Uu Error Message On Toyodenki Vf61v Inverter

[George]

Dear Sirs,

 

Pls, help !

 

When I swich on the machine ( this not mean the inverter) relays in inverter start clicking. In this state I push MON button and DC out varies, all other parameters are zero.

After this I activate the invertor with REM driving circuit and inverter displas uU error.

I check power terminals and voltage...no problem...

After this I pushed RST , display showed "0" and when I tried again the same situation.

 

Does anybody have an idea whats happend?

 

Thanks in advance.

George.

P.S. If anyone have detail electric circuit diagram of inverter I will be appreciate.