PURE SINE WAVE INVERTER WARNS NO FEEDBACK

Dear members, I need help, my PSW 24v 2200w inverter warns no feedback and turns off. It was working well but as I was trying to clean at the top of the batteries unfortunately I a little shorting on the batteries and letter the inverter displayed no feedback. I have tried to test different components they seem to be OK.
What could be the problem? Help pls

PSW is a manufacturer or "Pure Sine Wave"?

There are hundreds of models, you will have to give far more detail if you want us to help.

Brian.

It sounds like you have broken the sense connection for the
controller (either a physical open circuit, or one of those sparks
found itself a little snack on the control board).

Fault responses can be difficult to debug if you can't force your
way past the failsafes (and should you, if you know little about
what you're poking?).

Might root around for model number and "schematic" through
the usual search engines, could see if there are connectorized
signals which look like they bring a remote line voltage back
to the board and chase that wire, see if it's close to observed
"action" and any physical issues reveal themselves.