ECU (Engine Control Unit) Set Up
The ECU supplied is a special software version of the FADEC Autostart made by Xicoy Electronica SL. It is a
reliable unit and is supplied programmed for the Merlin 90. The engine has already been set up and tested using
the ECU and pump supplied so there is very little to adjust in order to get the engine running. Confirm you have
connected the ECU input to the throttle channel of your receiver, the ecu battery is fully charged and connected
and the Data Terminal is plugged into the ECU. Remove all rates, mixes and throttle travel settings in the
transmitter. The setup assumes the use of a transmitter with manual trims.
If you use a TX with digital trims, is essential to use the switch in the TX programmed for the function
“Throttle cut”, or “engine cut” which normally has the effect of producing the “trim-down” function.
Check your radio manual for this before you start. DO NOT use the digital trim in any case.
Aligning transmitter with ecu
As the display does not photograph well we have reproduced the display readings as a green box. Turn on the
transmitter and receiver. The opening screen should show as below: (If the temp’’ probe is not connected it will
show as 0ºC). “T” = ambient temp’.
Trim Low
RPM 00000
T=020ºC
PW 000
Note there are four buttons on the display, two on the left and two on the right hand side. The left buttons move
to the different screens and the right buttons are used to change the values stored. Press the second, left button
and scroll through the menus until you find the one showing:
Info Run
Start Radio
Press the (-) button and the ecu will show the “Radio” parameters menus.
Transmitter
adjust
yes
Press the (right hand button (+) to confirm that you really want to program the radio.
The screen will change to:
Stick Up Trim Up
(Full power)
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