Fronius TransSynergic 5000 - Nothing Happens on Control Panel (TPS 3200;4000;5000)

20
Nothing happens
on control panel
(TPS 3200/4000/
5000)
Start
3x230V/3x400V on
the terminal strip X7/5
- X7/7 OK?
Check mains cable,
line filter and supply
voltage
No
Voltage on intermedi-
ate circuits 1 and 2 >
200V DC?
Change primary
rectifier
Mains switch/cabling
OK?
Check/change mains
switch and cabling
Change BPS
Steady +24V int/ext
LEDs on UST?
Switch power source
off, unplug plug X3
from UST, switch
power source on
Change NT 24
Yes
Yes
Steady +24V int/ext
LEDs on NT 24?
Switch power source
off, plug X3 plug into
UST and unplug X7,
switch power source
on
No
Yes
No
Yes
No
Yes
A
Voltage present on 2
phases of rectifier
V1?
Yes
No
LED 230V flashing on
ASU 40 at U
nom
230V?
Change ASU 40
No
Yes
MV power sources
with U
nom
230V
No
No
B