Evolution Autopilot ACU-400 LEDs

[vickihoward]

Hello Forum.
We just applied external 24 volt power to the autopilot ACU-400 for the first time. The EV-01 sensor has a green light. On the ACU-400 we see a red light at the ON side of the SeaTalk power switch in the ON position and we see a yellow light at the 24v side of the clutch 12v/24v selector switch in the 24 volt position. We have not tried to turn on the autopilot with the P-70 control unit. What do the red and yellow LED lights on the ACU-400 mean? We can't find the explanation of the ACU-400 LEDs in the installation manual.
Vicki & Porter Howard
s/v Cinnamon Teal

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Viki and Porter,

The defined ACU Status LED Codes may be seen below:



The red light at the ON side of the SeaTalk power switch in the ON position is a visual indicator that the ACU had been configured to supply power to the SeaTalkng / NMEA 2000 backbone. When configured OFF, this LED will be illuminated green. Similarly, LEDs are provided on either side of the ACU400's Clutch 12V/24V switch to provide a visual indication of the position of the switch. Should the switch be configured to 24V , then the LED located on the 24V side of the switch setting will be ON and illuminated yellow, while the LED located on side of the 12V switch setting will be OFF. Similarly, should the switch be configured to 12V , then the LED located on the 12V side of the switch setting will be ON and illuminated yellow, while the LED located on side of the 24V switch setting will be OFF.

[vickihoward]

Thank you Chuck for your reply and the explanation of the LEDs.
Apparently our observations are normal for our setup.
It is very helpful support.
Vicki and Porter Howard
s/v Cinnamon Teal

[Chuck - Raymarine - Moderator]

You're welcome.