Operating Manual
UL
POWER
UL
260,
UL
350,
UL
390,
UL
520
M0310: OM 260 - 520A01 Revision No: 04
Date:
2021-11-18
Page:
9
of
23
Warning lights
The ECU provides output for two standard warning lights: Battery low (below 12.7V) and (engine)
Check light.
Note:
It is very important that your check light and battery low light is installed in accordance
with the installation manual.
Check light
Note:
The check light can be tested
by switching power “ON” to the ECU
: If installed correctly
the check light will come up for 2 seconds (only for engines with a serial number higher
than 191401) . You can do an additional test by disconnecting one of the sensors; if the
installation is ok, the check light will come up.
When there is a problem with one of the following sensors, the CHECK light will come on
•
Oil temperature sensor
•
Inlet air temperature sensor
•
Throttle position sensor
•
Altitude sensor (Integrated in ECU)
•
Hall sensor engine start (Sync/CPS)
Attention:
In the event of the check light coming on, the engine will continue to run, however,
it may not be running optimally due to the use of default values in the ECU-map.
This might increase the fuel burn. Continue the flight and resolve the issue before
next flight.
Battery low
If the voltage at the ECU drops below 12.7 volts, the
‘Battery low’
LED will come on. It will
disappear again when 13V is reached.
Battery low
Check light
