Step-by-Step Troubleshooting
Start with the symptom, follow the exact field checks, and separate normal charger behaviour from faults that need service.
What is the charger doing?
Normal Behaviours That Often Get Mistaken For Faults
Not every unusual-looking behaviour is a charger failure. These are common and often expected.
Charge complete restart
NormalIf the charger restarts briefly after reaching full charge, that can be normal maintenance mode topping up self-discharge losses.
Very low current (2-5 A)
Check Pack VoltageA deeply discharged pack can enter trickle recovery. Low current at the beginning of the cycle is not automatically a fault if pack voltage is extremely low.
Single relay click
Watch CloselyOne click at charge start or charge stop is normal. Repeated clicking usually points to pack voltage, BMS state, or activation retry issues.
General Pre-Checks
Before Any Deeper Fault Search
Do Not Attempt In The Field
- Opening, repairing, bypassing, or modifying the charger in the field
- Using the charger in rain, direct water flow, or with wet connectors
- Using a damaged cable, damaged plug, or cracked enclosure
- Using a private generator or unstable AC source
- Using the wrong charger or wrong charging profile for the battery
- Covering vents or continuing operation during smoke, burning smell, or abnormal sound
- More than 3 activation attempts on the same deeply discharged battery
When To Contact Support
Quick Contact
Escalate Immediately If:
- Relay fault, PFC internal fault, DC internal fault, or any repeated internal fault
- Smoke, burning smell, repeated abnormal sound, or visible housing or cable damage
- Activation fails after 3 correct attempts with 30-second AC-off rest between tries
- Repeated thermal fault in good ventilation and normal ambient temperature
- Battery-side smell, water loss, or evidence of a wrong charging profile
Warranty Summary
3 Years / 50,000 km - whichever comes first| Covered | Excluded |
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More Diagnostic Paths
Keep moving between the support guides below to narrow the issue faster.
LED Fault Codes
Review Solterra LED fault codes, match blink patterns, and use the interactive simulator and reference table.
Activation / Wakeup Function
See how Solterra chargers wake deeply discharged batteries and what risks apply during activation.
How the Charger Works
Understand the AC input path, PFC stage, DC-DC stage, relay, and thermal controls.