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17.
Low RPM: Engine had been shutdown because the speed has fallen below the minimum.
Usually lack of fuel (bubble)
18.
HighTemp: Excessive temperature
19.
Battery!: battery voltage out of limits, or not connected.
20.
Pump Overload: There is a restriction in the fuel path from the pump to the engine, or in the
engine itself.
21.
No Data: Means that the data terminal is not receiving any data from the engine. Usual causes
are battery disconnected, Data Terminal in wrong port, throttle lead connected in wrong port, pump
lead reversed.
Diagnoses
During engine operation the ECU measures and stores all the engine operating parameters recorded
during the last the 51 minutes of operation. These measures can be downloaded later to a PC to study
the behaviour of the engine in flight and to diagnose any possible problems. Also, after each cycle of
operation, the ECU stores the last cause of shut down and the values of RPM, temperature and pump
power.
In order to access these measures, it is necessary to shut down and power-up the ECU. Set the trim
down (TrimLow) and push the left button on the display. The ECU will show the cause of last shutdown
and the parameters value at the moment of shut down. These are as follows:
Diagnosis messages
1. UserOff: The engine has been shut down because it has received the shut down command from
the transmitter.
2. FailSafe: The engine has been shut down because of loss of the control signal from the
transmitter. After 0,5s of detecting a loss or invalid RC signal, the ECU sets engine power to idle,
and if after another 1,5seconds a valid signal is still not received the engine is shut down.
3. LowRPM: The engine has been shut down because the RPM has dropped below a minimum.
Cause could be lack of fuel, air bubbles, problem with the batteries, or defective RPM sensor.
4. RCPwFail: Lack of power from the radio receiver.
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