This is the fault code list for the SunEnergyXT 500 Series. You can cross-reference the fault code displayed in the App (e.g., A001) with this list to find the corresponding fault details and troubleshooting solutions.
Low-Voltage Side Faults
D001
Fault Description
Device self-test failed
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
D002
Fault Description
Internal communication error
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D003
Fault Description
PV1: Temperature too low
Recommended Action
Operation resumes automatically once the temperature returns to normal.
D004
Fault Description
PV1: Temperature too high
Recommended Action
Operation resumes automatically once the temperature returns to normal.
D005
Fault Description
PV2: Temperature too low
Recommended Action
Operation resumes automatically once the temperature returns to normal.
D006
Fault Description
PV2: Temperature too high
Recommended Action
Operation resumes automatically once the temperature returns to normal.
D007
Fault Description
Enclosure temperature too low
Recommended Action
Operation resumes automatically once the temperature returns to normal.
D008
Fault Description
Enclosure temperature too high
Recommended Action
Operation resumes automatically once the temperature returns to normal.
D009
Fault Description
Push-pull soft-start timeout
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
D010
Fault Description
LV DC bus: Undervoltage
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D011
Fault Description
LV DC bus: Overvoltage
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D012
Fault Description
LV DC bus: Short circuit
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D013
Fault Description
Battery discharge: Overcurrent (Hardware)
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D014
Fault Description
Battery charging: Overcurrent (Hardware)
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D015
Fault Description
Battery discharge: Overcurrent
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D016
Fault Description
Battery charging: Overcurrent
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D017
Fault Description
Boost converter fault
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D018
Fault Description
Buck converter fault
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D019
Fault Description
Charging output: Undervoltage
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D020
Fault Description
Battery charging fault
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D021
Fault Description
Battery output: Undervoltage
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D022
Fault Description
Battery output: Overvoltage
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D023
Fault Description
PV1-Input: Overcurrent (Hardware)
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D024
Fault Description
PV1-Input: Overcurrent (Software)
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D025
Fault Description
PV1-Input: Undervoltage
Recommended Action
None.
D026
Fault Description
PV1-Input: Overvoltage
Recommended Action
Disconnect PV1 and restart.
D027
Fault Description
PV2-Input: Overcurrent (Hardware)
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D028
Fault Description
PV2-Input: Overcurrent (Software)
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D029
Fault Description
PV2-Input: Undervoltage
Recommended Action
None.
D030
Fault Description
PV2-Input: Overvoltage
Recommended Action
Disconnect PV2 and restart.
D031
Fault Description
PV3-Input: Overcurrent (Hardware)
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D032
Fault Description
PV3-Input: Overcurrent (Software)
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D033
Fault Description
PV3-Input: Undervoltage
Recommended Action
None.
D034
Fault Description
PV3-Input: Overvoltage
Recommended Action
Disconnect PV3 and restart.
D035
Fault Description
PV4-Input: Overcurrent (Hardware)
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D036
Fault Description
PV4-Input: Overcurrent (Software)
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D037
Fault Description
PV4-Input: Undervoltage
Recommended Action
None.
D038
Fault Description
PV4-Input: Overvoltage
Recommended Action
Disconnect PV4 and restart.
D039
Fault Description
PV insulation resistance too low
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D040
Fault Description
Residual current protection
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D041
Fault Description
PV output: Overcurrent
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D042
Fault Description
PV output: Overvoltage (Shutdown)
Recommended Action
Restart; if the problem persists, please contact Customer Service.
D043
Fault Description
PV1-Input: Reverse polarity
Recommended Action
Swap PV1 polarity (+/−), reconnect, and restart the device.
D044
Fault Description
PV2-Input: Reverse polarity
Recommended Action
Swap PV2 polarity (+/−), reconnect, and restart the device.
D045
Fault Description
PV3-Input: Reverse polarity
Recommended Action
Swap PV3 polarity (+/−), reconnect, and restart the device.
D046
Fault Description
PV4-Input: Reverse polarity
Recommended Action
Swap PV4 polarity (+/−), reconnect, and restart the device.
