Must Energy Guangdong Technology error codes
Must Energy Guangdong Technology inverter error code F21
WattMate is not affiliated with Must Energy Guangdong Technology. This page summarises Must Energy Guangdong Technology's own published documentation; your installer and Must Energy Guangdong Technology are the authority on your system. WattMate doesn't repair systems or make site visits.
What it means
- Meaning
- BUS over current
- Likely cause
- Check the PV input current and battery current setting
- What the manual says to do
- Restart the system 2-3 times; Contact support if the fault persists.
- Manufacturer's severity
- Critical
Must Energy Guangdong Technology's documentation says this one needs your installer.
Extracted from Must Energy Guangdong Technology's published manual. Check it against the manual for your model. Open the source document
When to call your installer or the warranty line
Your installer is your first warranty contact. If they've gone, the manufacturer's warranty line still covers the hardware. Don't open the inverter or battery case yourself: work inside it is for a licensed electrician.
If you see smoke, scorch marks or smell burning, switch the system off at the AC and PV isolators and call your installer. If anyone is in danger, call 000.
We don't have a warranty line on file for Must Energy Guangdong Technology yet. See the manufacturer contacts we do hold, or ask your installer.