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SYSTEM OF ADDITIONAL TREATMENT OF EXHAUST GASES
Error signalling of SCR system
Defects of the SCR system when the engine is running
are indicated by glowing of the red (1) or orange (2) signal
lamp on the instrument panel and by the subsequent
acoustic signal. If the error is not eliminated, it is indicated
every time when the engine is started. The reason for the
indication may be in not meeting the required amount of
NOx in exhaust gases, defect of the urea injection system
or bad urea quality. According to the severity of the error
message, the warning signal lamp (4) or the stop signal
lamp (3) are activated together with the signal lamps (1,
2).
If there is an unprofessional intervention in the
system of selective catalytic reduction, an error is
indicated and the system is switched into an
emergency operation mode of the tractor with
a reduced engine power.
type of
urea signal lamp
indication
signal lamp colour
warning
1st degree
of limitation
2nd degree
of limitation
Error messages with the signal lamps and acoustic signal
are accompanied by indication on the display of the
instrument panel.
1 - The symbol of the defect significance.
2 - Node of the tractor where the defect appeared.
3 - Main display field - defect code.
4 - Secondary display field - defect specification.
5 - Service symbol.
Note: More information in chapter Instrument Panel
defect
signal lamp
orange
orange
red
acoustic
reduction of the engine power and
signal
engine revolutions
1 x 1 s
1 x 1 s
reduction of power by 25%
2 x 3 s
reduction of power by 50%,
reduction of max. engine
revolutions to 1,250 rpm
79
P18N029
P18N031
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