D047
Fault Description
PV1: Relay fault
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
D048
Fault Description
PV2: Relay fault
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
D049
Fault Description
PV3: Relay fault
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
D050
Fault Description
PV4: Relay fault
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
| Fault Code | Fault Description | Recommended Action |
|---|---|---|
| D001 | Device self-test failed | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| D002 | Internal communication error | Restart; if the problem persists, please contact Customer Service. |
| D003 | PV1: Temperature too low | Operation resumes automatically once the temperature returns to normal. |
| D004 | PV1: Temperature too high | Operation resumes automatically once the temperature returns to normal. |
| D005 | PV2: Temperature too low | Operation resumes automatically once the temperature returns to normal. |
| D006 | PV2: Temperature too high | Operation resumes automatically once the temperature returns to normal. |
| D007 | Enclosure temperature too low | Operation resumes automatically once the temperature returns to normal. |
| D008 | Enclosure temperature too high | Operation resumes automatically once the temperature returns to normal. |
| D009 | Push-pull soft-start timeout | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| D010 | LV DC bus: Undervoltage | Restart; if the problem persists, please contact Customer Service. |
| D011 | LV DC bus: Overvoltage | Restart; if the problem persists, please contact Customer Service. |
| D012 | LV DC bus: Short circuit | Restart; if the problem persists, please contact Customer Service. |
| D013 | Battery discharge: Overcurrent (Hardware) | Restart; if the problem persists, please contact Customer Service. |
| D014 | Battery charging: Overcurrent (Hardware) | Restart; if the problem persists, please contact Customer Service. |
| D015 | Battery discharge: Overcurrent | Restart; if the problem persists, please contact Customer Service. |
| D016 | Battery charging: Overcurrent | Restart; if the problem persists, please contact Customer Service. |
| D017 | Boost converter fault | Restart; if the problem persists, please contact Customer Service. |
| D018 | Buck converter fault | Restart; if the problem persists, please contact Customer Service. |
| D019 | Charging output: Undervoltage | Restart; if the problem persists, please contact Customer Service. |
| D020 | Battery charging fault | Restart; if the problem persists, please contact Customer Service. |
| D021 | Battery output: Undervoltage | Restart; if the problem persists, please contact Customer Service. |
| D022 | Battery output: Overvoltage | Restart; if the problem persists, please contact Customer Service. |
| D023 | PV1-Input: Overcurrent (Hardware) | Restart; if the problem persists, please contact Customer Service. |
| D024 | PV1-Input: Overcurrent (Software) | Restart; if the problem persists, please contact Customer Service. |
| D025 | PV1-Input: Undervoltage | None. |
| D026 | PV1-Input: Overvoltage | Disconnect PV1 and restart. |
| D027 | PV2-Input: Overcurrent (Hardware) | Restart; if the problem persists, please contact Customer Service. |
| D028 | PV2-Input: Overcurrent (Software) | Restart; if the problem persists, please contact Customer Service. |
| D029 | PV2-Input: Undervoltage | None. |
| D030 | PV2-Input: Overvoltage | Disconnect PV2 and restart. |
| D031 | PV3-Input: Overcurrent (Hardware) | Restart; if the problem persists, please contact Customer Service. |
| D032 | PV3-Input: Overcurrent (Software) | Restart; if the problem persists, please contact Customer Service. |
| D033 | PV3-Input: Undervoltage | None. |
| D034 | PV3-Input: Overvoltage | Disconnect PV3 and restart. |
| D035 | PV4-Input: Overcurrent (Hardware) | Restart; if the problem persists, please contact Customer Service. |
| D036 | PV4-Input: Overcurrent (Software) | Restart; if the problem persists, please contact Customer Service. |
| D037 | PV4-Input: Undervoltage | None. |
| D038 | PV4-Input: Overvoltage | Disconnect PV4 and restart. |
| D039 | PV insulation resistance too low | Restart; if the problem persists, please contact Customer Service. |
| D040 | Residual current protection | Restart; if the problem persists, please contact Customer Service. |
| D041 | PV output: Overcurrent | Restart; if the problem persists, please contact Customer Service. |
| D042 | PV output: Overvoltage (Shutdown) | Restart; if the problem persists, please contact Customer Service. |
| D043 | PV1-Input: Reverse polarity | Swap PV1 polarity (+/−), reconnect, and restart the device. |
| D044 | PV2-Input: Reverse polarity | Swap PV2 polarity (+/−), reconnect, and restart the device. |
| D045 | PV3-Input: Reverse polarity | Swap PV3 polarity (+/−), reconnect, and restart the device. |
| D046 | PV4-Input: Reverse polarity | Swap PV4 polarity (+/−), reconnect, and restart the device. |
| D047 | PV1: Relay fault | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| D048 | PV2: Relay fault | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| D049 | PV3: Relay fault | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| D050 | PV4: Relay fault | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
High-Voltage Side Faults
A001
Fault Description
Device self-test failed
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
A002
Fault Description
Internal communication error
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
A003
Fault Description
Ambient temperature too low
Recommended Action
Operation resumes automatically once the temperature returns to normal.
A004
Fault Description
Ambient temperature too high
Recommended Action
Operation resumes automatically once the temperature returns to normal.
A005
Fault Description
Inverter side: Temperature too low
Recommended Action
Operation resumes automatically once the temperature returns to normal.
A006
Fault Description
Inverter side: Temperature too high
Recommended Action
Operation resumes automatically once the temperature returns to normal.
