Original Sigma Controller
The existing Sigma controller was flashing a critical fault code and the boat would not run in forward or reverse.
← All ProjectsProject Case Study
Duffy Controller Diagnostics & Alltrax Upgrade
A Duffy boat with no forward or reverse operation was diagnosed with a critical Sigma controller fault. The potted controller could not be properly refurbished, so EBR upgraded the system with a rebuilt Alltrax controller and throttle setup to restore reliable operation.
Project Gallery
Highlights from Sigma fault diagnosis, Alltrax upgrade, and propulsion testing.
Controller Upgrade In Progress
After confirming the potted Sigma unit was not a good internal repair candidate, the controller and throttle setup were rebuilt for the Alltrax upgrade.
Alltrax Controller Installed
The new Alltrax controller system was installed, connected, and tested for smooth forward and reverse operation.
Project Snapshot
- Boat
Duffy Electric Boat
- Service
Controller Diagnostics & Alltrax Upgrade
- Location
Orange County, CA
- Completion Time
Same-Day Diagnosis + Scheduled Upgrade
- Status
Completed
- Project TypeElectrical Propulsion Repair
- Boat ModelDuffy Electric Boat
- Service DurationDiagnosis + Controller Upgrade
- LocationOrange County, CA
The Problem
The customer contacted EBR because their Duffy boat would not run in forward or reverse. During dockside diagnostics, the existing Sigma controller was found flashing a critical error code.
Because this style of Sigma controller is potted, it could not be properly refurbished internally in a reliable way. EBR reviewed the findings with the customer and recommended replacing the failed unit with an Alltrax controller upgrade.
Inspection Findings
- No Forward Operation
- No Reverse Operation
- Sigma Critical Fault
- Potted Controller
- Throttle System Review
- Upgrade Recommended
Upgrade Process
Step 1
Dockside Diagnostics
Forward and reverse operation were tested, wiring was inspected, and the existing Sigma controller fault code was documented.
Step 2
Controller Evaluation
The Sigma controller was evaluated and confirmed to be a poor refurbishment candidate because the internal components were potted and not serviceable in a dependable way.
Step 3
Alltrax Controller Build
A replacement Alltrax controller setup was prepared along with the required throttle configuration and wiring connections.
Step 4
Installation & Testing
The upgraded controller system was installed, forward and reverse operation were tested, and the boat was returned to reliable harbor use.
Results
- Forward Restored
- Reverse Restored
- Alltrax Controller Upgrade
- Throttle Rebuilt
- Reliable Harbor Operation
Project Outcome
The failed Sigma controller was replaced with an upgraded Alltrax controller setup, restoring both forward and reverse operation. The throttle configuration and wiring were reviewed as part of the installation to help ensure dependable control response.
After testing, the customer had a smooth-running Duffy boat again with a more serviceable controller platform for future support.
Serving Huntington Harbour, Newport Beach, Long Beach, Dana Point, and surrounding Southern California marinas.
Need Controller or Throttle Help?
If your Duffy will not move, is flashing controller faults, or has inconsistent throttle response, EBR can diagnose the system and recommend the right repair or upgrade path.