SolarEdge Error Codes Troubleshoot Guide

Are you seeing a SolarEdge error code but unsure what it means? This troubleshooting guide to SolarEdge inverter error codes can help.

The types of error codes that appear will depend on the type of inverter (1-phase or 3-phase) you have and the hardware installed on that inverter.

What Makes SolarEdge Inverters Different?

SolarEdge inverters are available as 1-phase or 3-phase inverters and include the SolarEdge module-level optimisation. This means that the maximum power point tracking (MPPT) and voltage management are individually handled for each module by the power optimiser and not necessarily the inverter. As a feature, it makes locating faults on the PV solar array more straightforward and avoids testing each individual panel.

Understanding SolarEdge Error Codes

To find the SolarEdge inverter error code, follow these steps:

First, you need to know if you have a single phase inverter or a three phase inverter, as this will help you to find the correct meaning of the error code to resolve it.

Next, does the code use only numbers or is it a mix of numbers and letters? This will tell you the CPU version of the inverter:

  • If the inverter displays a simple number code, this indicates CPU v3.18xx.
  • If the error code has numbers and letters, this indicates CPU v3.19xx.

If you are still unsure about what inverter you have and what the error code may mean, you can always contact a professional solar installer for SolarEdge support.

SolarEdge Error Codes & What To Do About Them

1-Phase Inverters: Error Codes

Below is a list of 1 phase SolarEdge inverter error codes:

1-phase; CPU v3.18xx and Before Error Codes:

