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www.balmar.net / Customer Service: +1 (360) 435-6100 x1 / Technical Support: +1 (360) 435-6100 x3
Tech Service is available Monday - Friday (8:30am - 7:30pm EST)
Digital Duo Charge Troubleshooting
Symptom
Cause/Solution
No Lights/No Output
1. No voltage at input wire or ON/OFF wire – Check wiring and repair.
2. Bad fusing on input wire – Replace 30A fuse in input cable.
3. Voltage too low at house battery bank – Check house battery charging system.
4. Starting battery demanding >30A – Install solenoid and manual over-ride switch. Check grounding.
5. Bad Duo Charge unit – Contact Balmar Customer Service at 360-435-6100 or at [email protected].
Interference at radio, autopilot or
navigation equipment when Digital
Duo Charge is active
1. Input, Output or ON/OFF wires causing interference – Re-route wiring. Check system grounding.
2. Output wire is coiled – Uncoil any surplus wire and re-arrange to ensure noise is reduced.
3. Duo Charge is mounted too close to electronics – Relocate Duo Charge.
4. Frequency interference – Install noise reduction filter on electronics power wire.
Output voltage is not appropriate for
battery type selected
1. Wrong battery program selected – Verify program and re-program as described above.
2. Voltage drop in output cable – Check wiring resistance and repair as needed.
3. Voltage drop in input cable – Check wiring resistance and repair as needed.
4. Voltage drop in output cable – Check wiring resistance and repair as needed.
No Output. #4 LED blinks once inter-
mittent
1. High system temperature – Determine source of overheating and repair.
No Output. #4 LED blinks twice inter-
mittent
1. Start battery voltage too high – Inspect starting battery for secondary charge sources and correct.
No Output. #4 LED blinks three times
intermittent
1. House battery voltage too low – Correct charging source for house battery bank.
2. House battery voltage too low – Check wiring resistance in Input wire and repair as needed.
No Output. #4 LED blinks four times
intermittent
1. House battery voltage too high – Correct charging source for house battery bank.
No Output. #4 LED blinks five times in-
termittent
1. Start battery temperature too high – Shut down system. CAREFULLY inspect starting battery for signs of
overheating. Repair condition and/or replace starting battery.
2. Bad Temperature Sensor cable – Check wiring resistance (approx. 34-40k). Repair or replace Temperature
Sensor cable.
3. Bad system grounding – Test ground-side resistance between batteries and charging system. Repair.
No Output. #4 LED blinks six times in-
termittent
1. Voltage too low at ON/OFF terminal – Repair or relocate ON/OFF wire.
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