Check for incorrect charger settings or excessive downhill regenerative braking. 6. Preventative Maintenance
Complete Guide to the Curtis 3501 Controller: Installation, Wiring, and Troubleshooting curtis 3501 manual
Always disconnect the main battery pack positive (+) and negative (-) cables before working on the controller. Check for incorrect charger settings or excessive downhill
Many Curtis 3501 variants feature a status LED or interface directly with a Curtis 1311/1313 handheld programmer. The built-in LED flashes a specific sequence to indicate system faults. A single digit or two-digit flash pattern indicates the system state (e.g., Flash-Pause-Flash-Flash represents code 1-2). 0–5V voltage throttles
5kΩ–0 resistive throttles, 0–5V voltage throttles, or ITS (Inductive Throttle Sensor) inputs. Operating Temperature: -40°C to 50°C (-40°F to 122°F). 2. Installation and Safety Guidelines