check to make sure you have the Correct Hz set for washing machines as they are VERY pedantic to incorrect Hz settings Usually 110 inverters should be set to 60 Hz and 220 units 50hz.
but as a example some machines can be 220 but setup for 60z
I think this wiull be the area you will need to look at
Inverter efficiency curves 0 Answers
Solid red Alarm light 1 Answer