Error Code Description of Error What to Do
4, 5, 6, 8, 11, 12, 18, 22, 42, 45, 48
SW Error.
Contact SolarEdge Support.
9, 13, 111-113
AC Current Surge, Vac surge. Ground current surge.
Check the AC connection to the inverter
Check with the grid operator if a large surge source or irregular load exists near the site.
If the grid does not have problems contact SolarEdge support.
10, 37, 38
Ground Current – RCD. Ground faults may occur due to insufficient insulation to the ground.
WARNING! ELECTRICAL SHOCK HAZARD. Do not touch uninsulated wires when the inverter cover is removed. Only a qualified technician should handle this problem, and only after taking proper precautions. 
1. Turn the inverter ON/OFF switch to OFF. 
2. Wait five minutes for the input capacitors to discharge. 
3. Disconnect the AC breaker. 
4. Disconnect the DC inputs. 
5. Connect each DC string separately, turn the AC and the inverter ON/OFF switch to ON, until the error appears for the faulty string. Do not connect strings with a grounding fault to the inverter. A certified installer must fix the faulty string before connecting it to the inverter. 
For further documentation, contact SolarEdge Support.
14
AC Voltage Too High (Line 1/2/3).
If the fault persists: Check the AC connection to the inverter.
Verify that the inverter is set to the correct country.
Check with the grid operator if a large surge source or irregular load exists near the site.
Verify that the output wire size matches the distance between the inverter and the location of the grid connection.
Use a larger gauge wire for the AC output.
15
DC Voltage Too High (surge).
The SolarEdge system normally eliminates DC over-voltage errors. If the fault persists:
Turn OFF the inverter ON/OFF switch. If after five minutes, the LCD panel does not show a low safety voltage (1V per optimiser),
check which string is malfunctioning and recheck its connections to the inverter.
Proceed according to the Power Optimiser Troubleshooting section of the installation guide.
Re-commission all inverters in the site, as described in Commissioning the Installation or contact your solar installer.
16, 149, 153, 181, 166-168, 170
Hardware Error.
Contact SolarEdge Support.
17, 117
Temperature Too High.
Verify proper inverter clearances.
Make sure the heat-sink fins are clean and unobstructed.
If the fault persists, contact your solar installer.
25, 134
Isolation Fault.
PV solar arrays are not properly isolated from ground earth.
Check the PV installation for isolation problems and ground leakage.
Only a certified PV installer may fix the faulty string before connecting it to the inverter.
If the fault persists, contact your solar installer.
26
Faulty AC Relay.
Contact SolarEdge support.
28
RCD Sensor Error.
Contact SolarEdge support.
29, 30
Phase Balance Error.
Check the grid connection. Check the GND connection.
Check the L1, L2 and Neutral connections.
Verify symmetric load between L1, and L2 . Consult the local grid authority.
31, 33
AC Voltage Too High (Line 1/2/3).
Grid voltage is above the country limit. Verify that the inverter is set to the correct country.
Turn OFF the inverters in the site and verify AC grid voltage.
If the inverter is located far from the connection point to the grid, use a larger gauge AC wire.
Consult the grid operator. If permitted by local authorities, change the grid protection values.
32, 41
AC Voltage Too Low.
Verify that the inverter is set to the correct country.
Consult the grid operator. If permitted by local authorities, change the grid protection values.
34, 64-66
AC Freq Too High (Line 1/2/3).
Verify that the inverter is set to the correct country.
Consult the grid operator. If permitted by local authorities, change the grid protection values.
35, 67-69
AC Freq Too Low (Line 1/2/3).
Verify that the inverter is set to the correct country.
Consult the grid operator. If permitted by local authorities, change the grid protection values.
36
DC Injection (Line 1/2/3).
Contact SolarEdge support.
40
Islanding. The Grid is down.
When AC grid voltage returns the inverter will restart after the reconnection time.
