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To view the error log launch RCT Power App and go to the
“HISTORY”
menu. Then press the symbol.
The errors are displayed by type and time of occurrence. Tap the error to show duration and error description.
Error message
Description
Cause and possible corrective action
TRAP
General error, causing switch-off of invert-
er. Occurs always with additional single
fault.
Please refer to instructions on addi-
tional single fault
HW_STOP_UZK
Overvoltage occurred in DC-link. Inverter
stops feeding.
DC-link-voltage is out of permissible
range. Switch of inverter (DC and AC)
for about 15 min. and check PV-voltage.
If error still occurs, contact technical
hotline
U_ZK_UNDERVOLTAGE
Undervoltage occurred in DC-link. Inverter
stops feeding.
DC-link-voltage is out of permissible
range.
Check PV-voltage and ask grid provider
about grid stability.
If error still occurs, contact technical
hotline
U_SG_A
U_SG_B
Your power storage is approved for a max.
open-circuit solar generator voltage of
1000 V.
All components are sufficiently dimen-
sioned with a safety factor.
If the threshold is exceeded, the Power
Storage stops feeding.
Max. allowed DC-voltage was exceed-
ed:
Check dimensioning of PV-generator.
Reduce the number of modules in se-
ries and carry out commissioning again.
U_ACC
The battery voltage is outside of the ex-
pected range.
Check the parameters and the connec-
tion to battery.
If error still occurs after reboot, contact
technical hotline.
THROTTLE_L1_OVERCURRENT
THROTTLE_L2_OVERCURRENT
THROTTLE_L3_OVERCURRENT
Overcurrent in throttle of phase L1 / L2 /L3
occurred.
Error could be caused by grid interrup-
tion or problems with cabling of PV-
generator.Please restart inverter.
If problem occurs permanent or very
often, please contact service.
BAT_OVERCURRENT
Your power storage continually monitors
charge/discharge current.
When the maximum permissible limit ex-
ceeded, Power Storage stops
charge/discharge.
If the error occurs multiple times, check
configuration of battery in APP.
If error still occurs after reboot, contact
technical hotline.
BAT_EMPTY
Your power storage continually monitors
battery voltage level.
When the minimum permissible limit of
battery voltage is dropped below, storage
inverter stops discharging.
Battery will be charged, if there is
enough power from PV-generator.
Check battery connection, if error still
occurs, contact technical hotline.
BAT_OVERVOLTAGE
Your power storage continually monitors
battery voltage level.
When the maximum permissible battery
voltage limit is exceeded, Power Storage
stops charging.
If error occurs for a long period of time,
contact technical hotline.
UL_UNDER_L1_LV1
UL_UNDER_L2_LV1
UL_UNDER_L3_LV1
Your power storage continually monitors
voltage level of grid.
When the minimum permissible limit of
level1 is dropped below, Power Storage
stops feeding.
Check grid voltage level and / or ask
grid provider about grid stability.
UL_UNDER_L1_LV2
UL_UNDER_L2_LV2
UL_UNDER_L3_LV2
Your power storage continually monitors
voltage level of grid.
When the minimum permissible limit of
level2 is dropped below, Power Storage
stops feeding.
Check grid voltage level and / or ask
grid provider about grid stability.
UL_OVER_L1_LV1
Your power storage continually monitors
voltage level of grid.
Check grid voltage level and / or ask
grid provider about grid stability.
