Diagnostics - Viessmann Vitoflame 200 Service Instructions Manual

Troubleshooting

Diagnostics

Fault/system Flashing
behaviour code red
at LMO 14
Burner does
not start (no
fault display),
indicator
does not
illuminate
Burner does 10 ×
not start (no
fault display),
indicator
illuminates
2 ×
Burner does
not start
2 ×
(with fault)
2 ×
8 ×
2 ×
Burner starts,
but no flame
is formed i f d
2 ×
2 ×
2 ×
2 ×
2 ×
18
Cause
No voltage
High limit safety cut−out
activated
Faulty electrical
connection, wires L 1 and
N interchanged or faulty
oil burner control unit
Motor faulty
Coupling between motor
and oil pump faulty
Oil pump seized or stiff
Oil preheater faulty
Ignition electrodes
poorly adjusted
Ignition electrodes damp
and contaminated
Insulation of ignition
electrodes cracked
Ignition trans former
faulty
Ignition cable faulty
Pump does not supply
oil
Remedy
Check fuse or
connector aBÖ in control
unit, electrical
connections, setting of
heating system ON/OFF
switch on control unit
and mains electrical
isolator
Press reset button on
boiler control unit
Check electrical
connection. If phases
correctly connected,
replace oil burner
control unit.
Replace motor
Replace coupling
Clean or, if necessary,
replace oil pump
Replace oil preheater
Adjust correctly (see
page 12)
Clean ignition electrode
block
Replace ignition
electrode block
Replace ignition
transformer
Replace ignition cable
Install pressure and
vacuum gauges on pump
and check build−up of
pressure (see following
paragraph)