A007
Fault Description
PFC Soft-start Timeout
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
A008
Fault Description
HV DC bus: Undervoltage
Recommended Action
Restart; if the problem persists, please contact Customer Service.
A009
Fault Description
HV DC bus: Overvoltage
Recommended Action
Restart; if the problem persists, please contact Customer Service.
A010
Fault Description
HV DC bus: Short circuit
Recommended Action
Restart; if the problem persists, please contact Customer Service.
A011
Fault Description
AC-Output: Overvoltage
Recommended Action
Restart; if the problem persists, please contact Customer Service.
A012
Fault Description
AC-Output: Undervoltage
Recommended Action
Restart; if the problem persists, please contact Customer Service.
A013
Fault Description
Inverter: Residual voltage present
Recommended Action
Restart; if the problem persists, please contact Customer Service.
A014
Fault Description
AC-Output: Overload
Recommended Action
Disconnect the loads and restart the device.
A015
Fault Description
AC-Output: Overload active
Recommended Action
Disconnect the loads and restart the device.
A016
Fault Description
Inverter output: Overcurrent
Recommended Action
Disconnect the loads and restart the device.
A017
Fault Description
AC-Output: Shutdown lockout
Recommended Action
Disconnect the loads and restart the device.
A018
Fault Description
AC-Output: Short circuit
Recommended Action
Disconnect the loads and restart the device.
A019
Fault Description
Grid voltage too low
Recommended Action
Automatically recovers once the grid voltage returns to normal.
A020
Fault Description
Grid voltage too high
Recommended Action
Automatically recovers once the grid voltage returns to normal.
A021
Fault Description
Grid frequency too low
Recommended Action
Automatically recovers once the grid frequency returns to normal.
A022
Fault Description
Grid frequency too high
Recommended Action
Automatically recovers once the grid frequency returns to normal.
A023
Fault Description
Grid input: Overcurrent
Recommended Action
Restart; if the problem persists, please contact Customer Service.
A024
Fault Description
AC-Output: Large current measurement deviation
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
A025
Fault Description
Grid input: Relay stuck
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
A026
Fault Description
Grid input: Relay fails to close
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
A027
Fault Description
AC-Output: Relay stuck
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
A028
Fault Description
AC-Output: Relay fails to close
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
A029
Fault Description
Grid current: DC component too high
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
A030
Fault Description
AC-Output: Frequency too low
Recommended Action
Disconnect the loads and restart the device.
A031
Fault Description
AC-Output: Frequency too high
Recommended Action
Disconnect the loads and restart the device.
A032
Fault Description
Inverter: Hardware current limit (shutdown)
Recommended Action
Disconnect the loads and restart the device.
| Fault Code | Fault Description | Recommended Action |
|---|---|---|
| A001 | Device self-test failed | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| A002 | Internal communication error | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| A003 | Ambient temperature too low | Operation resumes automatically once the temperature returns to normal. |
| A004 | Ambient temperature too high | Operation resumes automatically once the temperature returns to normal. |
| A005 | Inverter side: Temperature too low | Operation resumes automatically once the temperature returns to normal. |
| A006 | Inverter side: Temperature too high | Operation resumes automatically once the temperature returns to normal. |
| A007 | PFC Soft-start Timeout | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| A008 | HV DC bus: Undervoltage | Restart; if the problem persists, please contact Customer Service. |
| A009 | HV DC bus: Overvoltage | Restart; if the problem persists, please contact Customer Service. |
| A010 | HV DC bus: Short circuit | Restart; if the problem persists, please contact Customer Service. |
| A011 | AC-Output: Overvoltage | Restart; if the problem persists, please contact Customer Service. |
| A012 | AC-Output: Undervoltage | Restart; if the problem persists, please contact Customer Service. |
| A013 | Inverter: Residual voltage present | Restart; if the problem persists, please contact Customer Service. |
| A014 | AC-Output: Overload | Disconnect the loads and restart the device. |
| A015 | AC-Output: Overload active | Disconnect the loads and restart the device. |
| A016 | Inverter output: Overcurrent | Disconnect the loads and restart the device. |
| A017 | AC-Output: Shutdown lockout | Disconnect the loads and restart the device. |
| A018 | AC-Output: Short circuit | Disconnect the loads and restart the device. |
| A019 | Grid voltage too low | Automatically recovers once the grid voltage returns to normal. |
| A020 | Grid voltage too high | Automatically recovers once the grid voltage returns to normal. |
| A021 | Grid frequency too low | Automatically recovers once the grid frequency returns to normal. |
| A022 | Grid frequency too high | Automatically recovers once the grid frequency returns to normal. |
| A023 | Grid input: Overcurrent | Restart; if the problem persists, please contact Customer Service. |
| A024 | AC-Output: Large current measurement deviation | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| A025 | Grid input: Relay stuck | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| A026 | Grid input: Relay fails to close | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| A027 | AC-Output: Relay stuck | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| A028 | AC-Output: Relay fails to close | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| A029 | Grid current: DC component too high | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| A030 | AC-Output: Frequency too low | Disconnect the loads and restart the device. |
| A031 | AC-Output: Frequency too high | Disconnect the loads and restart the device. |
| A032 | Inverter: Hardware current limit (shutdown) | Disconnect the loads and restart the device. |
EMS Faults
E001
Fault Description
PCS-Communication error
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
E002
Fault Description
Wi-Fi communication error
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
E003
Fault Description
BMS communication error
Recommended Action
Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service.
