Redx 2505 PU, User Manual, Page: 25 / 32

The charge and
discharge current of
the battery is too high
Grid over frequency
Grid underfrequency
Battery over current
Relay fault
Bus soft start failed
Bus voltage setup timeout
The inverter
soft start failed
EEPROM read failure
Fan fault
Output overload
Components over
temperature
The communication
between the host
computer is error
DSP communication
error
Load short circuit Output short circuit Output short circuit
1.The address and baud
rate are incorrectly set.
2.The communication
cable is loose
1. The inverter installation
location is not ventilated.
2. The ambient
temperature is too high.
3. The fan is faulty.
O verload
The fan is faulty
EEPROM read fault
Inverter output setup timeout
Detect the fault of relay
automatically switches to
the off-grid mode. When
the error disappears, the
inverter automatically
res umes to the grid mode
range of converter protection parameters,please
report to the power grid company .
2. If the power grid voltage or frequency is within the
permissible range, contact the installation partner .
1. Check whether the battery voltage and
capacity exceed the allowable range
of the inverter.
2. If the alarm is repeated, contact
installation partner .
1. Wait for the inverter to recover automatically.
2. If the alarm is repeated, contact installation
partner .
1.
2.
Wait for the inverter to recover automatically.
If the alarm is repeated, contact
installation partner .
1. D isconnect power and restart the system
；
2. If the error remains, contact installation
partner .
1. Check whether the fan runs properly. Power
off to restart the module;
2. If the error message still exists, contact
installation partner .
1. Remove some loads. Ensure that the load
is smaller than the maximum output power
of the inverter.
2. Restart the inverter
1. Check whether the operating environment
exceeds the operating temperature range
of the inverter. If yes, improve the operating
environment.
2. Check whether the fan is in good condition
1. Check the communication address and
baud rate Settings (please change the
baud rate to 2400);
2. Check whether the communication cable
is loose.
3. Contact installation partner .
Table 8 - 2 - Fault information table 2
Rev 20220610 RX2505PU Page 25 of 32