Viessmann Vitoflame 200 Service Instructions Manual page 20

Troubleshooting
Diagnostics
(cont.)
Fault/system Flashing
behaviour code red
at LMO 14
2 ×
Burner starts
and flame is a d a e s
f formed, but d b t
2 ×
burner cuts
out after safety out after safety
time expires
2 ×
2 ×
2 ×
7 ×
Flame
extinguishes extinguishes
during
7 ×
operation
7 ×
7 ×
7 ×
Ignition
switches ON s tc es O
d i
during
7 ×
operation
7 ×
Flame pulsates
20
Cause
Flame monitor
contaminated
Flame monitor receives
insufficient light
Flame monitor faulty
Oil burner control unit
faulty
Carbon deposits on
flame tube or on sensor
plate
Air in suction line
Nozzle faulty
Burner incorrectly
adjusted
Sensor plate
contaminated
Flame monitor
contaminated
Sensor plate
contaminated
Nozzle contaminated or
faulty
Fan pressure too high
Oil consumption too
high
Remedy
Clean flame monitor
Clean sensor plate
Replace flame monitor
Replace oil burner
control unit
Cleaning flame tube
Seal line and filter
Nozzle replacement
Adjust pre−settings
correctly (see page 35)
Clean sensor plate
Clean flame monitor
Clean sensor plate
Nozzle replacement
Check fan pressure via
test nipple on top of fan
housing (U−shaped
pressure gauge). Adjust
air valve or blast tube
connection to ensure
that lower value of
static burner pressure
(see standard values
for burner settings,
page 35) is not
exceeded.
Adjust oil pressure
correctly (see page 35)