Huglo Solar recommends you first restart your Sungrow inverter if any of these appear. Find out how to do that here.

Displayed Fault Code

Description

Troubleshooting

002

The grid voltage exceeds

inverter allowable

upper limit.

1. Check the voltage of the grid.

2. If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.

3. If the grid voltage is within the permissible range, contact Sungrow Service Dept.

003

Grid transient voltage

exceeds the permissible

range

1. This is a short-term fault due to grid condition. Wait a moment for inverter recovery.
2. If the fault still exists, please contact Sungrow Service Dept.

004

The grid voltage is below
inverter’s allowable
lower limit.

1. Check the grid voltage.
2. If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the grid voltage is within the permissible range, contact Sungrow Service Dept.

005

The grid voltage is too low.

1. This is a short-term fault due to grid condition. Wait a moment for inverter recovery.
2. If the fault still exists, please contact Sungrow Service Dept.

006

The AC output current
exceeds inverter
allowable upper limit.

1. The inverter will resume if the output current falls below the protection value.
2. If the fault still exists, please contact Sungrow Service Dept.

007

Transient AC overcurrent

1. The inverter will self-recover after several seconds.
2. If the fault still exists, please contact Sungrow Service Dept.

008

The grid frequency exceeds inverter allowable upper limit.

1. Check the grid frequency.
2. If the grid frequency exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the grid frequency is within the permissible range, contact Sungrow Service Dept.

009

The grid frequency is below the inverter allowable lower limit.

1. Check the grid frequency.
2. If the grid frequency exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the grid frequency is within the permissible range, contact Sungrow Service Dept.

010

Islanding

1. Check whether AC circuit breaker is triggered.
2. Check whether AC cables are all firmly connected.
3. Check whether grid is not in service.
4. If all conditions are OK and this fault still occurs in the LCD screen, contact Sungrow Service Dept.

011

The DC component of AC current exceeds inverter limit.

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

012

A failure current is detected.

1. Check the PV strings for ground fault.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

014

The average grid voltage exceeds the permissible range for over 10 minutes.

1. Wait a moment for inverter recovery.
2. Check the voltage of the grid. If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the fault occurs repeatedly, contact Sungrow Service Dept.

015

The grid voltage exceeds the permissible range

1. Check the model of the AC cables.
2.Wait a moment for inverter recovery.
3. If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
4. If the fault occurs repeatedly, contact Sungrow Service Dept.

016

The bus voltage or power is high.

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

019

The transient bus voltage is high.

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

020

The bus voltage is high.

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

021

PV1 input overcurrent is detected

Check the layout and the wiring of PV1 input.

022

PV2 input overcurrent is detected

Check the layout and the wiring of PV2 input.

036

The temperature of radiator is too high.

1. Check whether the placement of inverter is correctly.
2. Check whether the inverter operating ambient temperature is more than the range indicated in the specification.
3. Check whether the AC output power exceeds the nominal power.
4. If the fault still exists, please contact Sungrow.

037

The internal temperature of inverter is too high

038

Relay fault is detected

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

039

The insulation resistance is low. (ISO-flt)

1. Check whether the positive and negative of PV panels is short-circuited with ground lead.
2. Wait a moment for inverter recovery.
3. If the fault occurs repeatedly, contact Sungrow Service Dept.

041

Leakage current self-test abnormality

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

047

The PV configuration mode set in the phone application interface is not in accordance with the configuration in the connection cabinet.

1. Disconnect the inverter.
2. Re-select PV configuration mode and re-connect PV strings.

048

Sampling channel failure

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

053

Auxiliary DSP detects grid voltage exceeds set protection value

1. Check the grid voltage.
2. If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the grid voltage is within the permissible range, contact Sungrow Service Dept.

054

Auxiliary DSP detects grid frequency exceeds set protection value

1. Check the grid frequency.
2. If the grid frequency exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the grid frequency is within the permissible range, contact Sungrow Service Dept.

056

Auxiliary DSP detects grid leakage current exceeds set protection range

1. Check whether there is a grounded fault of the PV string.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

057

Auxiliary DSP AC current sampling channel anomaly

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

058

Auxiliary DSP detects AC current DC injection exceeds inverter set protection range

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

059

Main and auxiliary DSP communication anomaly

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

060

Main and auxiliary DSP sampling difference

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

070

Fans are defective

Stop the inverter and disconnect the AC and DC cables. Check whether the fan duct has been blocked. If not, replace fans.

087

Arc self-detection anomaly warn

Wait a while. Contact Sungrow if device is still in self-detection warn state.

088

Arc anomaly fault

1. Stop the inverter and disconnect the AC and DC cables. Check cable connection for aging and looseness. Re-power on and remove the arc warn manually.
2. Contact Sungrow if this fault still occurs.

089

Arc detection OFF warn

Remove the warn by enable arc detection function or keep the warn by closing arc detection function.

100

The AC output current
exceeds inverter
protection limit.

1. The inverter will resume if the output current falls below the protection value.
2. If the fault still exists, please contact Sungrow Service Dept.

101

The grid frequency exceeds inverter allowable upper limit.

1. Check the grid frequency.
2. If the grid frequency exceeds the permissible range of inverter protection parameters, ask utility grid company for solution.
3. If the grid frequency is within the permissible range, contact Sungrow Service Dept.

102

The grid frequency is below the inverter allowable lower limit.

106

The inverter is not grounded

Check whether there is a reliable inverter grounding line, if thre is access to the ground, and the fault still exists, please contact Sungrow Service Dept.

200

The bus voltage is high.

1. Wait for inverter recovery after bus voltage lower.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

201

The bus voltage is too low.

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

202

PV current overcurrent

1. Wait for inverter recovery after DC current is reduced.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

205

AC output replay abnormal

1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact Sungrow Service Dept.

307

DC power is too high

Check whether the configuration of PV is in the range indicated in the specification. If the fault occurs repeatedly, contact Sungrow Service Dept.

If this is all too technical, please feel free to get in contact with the Huglo Solar Service team or send an email to service@huglo.com.au.

Looking for a better Electricity Plan - Compare with Huglo!

Did this answer your question?