Error signalling of SCR syste
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.
P18N029
type of
indication
urea signal lamp defect
signal lamp
acoustic
signal
reduction of the engine power and
engine revolutions
signal lamp colour
warning orange 1 x 1 s
1st degree
of limitation
orange 1 x 1 s reduction of power by 25%
2nd degree
of limitation
red 2 x 3 s reduction of power by 50%,
reduction of max. engine
revolutions to 1,250 rpm
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
P18N031
SYSTEM OF ADDITIONAL TREATMENT OF EXHAUST GASES
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