AEG 8000012364 BAL ユーザーズマニュアル

"UniVert 2" inverter 

 

Page 30 of 42 

8000012364 BAL, en 

No Output Voltage or Output Current Present 
(with connected load) 

Individual INV operation: 
•  DC present and correct polarity? 
•  Are the LCD and the fan working? (Control unit is supplied with 

power) 

•  Is the INV switched on? 
•  Is the miniature circuit-breaker F1 switched on? 
•  Has a monitoring system responded? 

(Switch the INV OFF and back ON) 
With INVs in parallel operation: (additionally) 
•  LCD shows output voltage but no current: 

AC fuse faulty? Check output voltage of the unit 
INV does not synchronise and does not switch on the output 
contactor 

For systems with SBS: (additionally) 
•  LCD shows output voltage but no current: 

INV does not synchronise and does not switch on the output 
contactor 
Is the SBS blocked? 

 

If all aforementioned points are OK, proceed as follows: 
•  Disconnect the unit and disassemble it (see chapter 5.4) 
•  Unscrew the cover 
•  Observe the safety instructions! 
•  Check fuse F1 on printed circuit board A3.1 (softstart) 
•  Check fuse F100 on printed circuit board A17 

(INV interface, auxiliary power supply) 

•  Check fuse F1 on printed circuit board A17 

(INV interface, 24 V for fan, relay, INV control) 

•  Check plug connections for correct position 
 

It the fault cannot be eliminated, return the unit to the works for repair 
enclosing a fault description. 

•  Did the INV cause the output voltage deviation? 
•  Is the unit running with current limiting due to overload? 

Reduce the load!