Customer Portal: Sun King

POWER HUB

Warranty Coverage.

Our warranty covers manufacturing defects and damages caused directly by company operations. However, certain types of damage are not covered under our warranty.

Excluded Damages:

Natural Disasters: Earthquakes, floods, hurricanes, and other force majeure events.
Theft or Loss: Whether due to negligence or other circumstances.
Water Damage: Including submersion, moisture exposure, or any water-related incidents.
Fire Damage: Regardless of the cause.

Please review the warranty terms and conditions included with your product for full details on coverage and exclusions. If you have any questions, feel free to contact our Customer Support Team on 8001 for assistance.

Error Codes & Their meanings

Note: For all troubleshooting queries relating to the fault codes below contact the Sun King Inverter Systems Team by clicking Here

E01

Fault Name: BatVoltLow

Affects Output: Yes

Description: Battery undervoltage alarm

E02

Fault Name: BatOverCurrSw

Affects Output: Yes

Description: Battery discharge average current overcurrent software protection

E03

Fault Name: BatOpen

Affects Output: Yes

Description: Battery not-connected alarm

E04

Fault Name: BatLowEod

Affects Output: Yes

Description: Battery undervoltage stop discharge alarm

E05

Fault Name: BatOverCurrHw

Affects Output: Yes

Description: Battery overcurrent hardware protection

E06

Fault Name: BatOverVolt

Affects Output: Yes

Description: Charging overvoltage protection

E07

Fault Name: BusOverVoltHw

Affects Output: Yes

Description: Bus overvoltage hardware protection

E08

Fault Name: BusOverVoltSw

Affects Output: Yes

Description: Bus overvoltage software protection

E09

Fault Name: PVVoltHigh

Affects Output: No

Description: PV overvoltage protection

E10

Fault Name: PvBuckOCSw

Affects Output: No

Description: Buck overcurrent software protection

E11

Fault Name: PvBuckOCHw

Affects Output: No

Description: Buck overcurrent hardware protection

E12

Fault Name: bLineLoss

Affects Output: No

Description: Mains power down

E13

Fault Name: OverloadBypass

Affects Output: Yes

Description: Bypass overload protection

E14

Fault Name: OverloadInverter

Affects Output: Yes

Description: Inverter overload protection

E15

Fault Name: AcOverCurrHw

Affects Output: Yes

Description: Inverter overcurrent hardware protection

E17

Fault Name: InvShort

Affects Output: Yes

Description: Inverter short circuit protection

E19

Fault Name: OverTemperMppt

Affects Output: No

Description: Buck heat sink over temperature protection

E20

Fault Name: OverTemperInv

Affects Output: Yes

Description: Inverter heat sink over temperature protection

E21

Fault Name: FanFail

Affects Output: Yes

Description: Fan failure

E22

Fault Name: EEPROM

Affects Output: Yes

Description: Memory failure

E23

Fault Name: ModelNumErr

Affects Output: Yes

Description: Model setting error

E26

Fault Name: RlyShort

Affects Output: Yes

Description: Inverted AC Output Backfills to Bypass AC Input

E29

Fault Name: BusLow

Affects Output: Yes

Description: Internal battery boost circuit failure

E30

Fault Name: BatCapacityLow1

Affects Output: No

Description: Alarm given when battery capacity rate is lower than 10%

E31

Fault Name: BatCapacityLow2

Affects Output: No

Description: Alarm given when battery capacity rate is lower than 5%

E32

Fault Name: BatCapacityLowStop

Affects Output: Yes

Description: Inverter stops when battery capacity is low

E34

Fault Name: CanCommFault

Affects Output: No

Description: CAN communication fault in parallel operation

E58

Fault Name: BMS communication error

Affects Output: No

Description: Check communication line and lithium battery communication protocol

E59

Fault Name: BMS alarm

Affects Output: No

Description: Check the BMS fault type and troubleshoot battery problems

E60

Fault Name: BMS battery low temperature alarm

Affects Output: No

Description: BMS alarm battery low temperature

E61

Fault Name: BMS battery over temperature alarm

Affects Output: No

Description: BMS alarm battery over temperature

E62

Fault Name: BMS battery over current alarm

Affects Output: No

Description: BMS alarm battery over current

E63

Fault Name: BMS low battery alarm

Affects Output: No

Description: BMS alarm low battery

E64

Fault Name: BMS battery over voltage alarm

Affects Output: No

Description: BMS alarm battery over voltage

Fault Code Troubleshooting

Check the inverter to see if there is a red blinking light, this means that there is an error experienced by the inverter.
The screen may be off, this means the inverter is in Sleep mode but not off
Press the "Ent" button once and wait for the screen to go on
Check the fault code displayed and refer to the user manual for troubleshooting.
if the there is no user manual contact the Sun King mobile assistant Zuwa for guidance.

Battery LCD Malfunction.

Turn off the PV breaker and the AC breaker in the Sun King protection box.
Turn off the inverter by flipping the switch on the right underside part of the inverter.
Wait for 1 minute until the inverter is completely off.
Proceed to the battery, press and hold the power button for at least 2 seconds and release. This will cause the battery display to go into sleep mode until it turns off completely.
Wait for 5 minutes for the battery to reset and then turn on the battery again.
Then turn on the inverter and after 2 minutes lift the PV and AC breakers in the Sun King protection box.
If the issue persists request help from the Sun King Inverter Systems Technical Support Team by clicking the link Here

Inverter not switching automatically to Utility Power (ZESCO).

Press the "Set " button on the inverter. This will display "00ESC" which switches the inverter to setting mode.
Press the "Up" button which will lead to setting "01" and press enter. This will cause the words on the right side of the display to blink until an action is performed.
Press the "Up" until you come to option "UTI." This means the inverter has been configured to prioritize ZESCO as the source power.
Press the "Set" button again which will take you back to the main screen where you will see the word "BYPASS" and a dotted line leading to the percentage bar on the right side of the display which signifies how much of the battery is being used.
If the issue persists request help from the Sun King Inverter Systems Technical Support Team by clicking the link Here

Battery not Charging with Utility(ZESCO)

Press the "Set " button on the inverter. This will display "00ESC" which switches the inverter to setting mode.
Press the "Up" button which will lead to setting "06" and press enter. This will cause the words on the right side of the display to blink until an action is performed.
Press the "Up" until you come to option "CUB." This means the inverter has been configured such that ZESCO can charge the battery even when solar is available.
Press the "Set" button again which will take you back to the main screen where green light will blink provided the battery is not fully charged. (when fully charged the light is idle/ does not blink)
This is not energy saving.
If you prefer the energy saving options repeat the first 2 steps and select the "SNU" option. which means solar and utility will charge at the same time.
Press the "Set" button again which will take you back to the main screen where an icon for the solar panel and utility are connected by dotted lines and leading to the percentage bar.
If the issue persists request help from the Sun King Inverter Systems Technical Support Team by clicking the link Here

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