What you will see
- Battery not charging or not giving backup
- F124, F126, F127 or F152
Why it happens
Wrong polarity at installation, a battery switched off or faulty, heat, or a deeply drained battery.
Diagram
Battery fault codes
Wiring
F124 / F125 reversed. F126 abnormal input.
Condition
F127 over-temperature. F152 voltage below shutdown.
What you can check yourself
- Check the battery is switched on
- Keep the battery space ventilated
- Let it recharge after long outages
What not to do
- Do not open battery terminals
When to call us
- Check polarity and cables
- Read BMS data
- Contact the battery maker if faulty
Battery checks
We check GoodWe batteries and pairing in Faisalabad, Lahore and across Punjab.
Send us
inverter and battery models and the alarm