UK Sunny Boy Inverter

[southgate]

I have "grid failure, check fuse, 801" on my sunny boy inverter. I want to switch it all off and switch it back on again but cannot remember in which order I do this. There is a red knob to the left "solo pv system" and a black knob to the right "pv array". Which knob do I turn off first please and when I have left it for a while, which order do I turn the knobs back on. Thanks very much for any help, much appreciated.

 

[Dabbers]

Sounds Very much like an internal fuse in the inverter best get the whole system checked and post what the outcome is sorry i'm not any closer

 

[southgate]

Sounds Very much like an internal fuse in the inverter best get the whole system checked and post what the outcome is sorry i'm not any closer

Managed to find local reliable company, inverter all checked and ok, checked rotary isolator, found poor connection, cable charred and contact melted, rotary isolator replaced and circuit tested, all up and running - thanks very much for all your help and support, best wishes.