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.

Is Your Solar System Showing Error Codes? Call in the Professionals to Help with Servicing or Repairs

Is your solar system showing an error code, but not sure what it means or what to do about it? You should speak to our experts at HCB Solar! Our dedicated local team are experienced solar installers who can service, repair or replace your solar system for you.

Contact our experienced team today!

We only use trusted solar suppliers

HCB Solar has carefully chosen our partners and suppliers.

We are proud to be Newcastle’s Approved LG Solar Dealer.
The solar products we recommend are truly the best in the country.