If the problem persists, consult with the grid operator.
44
No Country Selected.
Select the country, as described in the Country and Grid section of the installation guide.
46
Phase Unbalance.
Select Power Control > Phase Balance > Disable.
118
Temperature Too low.
Make sure the inverter is installed in a location with ambient temperatures within the range specified in the datasheet.
If the fault persists, contact your solar installer.
144
Islanding – passive.
AC grid voltage malfunction.
When AC voltage returns the inverter should restart after the reconnection time.
If the problem persists, consult with the grid operator.
145
UDC Max.
Contact SolarEdge support.
146
UDC Min.
Contact SolarEdge support.
147, 150, 151, 12
Arc Fault Detected.
Contact SolarEdge support.
152
Arc detector self-test failed.
Contact SolarEdge support.
178
Internal RGM Error.
Check the Energy Meter CTs wiring.
Contact your solar installer.
185
Energy Meter Comm. Error.
Contact SolarEdge support.
13
ARC_PWR_ DETECT.
Contact SolarEdge support.
55
V-Line Max. The AC voltage is too high.
Verify that the inverter is set to the correct country.
Turn OFF the inverters in the site and verify AC grid voltage.
If the inverter is located far from the connection point to the grid, use a larger gauge AC wire.
Consult the grid operator. If permitted by local authorities, change the grid protection values.
56
V-Line Min. The AC voltage is too low.
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
57, 59, 60
-ACDC L1/L2/L3. AC overcurrent.
Contact SolarEdge support.
61
I-RCD STEP. Ground Current – RCD.
Contact SolarEdge support.
100-102
TZ L1/L2/L3. AC
Contact SolarEdge support.
158
Controller 3/12/34 Error.
Contact SolarEdge support.
199
RSD Error. Rapid Shutdown hardware error.
Contact SolarEdge support.
127
IRCDMax. RCD current surge. Ground faults may occur due to insufficient insulation to the ground
WARNING! ELECTRICAL SHOCK HAZARD. Do not touch uninsulated wires when the inverter cover is removed.
Only a qualified technician should handle this problem, and only after taking proper precautions.
1. Turn the inverter ON/OFF switch to OFF.
2. Wait five minutes for the input capacitors to discharge.
3. Disconnect the AC breaker.
4. Disconnect the DC inputs.
5. Connect each DC string separately, and turn the AC and the inverter ON/OFF switch to ON, until the error appears for the faulty string.
Do not connect strings with a grounding fault to the inverter.
A certified installer must fix the faulty string before connecting it to the inverter For further documentation, contact SolarEdge Support.
169
RCD Error. RCD Sensor Error.
Contact SolarEdge support.
133
Temp Sensor fault. 
Broken or unconnected temperature sensor.
Contact SolarEdge support.
123
MainError. Grid measurements are out of range.
Contact the grid operator.
96, 98
Islanding Trip 1/2. AC grid voltage malfunction.
When AC voltage returns the inverter should restart after the reconnection time.
If the problem persists, consult with the grid operator.
62
I-RCD MAX.
If the problem persists, contact your solar installer.
171
Over voltage Vin. Over voltage in DC input of the inverter.
Check the strings’ voltage. Contact your solar installer.
163
Tz Overcurrent 1/2/3.
Contact SolarEdge support.
166-168
Tz Over voltage cap1/2/3.
Verify that the inverter is set to the correct country.
Turn OFF the inverters in the site and verify AC grid voltage.
If the inverter is located far from the connection point to the grid, use a larger gauge AC wire.
Consult the grid operator. If permitted by local authorities, change the grid protection values.
169
Tz Over current Rcd.
Contact SolarEdge support.
178-180
Vf1/2/3 surge. Ground current surge.
Check the AC connection to the inverter.
Check with the grid operator if a large surge source or irregular load exists near the site.
If the grid does not have problems contact SolarEdge support.
137
RCD Test.
Contact SolarEdge support.
96, 98
Islanding Trip 1/2. AC grid voltage malfunction.
When AC voltage returns the inverter should restart after the reconnection time.
If the problem persists, consult with the grid operator.