| Fault Code | Fault Description | Recommended Action |
|---|---|---|
| E001 | PCS-Communication error | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| E002 | Wi-Fi communication error | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
| E003 | BMS communication error | Disconnect the grid and PV, switch off using the Power button, wait 30 s, then switch on using the Power button; if the problem persists, please contact Customer Service. |
BMS Faults
B001
Fault Description
Deep discharge protection
Recommended Action
Recovers automatically after charging.
B002
Fault Description
Overcharge protection
Recommended Action
Recovers automatically after discharging.
B003
Fault Description
Battery discharge: Over-temperature
Recommended Action
Operation resumes automatically once the temperature returns to normal.
B004
Fault Description
Battery charging: Over-temperature
Recommended Action
Operation resumes automatically once the temperature returns to normal.
B005
Fault Description
Battery discharge: Under-temperature
Recommended Action
Operation resumes automatically once the temperature returns to normal.
B006
Fault Description
Battery discharge: Overcurrent protection
Recommended Action
Clears automatically after 1 minute. If the protection lockout remains, switch off and restart the device; if it cannot be cleared, contact Customer Service.
B007
Fault Description
Short circuit at the battery discharge MOSFET
Recommended Action
Switch off and on using the Power button; if the problem persists, please contact Customer Service.
B008
Fault Description
Reverse polarity protection
Recommended Action
Contact Customer Service.
B009
Fault Description
Charging: Overcurrent protection
Recommended Action
Clears automatically after 1 minute. If the protection lockout remains, switch off and restart the device; if it cannot be cleared, contact Customer Service.
B010
Fault Description
AFE communication error
Recommended Action
Switch off and on using the Power button; if the problem persists, please contact Customer Service.
B011
Fault Description
MOSFET over-temperature protection
Recommended Action
Operation resumes automatically once the temperature returns to normal.
B012
Fault Description
Cell voltage difference protection
Recommended Action
Contact Customer Service.
B013
Fault Description
NTC fault
Recommended Action
Switch off and on using the Power button; if the problem persists, please contact Customer Service.
B014
Fault Description
Cell fault
Recommended Action
Switch off and on using the Power button; if the problem persists, please contact Customer Service.
B015
Fault Description
Charge MOSFET fault
Recommended Action
Switch off and on using the Power button; if the problem persists, please contact Customer Service.
B016
Fault Description
Discharge MOSFET fault
Recommended Action
Switch off and on using the Power button; if the problem persists, please contact Customer Service.
| Fault Code | Fault Description | Recommended Action |
|---|---|---|
| B001 | Deep discharge protection | Recovers automatically after charging. |
| B002 | Overcharge protection | Recovers automatically after discharging. |
| B003 | Battery discharge: Over-temperature | Operation resumes automatically once the temperature returns to normal. |
| B004 | Battery charging: Over-temperature | Operation resumes automatically once the temperature returns to normal. |
| B005 | Battery discharge: Under-temperature | Operation resumes automatically once the temperature returns to normal. |
| B006 | Battery discharge: Overcurrent protection | Clears automatically after 1 minute. If the protection lockout remains, switch off and restart the device; if it cannot be cleared, contact Customer Service. |
| B007 | Short circuit at the battery discharge MOSFET | Switch off and on using the Power button; if the problem persists, please contact Customer Service. |
| B008 | Reverse polarity protection | Contact Customer Service. |
| B009 | Charging: Overcurrent protection | Clears automatically after 1 minute. If the protection lockout remains, switch off and restart the device; if it cannot be cleared, contact Customer Service. |
| B010 | AFE communication error | Switch off and on using the Power button; if the problem persists, please contact Customer Service. |
| B011 | MOSFET over-temperature protection | Operation resumes automatically once the temperature returns to normal. |
| B012 | Cell voltage difference protection | Contact Customer Service. |
| B013 | NTC fault | Switch off and on using the Power button; if the problem persists, please contact Customer Service. |
| B014 | Cell fault | Switch off and on using the Power button; if the problem persists, please contact Customer Service. |
| B015 | Charge MOSFET fault | Switch off and on using the Power button; if the problem persists, please contact Customer Service. |
| B016 | Discharge MOSFET fault | Switch off and on using the Power button; if the problem persists, please contact Customer Service. |
