Viessmann VITOFLEX 300-UF Operating Instructions Manual page 27

"Fault" is displayed
No. Fault message
017 Fault: Temperature level, hydraul-
ics, container X
018 Fault: Container X, cover closed
019 Fault: No container available
020 Fault: Changeover unit, time
monitoring
021 Fault: External charging
022 Fault: Thermal contact, boiler
pump
023 Fault: CO CO2
024 Fault: Electrostatic filter
025 Fault: Boiler flow sensor
026 Fault: Boiler return sensor
027 Fault: Contact sensor, feed
028 Fault: Boiler flue gas sensor
029 Fault: Cylinder sensor, top
030 Fault: Cylinder sensor, top centre
031 Fault: Cylinder sensor, centre
032 Fault: Cylinder sensor, bottom
centre
033 Fault: Cylinder sensor, bottom
034 Fault: Sensor f. weather-c. mode
035 Fault: System sensor
(cont.)
Cause
Loss of oil at the hydraulic unit
Pressure switch is incorrectly set
or faulty
Room temperature is too high
Material cover of container is not
in end position "open"
All containers are empty or in a
fault state
Changeover unit was running for
more than 5 minutes
External charging reports a fault
Electrical fault or motor overloa-
■
ded
No water or too little water in
■
the system
External detector reports CO or
CO2 emission into the boiler
room
Check possible cause at electro-
static filter control unit
Temperature sensor or test cable
is faulty
Temperature sensor or test cable
is faulty
Temperature sensor or test cable
is faulty
Temperature sensor or test cable
is faulty
Temperature sensor or test cable
is faulty
Temperature sensor or test cable
is faulty
Temperature sensor or test cable
is faulty
Temperature sensor or test cable
is faulty
Temperature sensor or test cable
is faulty
Temperature sensor or test cable
is faulty
Temperature sensor or test cable
is faulty
What to do if...
Remedy
Check the fittings, lines and cyl-
■
inders for leaks
Top up the oil
■
Replace pressure switch
■
Readjust setting for changeover
■
pressure at pressure switch
Reduce room temperature
■
Install oil cooler
■
Open container cover
Provide container with fuel
Check limit switch
■
Check the setting for the
■
changeover unit
Check and remedy the fault in ac-
cordance with message on charg-
ing controller
Check system pressure
■
Consult a qualified electrician
■
Immediately leave the boiler
■
room and ensure ventilation
Consult Viessmann Technical
■
Service
Check and remedy the fault in ac-
cordance with message on elec-
trostatic filter control unit
Consult a qualified electrician
Consult a qualified electrician
Consult a qualified electrician
Consult a qualified electrician
Consult a qualified electrician
Consult a qualified electrician
Consult a qualified electrician
Consult a qualified electrician
Consult a qualified electrician
Consult a qualified electrician
Consult a qualified electrician
27