Viessmann VITOFLAME 200 Service Instructions Manual page 25

Diagnosis (burner control unit LMO 14. ...)
Fault/ Flashing
characteristics code
red at
LMO 14
Burner sooty
CO content
2
too low
Flue gas
temperature
too high
Burner
operates,
constant red
flickering light
on burner
control unit
Cause
Too little or too much air
Insufficient chimney
draught
Nozzle faulty
Flame tube extension
(for 15 to 33 kW) or
combustion chamber
liner (for Vitola 200, 40 to
63 kW) is missing
Incorrect 0−point
adjustment of blast tube
connection
Incorrect setting
Infiltrating air
Oil consumption too
high
Boiler contaminated
No fault, interface
diagnosis
Troubleshooting
(cont.)
Remedy
Correct setting.
Check and clean
impeller.
Check boiler room
ventilation.
Check flue and flue gas
baffles
Replace nozzle, install
correct nozzle (see
page 36)
Fit flame tube extension
or combustion chamber
liner
Check and, if necessary,
correct blast tube
connection 0−point
adjustment (see
page 15)
Check setting (see
page 36)
Seal flue pipe at boiler
adaptor.
Retighten combustion
chamber cover screws
and those on flue outlet
cover.
Match oil flow to rated
output of boiler
Clean boiler and correct
burner adjustment
Press reset button > 3 s
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