1-phase; CPU v3.19xx and Later, Including 4.x

Error Code Description of Error What to Do
2x13, 2x15, 2x16, 3x2, 2x2D, 3xC, 3xF
SW Error.
Contact SolarEdge Support.
2x9, 2xD 18x6F/70/71
AC Current Surge, Vac surge. Ground current surge.
Check the AC connection to the inverter:
Check with the grid operator if a large surge source or irregular load exists near the site.
If the grid does not have problems contact SolarEdge support.
2xA, 2x25, 2x26
Ground Current – RCD.
Ground faults may occur due to insufficient insulation to the ground.
WARNING! ELECTRICAL SHOCK HAZARD. Do not touch uninsulated wires when the inverter cover is removed.
Only a qualified technician should handle this problem, and only after taking proper precautions. 
1. Turn the inverter ON/OFF switch to OFF. 
2. Wait five minutes for the input capacitors to discharge. 
3. Disconnect the AC breaker. 
4. Disconnect the DC inputs. 
5. Connect each DC string separately, turn the AC and the inverter ON/OFF switch to ON, until the error appears for the faulty string.
Do not connect strings with a grounding fault to the inverter. A certified installer must fix the faulty string before connecting it to the inverter. 
For further documentation, contact SolarEdge Support.
2xF
AC Voltage Too High (Line 1/2/3).
If the fault persists: Check the AC connection to the inverter.
Verify that the inverter is set to the correct country.
Check with the grid operator if a large surge source or irregular load exists near the site.
Verify that the output wire size matches the distance between the inverter and the location of the grid connection.
Use a larger gauge wire for the AC output.
2xE
DC Voltage Too High (surge).
The SolarEdge system normally eliminates DC over-voltage errors.If the fault persists:
Turn OFF the inverter ON/OFF switch.
If after five minutes, the LCD panel does not show a low safety voltage (1V per optimiser),
check which string is malfunctioning and recheck its connections to the inverter.
Proceed according to the Power Optimiser Troubleshooting section of the installation guide.
Re-commission all inverters in the site, as described in Commissioning the Installation or contact your solar installer.
2x10, 2x95, 2x59, 2xB5, 18xA6-A8, 18xAA
Hardware Error.
Contact SolarEdge Support.
2x11, 18x75, 2xB6
Temperature Too High.
Verify proper inverter clearances.
Make sure the heat-sink fins are clean and unobstructed.
If the fault persists, contact your solar installer.
2x19, 18x86
Isolation Fault.
The PV solar array is not properly isolated from ground earth.
Check the PV installation for isolation problems and ground leakage.
Only a certified PV installer may fix the faulty string before connecting it to the inverter.
If the fault persists, contact your solar installer.
2x1A
Faulty AC Relay.
Contact SolarEdge support.
2x1C
RCD Sensor Error.
Contact SolarEdge support.
2x1D, 2x1E
Phase Balance Error.
Check the grid connection. Check the GND connection.
Check the L1, L2 and Neutral connections.
Verify symmetric load between L1, and L2 .
Consult the local grid authority.
2x1F, 2x21
AC Voltage Too High (Line 1/2/3).
Grid voltage is above the country limit.
Verify that the inverter is set to the correct country.
Turn OFF the inverters in the site and verify AC grid voltage.
If the inverter is located far from the connection point to the grid, use a larger gauge AC wire.
Consult the grid operator. If permitted by local authorities, change the grid protection values.
2x20, 2x29
AC Voltage Too Low.
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
2x22, 18x40- 59/A-F
AC Freq Too High (Line 1/2/3).
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
2x23, 18x40- 59/A-F
AC Freq Too Low (Line 1/2/3).
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
2x24
DC Injection (Line 1/2/3).
Contact SolarEdge support.
2x28
Islanding. The Grid is down.
When AC grid voltage returns the inverter will restart after the reconnection time.
If the problem persists, consult with the grid operator.
2x2C
Islanding. The Grid is down.
When AC grid voltage returns the inverter will restart after the reconnection time.
If the problem persists, consult with the grid operator.
2x2C
No Country Selected.
Select the country, as described in the Country and Grid section of the installation guide.
3xA
Phase Unbalance.
Select Power Control > Phase Balance > Disable.
18x76
Temperature is too low.
Make sure the inverter is installed in a location with ambient temperatures within the range specified in the datasheet.
If the fault persists, contact your solar installer.
2x90
Islanding – passive.
AC grid voltage malfunction.
When AC voltage returns the inverter should restart after the reconnection time.
If the problem persists, consult with the grid operator.
2x91
UDC Max.
Contact SolarEdge support.
2x92
UDC Max.
Contact SolarEdge support.
3x11, 2x96, 2x97,18xC, 18x8E
Arc Fault Detected.
Contact SolarEdge support.
2x98
