Troubleshooting; Diagnosis - Viessmann Vitoflame 100 Service Instructions Manual

Troubleshooting

Diagnosis

Faults with flashing code display
Fault
Burner does not
start (with fault indi-
cation), indicator
illuminates
Burner does not
start (with fault dis-
play)
Burner starts, but no
flame is formed
24
Red Cause
flashing
code
10 x Wiring fault or internal
fault, other faults
2 × Motor faulty
2 × Coupling between motor
and oil pump faulty
2 × Oil pump seized or stiff
6 × Servomotor faulty
2 × Ignition electrodes badly
adjusted
2 × Ignition electrodes damp
and contaminated
2 × Insulation body of igni-
tion electrodes cracked
2 × Ignition transformer
faulty
2 × Ignition cable faulty
2 × Pump does not supply
oil
Measures
Check the electrical con-
nection
Replace motor
Replace coupling
Clean or, if required,
replace oil pump
Replace servomotor
Set correctly (see chap-
ter "Checking and
adjusting the ignition
electrodes")
Clean ignition electrode
block
Replace ignition elec-
trode block
Replace ignition trans-
former
Replace ignition cable
Install pressure and vac-
uum gauges at the pump
and check build-up of
pressure (see following
paragraph)