the distilled water
circuit
Air in the distilled water
circuit
Blockage in the flue sys-
tem
Gas pressure too low
Gas supply interrupted
Gas pressure too high
Real-time clock fault
Troubleshooting
Measures
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.
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.
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.
Check flue system.
Note
Reset the message on the fuel cell
module programming unit.
Then switch the ON/OFF switch of
the fuel cell module OFF for ap-
prox. 10 s and ON again.
Check the gas supply.
Check the gas supply.
Set the time. Check battery in heat
management unit.
119