Arc detector self-test failed.
Contact SolarEdge support.
3x6D
Internal RGM Error.
Check the Energy Meter CTs wiring. Contact your solar installer.
3x6E
Energy Meter Comm. Error.
Contact SolarEdge support.
18x98, 18x99
Fan # Failure.
Clean or replace the fan.
18xD
ARC_PWR_ DETECT.
Contact SolarEdge support.
18x37
V-Line Max. The AC voltage is too high.
Verify that the inverter is set to the correct country.
Turn OFF the inverters in the site and verify AC grid voltage.
If the inverter is located far from the connection point to the grid, use a larger gauge AC wire.
Consult the grid operator. If permitted by local authorities, change the grid protection values.
18x38
V-Line Min. The AC voltage is too low.
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
18x39/3B/3C
I-ACDC L1/L2/L3. AC overcurrent.
Contact SolarEdge support.
18x3D
I-RCD STEP. Ground Current – RCD.
Contact SolarEdge support.
18x64-66
TZ L1/L2/L3. AC overcurrent.
Contact SolarEdge support.
18x9C-19x9E
Controller 3/12/34 Error.
Contact SolarEdge support.
18xC7
RSD Error. Rapid Shutdown hardware error.
Contact SolarEdge support.
2xC5
Rapid shutdown test failed.
Check safe VDC voltage and if it doesn't drop below 30V, check the string voltage.
Set rapid shutdown functionality. Check the inverter for internal damage.
18x7F
IRCDMax. RCD current surge.
Ground faults may occur due to insufficient insulation to the ground.
WARNING! ELECTRICAL SHOCK HAZARD.
Do not touch uninsulated wires when the inverter cover is removed.
Only a qualified technician should handle this problem, and only after taking proper precautions. 
1. Turn the inverter ON/OFF switch to OFF. 
2. Wait five minutes for the input capacitors to discharge. 
3. Disconnect the AC breaker. 
4. Disconnect the DC inputs. 
5. Connect each DC string separately, turn the AC and the inverter ON/OFF switch to ON,
until the error appears for the faulty string.
Do not connect strings with a grounding fault to the inverter.
A certified installer must fix the faulty string before connecting it to the inverter. 
For further documentation, contact SolarEdge Support.
18xA9
RCD Error. RCD Sensor Error.
Contact SolarEdge support.
18x85
Temp Sensor fault. Broken or unconnected temperature sensor.
Contact SolarEdge support.
18x7B
MainError. Grid measurements are out of range.
Contact the grid operator.
18x60/18x62
Islanding Trip1/2. AC grid voltage malfunction.
When AC voltage returns the inverter should restart after the reconnection time. If the problem persists, consult with the grid operator.
18x3E
I-RCD MAX.
If the problem persists, contact your solar installer.
18xAB
Over voltage Vin. Over voltage in DC input of the inverter.
Check the strings’ voltage. Contact your solar installer.
18xA3-5
Tz Overcurrent 1/2/3.
Contact SolarEdge support.
18xA6-8
Tz Over voltage cap1/2/3.
Verify that the inverter is set to the correct country.
Turn OFF the inverters in the site and verify AC grid voltage.
If the inverter is located far from the connection point to the grid, use a larger gauge AC wire.
Consult the grid operator. If permitted by local authorities, change the grid protection values.
18xA9
Tz Over current Rcd.
Contact SolarEdge support.
18xB2-4
Vf1/2/3 surge. Ground current surge.
Check the AC connection to the inverter.
Check with the grid operator if a large surge source or irregular load exists near the site.
If the grid does not have problems contact SolarEdge support.
18x89
RCD Test.
Contact SolarEdge support.
18x60/18x62
Islanding Trip1/2. AC grid voltage malfunction.
When AC voltage returns the inverter should restart after the reconnection time. If the problem persists, consult with the grid operator.
18x18
Pwr Boot error.
Contact SolarEdge support.
2xB8
Storage module over temperature.
Contact SolarEdge support.
18x17
Main Capacitor error.
Contact SolarEdge support.
2x86
DSP1- DSP2 VDC difference max.
Contact SolarEdge support.
18xD2
Tz Boost Over current.
Contact SolarEdge support.
18xD3
Tz Boost Over voltage.
Contact SolarEdge support.
18xB1
Tz Global.
Contact SolarEdge support.
18x67
TZ ITO.
Contact SolarEdge support.
18x68
TZ Misc.
Contact SolarEdge support.
18xAC
Tz Mngr Driver Dis.
Update the firmware to the latest version. Re-select the country code.
18xB0
Tz NC.
Contact SolarEdge support.
18xAE
Tz OnOff switch disconnected.
Update the firmware to the latest version. Re-select the country code. Perform an AC reset. Check ON/OFF Switch wiring.
18xCC
Tz OVACSurge.
Contact SolarEdge support.
18xAA
Tz Over voltage bridge cap.
Check isolation and electrical voltage. Update the firmware to the latest version. Re-select the country code.
18xAB
Tz Over voltage Vin Buck.
Update the firmware to the latest version. Re-select the country code.
18xAD
Tz Pwr Driver Disconnected.
Update the firmware to the latest version. Re-select the country code.
18x63
TZ RCD.
Contact SolarEdge support.
18xAF
Tz RSD.
Contact SolarEdge support.

