Viessmann VITOLIG 300 Service Instructions Manual page 23

Fault messages
(cont.)
Display Explanation/Cause/Effect
indication
In 581 Hopper almost empty (the level
switch has responded).
The boiler continues to heat
until the remaining fuel has
been used up.
In 582 Hopper empty; burner blocked.
In 595 The combustion chamber door
is open.
The boiler completely burns the
available fuel.
Fault messages resulting in a shutdown
These fault messages are indicated by code "AL".
After the relevant fault has been removed, press the reset button prior to start-
ing the boiler again.
Display Explanation/Cause/Effect
indication
AL 005 Grate shaker blocked
Grate shaker motor or limit
switch faulty.
The boiler completely burns the
available fuel.
AL 006 Supply auger motor faulty.
The boiler completely burns the
available fuel; the induced fan
is switched off immediately.
AL 016 Impeller of the induced fan con-
taminated.
Induced draught fan faulty.
Set speed cannot be achieved.
The boiler completely burns the
available fuel.
Troubleshooting
Remedy
Start the pellet supply or wait for/
change the enable time.
Start the pellet supply or wait for/
change the enable time.
Close the combustion chamber
door.
Remedy
Clean the burner pot (see
page 12).
Replace motor or limit switch.
Replace motor.
Clean the impeller (see
page 13).
Replace fan motor.
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