REFUsol 20K-2T (853P020.200)
User manual
disconnect the DC switch of the
inverter, wait for 5 minutes, and then
turn on the DC switch. Observe
whether the fault has been
eliminated after the inverter is
restarted. If not, please contact the
customer service of REFU
ELEKTRONIK.
Inverter shows ID83 when remote
derating. If no one operate this
function, please check the
connection (I/O) according to chapter
4.5
Logical interface
derating
Check whether the inverter has dust
and dust, whether there are foreign
matters blocking the fan at the air
inlet. If so, please improve the
ventilation and heat dissipation of
the environment. It is recommended
that the inverter should be cleaned
once every half a year.
String fuse open
circuit alarm
There are internal faults of inverter,
turn OFF the “DC switch”, wait for 5
minutes, then turn ON the “DC
switch”. Check whether the fault is
rectified. If no, please contact
technical support.