Inverter/UPS Not Switching to Battery Backup
A Inverter/UPS with the "Not Switching to Battery Backup" fault usually shows it through connected appliances shut off completely during a power cut instead of running on backup, a delay of several seconds before backup kicks in, if at all, and the display shows mains status even though there is no mains power. This is typically traced back to a failed changeover relay, a faulty battery unable to sustain load, and a sensing fault on the control board. A technician resolves it by testing the changeover relay and battery under simulated power-cut conditions and repairing the sensing circuit.
Symptoms
- Connected appliances shut off completely during a power cut instead of running on backup
- A delay of several seconds before backup kicks in, if at all
- The display shows mains status even though there is no mains power
Likely causes
- A failed changeover relay
- A faulty battery unable to sustain load
- A sensing fault on the control board
How it's repaired
Testing the changeover relay and battery under simulated power-cut conditions and repairing the sensing circuit.
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Other Inverter/UPS issues
Frequently asked questions
Why is my Inverter/UPS not Switching to Battery Backup?
The usual causes are a failed changeover relay, a faulty battery unable to sustain load, and a sensing fault on the control board.
How is this fixed?
By testing the changeover relay and battery under simulated power-cut conditions and repairing the sensing circuit.
Can this be repaired at home, or does it need the workshop?
Most cases of not Switching to Battery Backup in a Inverter/UPS are fixed on-site; if bench-level work is needed, the unit can be brought to the workshop instead.
Which areas is this repair available in?
Yeshwanthpur, Mathikere, New BEL Road, Gokula, and Sanjaynagar. Call 74112 25242 to arrange a visit.
Ready to get this fixed?
Same day visits · 9:00 AM – 9:00 PM, All Days · All brands