3-Phase Inverters: Error Codes

Below is a list of 3 phase SolarEdge inverter error codes:

3-phase; CPU v3.18xx and before

Error Code Description of Error What to Do
45, 48, 94, 107- 111,113, 132-134, 140
SW Error.
Contact SolarEdge Support.
112
Wring AC connection.
Switch between L1 and L2 or L2 and L3 connections. Contact your solar installer.
76, 77, 90
Ground Current – RCD. Ground faults may occur due to insufficient insulation to the ground.
WARNING! ELECTRICAL SHOCK HAZARD.
Do not touch uninsulated wires when the inverter cover is removed.
Only a qualified technician should handle this problem, and only after taking proper precautions. 
1. Turn the inverter ON/OFF switch to OFF. 
2. Wait five minutes for the input capacitors to discharge. 
3. Disconnect the AC breaker. 
4. Disconnect the DC inputs. 
5. Connect each DC string separately, turn the AC and the inverter ON/OFF switch to ON,
until the error appears for the faulty string. Do not connect strings with a grounding fault to the inverter.
A certified installer must fix the faulty string before connecting it to the inverter. 
For further documentation, contact SolarEdge Support.
58/59/60
AC Voltage Too High (Line 1/2/3). AC voltage surge.
If the fault persists: Check the AC connection to inverter.
Verify that the inverter is set to the correct country.
Check with the grid operator if a large surge source or irregular load exists near the site.
Verify that the output wire size matches the distance between the inverter and the location of the grid connection.
Use a larger gauge wire for the AC output.
85, 86, 88
DC Voltage Too High (surge).
The SolarEdge system normally eliminates DC over-voltage errors. If the fault persists:
Turn OFF the inverter ON/OFF switch.
If after five minutes, the LCD panel does not show a low safety voltage (1V per optimiser),
check which string is malfunctioning and recheck its connections to the inverter.
Proceed according to the Power Optimiser Troubleshooting section of the installation guide.
Re-commission all inverters in the site, as described in Commissioning the Installation. Or contact your solar installer.
95, 106, 125,126, 161, 162, 166, 172-175
Hardware Error.
Contact SolarEdge Support.
104, 163-165
Temperature Too High.
Verify proper inverter clearances. Make sure the heat-sink fins are clean and unobstructed.
121
Isolation Fault. PV solar array is not properly isolated from ground earth.
Check the PV installation for isolation problems and ground leakage.
Only a certified PV installer may fix the faulty string before connecting it to the inverter.
Contact your solar installer.
122
Faulty AC Relay.
Contact SolarEdge support.
124
RCD Sensor Error.
Contact SolarEdge support.
64/65/66
AC Voltage Too High (Line 1/2/3). Grid voltage is above the country limit.
Verify that the inverter is set to the correct country.
Turn OFF the inverters in the site and verify AC grid voltage.
If the inverter is located far from the connection point to the grid, use a larger gauge AC wire.
Consult the grid operator. If permitted by local authorities, change the grid protection values.
61/62/63, 67/68/69
AC Voltage Too Low.
Verify that the inverter is set to the correct country. Consult the grid operator. If permitted by local authorities, change the grid protection values.
79/80/81
AC Freq Too High (Line 1/2/3).
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
82/83/84
AC Freq Too Low (Line 1/2/3).
Verify that the inverter is set to the correct country. Consult the grid operator. If permitted by local authorities, change the grid protection values.
72/74/75
DC Injection (Line 1/2/3).
Contact SolarEdge support.
44
No Country Selected.
Select the country, as described in the Country and Grid section of the installation guide.
46
Phase Unbalance
Select Power Control > Phase Balance > Disable
70
VLL Max. Voltage too high.
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
VLL Min.
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
78
Grid Sync Error.
Check grid voltage and frequency stability.
91/92/93, 96/97/98
AC Over Current Line 1/2/3.
Contact SolarEdge support.
49
Communication Error.
Contact SolarEdge support.
99-101
AC Voltage Too High Line 1/2/3.
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
105
Temperature Too low.
Make sure the inverter is installed in a location with ambient temperatures within the range specified in the datasheet.
114
RCD Current Surge.
Contact SolarEdge support.
115
Unbalanced DC Voltage.
Contact SolarEdge support.
116
Common Voltage Too High.
Contact SolarEdge support.
123
Measurement Error.
Contact SolarEdge support.
124
Ground Current – RCD.
Contact SolarEdge support.
87
Islanding – Active.
AC grid voltage malfunction.
When AC voltage returns the inverter should restart after the reconnection time.
If the problem persists, consult with the grid operator.
89
Islanding – passive.
AC grid voltage malfunction.
When AC voltage returns the inverter should restart after the reconnection time.
If the problem persists, consult with the grid operator.
102
UDC Max.
Contact SolarEdge support.
103
UDC Min.
Contact SolarEdge support.
147, 150, 151
Arc Fault Detected.
Contact SolarEdge support.
152
Arc detector self-test failed.
Contact SolarEdge support.
1-4, 6-7
Fan # Failure.
Clean or replace the fan.

