User Manual
5.3 Setting the parameters of battery On PV Master app
5.4 Observing the indicator status
LED Indication
SOC Indicator
Operation
Indicator
Green, Blink 1s
Green, Blink 10s
Green, Blink 3s
Red, Blink 3s
Standby
Working
Alert
Faulty
Operation Indicator(SECU-A5.4L)
Green light blink 1 time in 1second
Steady green
Red light blink 1 time in 1second
Standby
Working
Alert
Operation Indicator(SECU A5.4-20)
SOC < 5%
5%≤ SOC ≤25%
25%≤ SOC ≤50%
50%≤ SOC ≤75%
75%≤ SOC ≤95%
95%≤ SOC ≤100%
Operation Indicator
Operation LED
Green Blink
3 seconds
SOC LED Warning Description
Cell Temperature Difference
Battery High Temperature
Discharge Under Low Temperature
Charge Overcurrent
Discharge Overcurrent
Battery Over Voltage
Battery Under Voltage
Charge Under Low Temperature
Operation LED
Red
Blink
3 seconds
SOC LED
To make sure the battery communicates to inverter unit successfully, users have to use PV
Master to choose the right battery option on PV Master:
APP Installation And Connection:
Connect phone & Inverter
Wi-Fi SSID: Solar-WiFi***
Password: 12345678
Download
and install
PV Master
Note: If Battery Under Voltage happens during working status, by pressing battery switch for 5
times in 10 seconds, BMS will compulsively close MOS, so that inverter will detect battery open
circuit voltage to charge battery.
Select “SECU-A5.4L” or “SECU A5.4-20”on battery page in PV Master Application
Notes:
1. Select wrong battery will lead to BMS communication failure
2. Select wrong number of batteries the input and output current will be limited and the parameter
indicated by the inverter is inconsistent with the actual value of the battery.
3. For the complete commissioning of the whole ESA system, please go to ESA instruction.
Select Battery on PV master
6. Error Code and Warning Code
Select Battery Model
GoodWe
BYD
GCL
LG
PYLON
DYNESS
AlpahESS
eSTORE
Temperature Sensor
Failure
MOS Fault
Breaker Open
No Series Number
Firmware Inconsistency
Multi Master Unit
MOS Over temperature
Error Description Solution
Reboot battery or contact aftersales
Reconnect communicatioin cable
Contact aftersales
Reconnect communication cable
Contact aftersales
Turn off battery for 2 hours
DIP Switch Status
difference
Turn Off battery and contact
aftersales
Keep same of DIP switch status and
reboot battery
Turn off and reboot all batteries in
30s
Slave Communication
Loss
Master Communication
Loss
play
App Store
Error Status
Warning Status
SECU-A5.4L*1 or SECU A5.4-20*1
SECU-A5.4L*2 or SECU A5.4-20*2
SECU-A5.4L*3 or SECU A5.4-20*3
SECU-A5.4L*4 or SECU A5.4-20*4
SECU-A5.4L*5 or SECU A5.4-20*5
SECU-A5.4L*6 or SECU A5.4-20*6
SECU-A5.4L
Steady red or Red light blink 1 time
in 1second
Faulty
07
08