Select your product to confirm this information applies to you
Blink Codes on a Garmin Autopilot ECU and CCU
The Garmin autopilot systems have status lights on the CCU and, if available, the ECU. The blink codes and an explanation of their meanings are listed in the tables below.
GHP 10, 12 and 20 CCU
| Constant Red | The unit is in Boot Block Mode. |
| Slow Red Blink | The unit is in *Comm Only Mode. |
| Slow Green Blink | The unit is in Normal Mode. |
*If the ECU 10 is in Comm Only, there may be an error on the Chartplotter or GHC that states ECU Not Present. The following troubleshooting steps may resolve the problem:
Ensure that the ECU 10 and the Reactor 40's NMEA 2000 power source are sharing a common ground
Try performing a software update, see FAQ
Inspect and or replace the interconnect cable
Repeat the software update
If the slow red blink continues, contact Product Support
GHP 10, 12, ECU 14, and 20 ECU
| Slow Red Blink | The unit is in Force Update Mode. |
| Slow Green Blink | The unit is in Normal Mode. |
| Fast Green Blink | The unit is in Loader Mode (Loading Software) |
| Fast Red Blink | The unit System Software is Corrupted |
| Red/Green Blink | The unit System Software is Missing |
GHP Reactor CCU
| Constant Red | The unit is in Force Update Mode |
| Slow Orange Blink | The unit is in Force Update Mode |
| Slow Green Blink | The unit is in Normal Mode |
| Fast Orange Blink | The unit is in Loader/Test Mode |
GHP Reactor ECU
| Slow Red Blink | The unit is in Forced Update Mode |
| Slow Green Blink | The unit is in Normal Mode |
| Fast Green Blink | The unit is in Loader/Test Mode |
| Fast Orange Blink | The unit System Software is Missing |
| Fast Red Blink | The unit System Software is Corrupted |
SmartPump ECU
| Off | Off: no Power Off: accessory on - the line from CCU not asserted The unit is in a test mode with LED off The software has stopped running |
| Solid RED | The unit is in a test mode with the red LED on The software has stopped running |
| 1 blink RED/1 second Off | The unit is in boot block mode |
| Solid GREEN | The unit is in a test mode with the green LED on The software has stopped running |
| 1 blink GREEN/1 second Off | The unit is in normal mode (ECU is ready for use) |
| 6 blink RED/ 2 blink GREEN | Communication issue between the ECU and the CCU. First replace the interconnect cable/extension cables. If replacing cables doesn't resolve the issue then replace the CCU. |