3-phase; CPU v3.19xx and later, including 4.x

Error Code Description of Error What to Do
3x2, 3xC, 3xF, 8x11 - 8x13, 8x3D, 8x4A - 8x4E, 8x50
SW Error.
Contact SolarEdge Support.
8xF
Wring AC connection.
Switch between L1 and L2 or L2 and L3 connections. Contact your solar installer.
8x2B, 8x2C, 8x39
Ground Current – RCD.
Ground faults may occur due to insufficient insulation to the ground.
WARNING! ELECTRICAL SHOCK HAZARD.
Do not touch uninsulated wires when the inverter cover is removed.
Only a qualified technician should handle this problem, and only after taking proper precautions. 
1. Turn the inverter ON/OFF switch to OFF. 
2. Wait five minutes for the input capacitors to discharge. 
3. Disconnect the AC breaker. 
4. Disconnect the DC inputs. 
5. Connect each DC string separately, turn the AC and the inverter ON/OFF switch to ON,
until the error appears for the faulty string. Do not connect strings with a grounding fault to the inverter.
A certified installer must fix the faulty string before connecting it to the inverter. 
For further documentation, contact SolarEdge Support.
8x19/ 8x1A/ 8x1B
AC Voltage Too High (Line 1/2/3). AC voltage surge.
If the fault persists: Check the AC connection to inverter.
Verify that the inverter is set to the correct country.
Check with the grid operator if a large surge source or irregular load exists near the site.
Verify that the output wire size matches the distance between the inverter and the location of the grid connection.
Use a larger gauge wire for the AC output.
8x34, 8x35, 8x37
DC Voltage Too High (surge).
The SolarEdge system normally eliminates DC over-voltage errors. If the fault persists:
Turn OFF the inverter ON/OFF switch. If after five minutes,
the LCD panel does not show a low safety voltage (1V per optimiser),
check which string is malfunctioning and recheck its connections to the inverter.
Proceed according to the Power Optimiser Troubleshooting section of the installation guide.
Re-commission all inverters in the site, as described in Commissioning the Installation.
8x3E, 8x49, 8x5C, 8x5D, 8x75-79, 8x7A- 7F, 8x80-83
Hardware Error.
Contact SolarEdge Support.
8x47, 8x77-79
Temperature Too High.
Verify proper inverter clearances. Make sure the heat-sink fins are clean and unobstructed.
8x58
Isolation Fault.
PV solar arrays are not properly isolated from ground earth.
Check the PV installation for isolation problems and ground leakage.
Only a certified PV installer may fix the faulty string before connecting it to the inverter.
8x59
Faulty AC Relay.
Contact SolarEdge support.
8x5B
RCD Sensor Error.
Contact SolarEdge support.
8x1F/ 8x20/ 8x21
AC Voltage Too High (Line 1/2/3). Grid voltage is above the country limit.
Verify that the inverter is set to the correct country.
Turn OFF the inverters in the site and verify AC grid voltage.
If the inverter is located far from the connection point to the grid, use a larger gauge AC wire.
Consult the grid operator. If permitted by local authorities, change the grid protection values.
8x1C/ 8x1D/ 8x1E 8x22/8x23/8x24
AC Voltage Too Low.
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
8x2E/8x2F/8x30, 8x87-8x89
AC Freq Too High (Line 1/2/3).
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
8x31/8x32/8x33, 8x8A-8x8C
AC Freq Too Low (Line 1/2/3).
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
8x27/8x29/8x2A
DC Injection (Line 1/2/3).
Contact SolarEdge support.
3xB
No Country Selected.
Select the country, as described in the Country and Grid section of the installation guide.
3xA
Phase Unbalance.
Select Power Control > Phase Balance > Disable.
8x25
VLL Max. Voltage too high.
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
8x26
VLL Min.
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
8x2D
Grid Sync Error.
Check grid voltage and frequency stability.
8x3A/8x3B/ 8x3C 8x3F/ 8x40/ 8x41
AC Over Current Line 1/2/3.
Contact SolarEdge support.
8x10
Communication Error.
Contact SolarEdge support.
8x42, 8x43, 8x44
AC Voltage Too High Line 1/2/3.
Verify that the inverter is set to the correct country.
Consult the grid operator.
If permitted by local authorities, change the grid protection values.
8x48
Temperature is too low.
Make sure the inverter is installed in a location with ambient temperatures within the range specified in the datasheet.
8x51
RCD Current Surge.
Contact SolarEdge support.
8x52
Unbalanced DC Voltage.
Contact SolarEdge support.
8x53
Common Voltage Too High.
Contact SolarEdge support.
8x5A
Measurement Error.
Contact SolarEdge support.
8x5B
GroundCurrent – RCD.
Contact SolarEdge support.
8x36
Islanding – Active.
AC grid voltage malfunction.
When AC voltage returns the inverter should restart after the reconnection time.
If the problem persists, consult with the grid operator.
8x38
Islanding – passive.
AC grid voltage malfunction.
When AC voltage returns the inverter should restart after the reconnection time.
If the problem persists, consult with the grid operator.
8x45
UDC Max.
Contact SolarEdge support.
8x46
UDC Min.
Contact SolarEdge support.
3x11, 2x96, 2xC6,2x97,8xC
Arc Fault Detected.
Contact SolarEdge support.
3x6D
Internal RGM Error.
Check the Energy Meter CTs wiring.
3x6E
Energy Meter Comm. Error.
Contact SolarEdge support.
8x66 - 8x69, 8x6A - 8x6F
Fan # Failure.
Clean or replace the fan.
8xB8
Pairing Error.
Contact SolarEdge support or your solar installer for support.
8x85, 8x86
SPD AC / SPD DC.
Contact SolarEdge support or your solar installer for support.
8x17
Main Capacitor error.
Contact SolarEdge support or your solar installer for support.

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