Viessmann VITOFLEX 300-UF Operating Instructions Manual page 32

What to do if...
"Warning" is displayed
No. Fault message
022 Warning: Push floor, emergency
mode enabled
023 Warning: Combustion chamber
door open
024 Warning: Bottom combustion
chamber sensor faulty
025 Warning: Top combustion cham-
ber sensor faulty
026 Warning: Negative pressure, set
value deviation
027 Warning: Electrostatic filter
028 Warning: Telenot OFF
029 Warning: Ash container removed
030 Warning: Pressure switch, extin-
guishing water pressure
031 Warning: Ash container for boiler
ash removal removed
032 Warning: Ash container for filter
ash removal removed
Adjusting the fuel supply and air supply
The boiler is commissioned by Viessmann engineers.
As part of this process, the boiler will be adjusted so
that the available fuel in conjunction with the amount of
air supplied will result in optimum combustion.
Warning
Risk of poisoning from carbon monoxide and
carbonisation gas as a result of incomplete com-
bustion caused by overfilling with fuel
Ensure that the fuel supply and air supply are
adjusted correctly.
When changing to a different fuel, have the
Viessmann engineers adjust the parameters to
suit the new fuel.
Note
Overloading the combustion chamber leads to ash
glazing on the fireproof interior lining and thereby to
premature damage to the combustion chamber.
The lining, grates and metal parts in the combustion
chamber are wearing parts. Excessively high loads will
cause the parts to wear more quickly.
Overloading the system will also have an increased
impact on the boiler, dust extractor and chimney, caus-
ing them to wear more quickly too.
Ensure that the fuel supply and air supply are adjusted
correctly.
32
(cont.)
Cause
Light barrier, transverse screw
conveyor is dirty or blocked by
woodchips
Combustion chamber door is
open
Bottom combustion chamber sen-
sor is faulty
Top combustion chamber sensor
is faulty
The set value for vacuum pres-
sure measurement could not be
reached.
Fault message from electrostatic
filter is active
Fault message relay disabled
Ash bin has been removed
Pressure of extinguishing water is
too low
Ash bin has been removed
Ash bin has been removed
Remedy
Clean light barrier or remove
woodchips, if applicable
Close combustion chamber door
Consult a qualified electrician or
Viessmann Technical Service
Consult a qualified electrician or
Viessmann Technical Service
Consult a qualified electrician or
Viessmann Technical Service
Remedy the fault on the electro-
static filter
Enable fault message relay
Fit ash bin
Consult a heating contractor or
Viessmann Technical Service
Fit ash bin
Fit ash bin
Note
The composition of the fuel may differ in terms of parti-
cle size, type of wood, moisture content, bulk density
and other characteristics.
When changing to a different fuel, have the Viessmann
engineers adjust the parameters to suit the new fuel.
This will ensure optimum combustion of each fuel type.
The combustion chamber is not overloaded and the
emission values are observed.