What you will see
- 2002 and the inverter stops
- Burn marks on connectors
- 2021 at start-up
Why it happens
Loose, wet or mismatched DC connectors heat and spark.
Diagram
Repair first, then restart
Good connection
ConnectorTight, dry
→InverterRunning
Loose or burnt
ConnectorArcing
→Inverter2002, stopped
2021 means the arc detector's self-check failed.
What you can check yourself
- Look for burn marks from a safe distance
What not to do
- Do not touch or unplug DC connectors
When to call us
- Inspect every connector on the named strings
- Replace damaged parts
- Warranty case if 2021 persists
Connector inspections
We inspect and replace DC connectors on Huawei systems in Faisalabad, Lahore and across Punjab.
Send us
alarm screenshots and photos of any marks