Deye F42 fault: Grid voltage low

What it means

The grid voltage dropped below what the inverter accepts. This is usually a municipal supply issue rather than a problem with your system.

Likely causes

• Low municipal voltage in the area
• Grid recovering after load-shedding

What you can safely check

1. Ask neighbours whether they also have power problems and check municipal notices.
2. Check whether load-shedding or a municipal outage is affecting your area.
3. If it keeps coming back, stop and call a qualified installer.

When to call a pro

If it doesn't clear on its own, happens often, or comes with burning smells, heat or noise, call a qualified installer.