14
Fault code / Description of fault Comment
• Remedy
047 Dosing pump – short-circuit or overload •Disconnect connector from dosing pump, if fault code 048 (interruption)
is displayed then the dosing pump is defect, --> replace dosing pump.
•If fault code 047 is still displayed, then disconnect connection S1/B1
at
AIRTRONIC
. At connector B1, PIN 5, check line 1² green/red through
to dosing pump for short circuit to chassis (PIN 10), if OK --> replace
controller.
048 Dosing pump interrupted •Disconnect connector from dosing pump and measure resistance value
of dosing pump (values see page 9). If resistance values OK,
then reconnect cable harness to the dosing pump.
•Disconnect connection S1/B1 at the
AIRTRONIC
and measure the
resistance value between PIN 5 and PIN 10. If OK, --> replace controller.
050 Too many unsuccessful start attempts Controller is locked after too many unsuccessful start attempts
(operation blocked) (max. 255 start attempts).
•Unlock controller by deleting the fault memory with the module clock
or diagnosis instrument.
051 Flame detected when switched on If the resistance value of the flame sensor is 1274 W after switching on
(> 70 °C), then the blower of the
AIRTRONIC
runs for approx. 15 minutes
to cool down. If resistance does not fall below the above value
within 15 minutes, this is followed by a fault shut-down.
•Check flame sensor, diagrams and values table see page 28,
if OK, --> replace controller.
052 Safety time exceeded No flame detected during start phase.
•Check exhaust and combustion air lines
•Check fuel supply / measure fuel quantity, see page 32.
•Check glow plug (see fault code 020 and 021)
•Check flame sensor, diagram and values table see page 28,
if OK, --> replace control unit.
Flame aborted in
AIRTRONIC
has ignited (flame detected) and reports aborted flame
053 POWER stage in a power stage.
054 FAST stage •Check exhaust and combustion air lines.
055 MEDIUM stage •Check fuel supply / measure fuel quantity, see page 32.
056 SLOW stage •Check flame sensor, diagram and values table see page 28,
if OK, --> replace control unit.
060 Interruption external temperature •Disconnect connection S2/B2 of external temperature sensor and
sensor measure resistance value at connector B2, diagram and values table
see page 9. If temperature sensor OK, re-connect connection S2/B2.
•Disconnect connection S1/B1 at
AIRTRONIC
.
In connector housing B1 measure resistance between PIN 6 and Pin 12.
If there is an interruption, the ohmic value between PIN 6 and PIN 12
> 7175 W. If the resistance value is o.k., then the controller is defective.
061 Short circuit – external temperature •Disconnect connection S2/B2 of external temperature sensor.
sensor If fault code 060 is displayed --> check external temperature sensor,
diagram and values table see page 9.
If temperature sensor OK, --> check connection lines 0.5 green
and 0.5 brown/white for short circuit, if OK, re-connect connection S2/B2.
•Disconnect connection S1/B1 at
AIRTRONIC
. In connector housing B1,
measure resistance value between PIN 6 and PIN 12.
If there is a short circuit, the ohmic value between PIN 6 and PIN 12
< 486 W. If fault 061 continues to be displayed, the controller is defective.
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals