The Complete Guide To Zeversolar Inverter Error Codes

Why a Zeversolar error code is worth sorting now

When a Zeversolar puts an error number on its screen, it has usually stopped exporting. Each sunny day it stays that way, you pay full price for power your roof should be making. A few of its numbers, like 36 and 38, mean current may be leaking from the solar wiring to earth, and those are safety faults rather than lost savings.

Zeversolar, sold earlier as Eversolar, ceased business in December 2019. There is no warranty and there are no parts, so when the fault is inside the inverter, replacing it is the realistic path. Not every number means that. A wet connector, a tripped solar supply main switch or a grid voltage trip can all put a code on the screen, and none of them needs a new inverter.

A quick diagnosis tells you which kind of fault you have before a whole season of generation slips by. If the inverter is finished, the panels usually stay, and you can choose a straight swap or a hybrid that takes a battery now or later. If the trouble is on the roof, sorting it now stops a damp connector tripping the system every time it rains.

Find your code in the table below to see what it means and how urgent it is. If your home is in Adelaide, the Adelaide Hills, Gawler, the Barossa, the Fleurieu, Murray Bridge and Yorke Peninsula in South Australia, or North Brisbane, Caboolture, Bribie Island, the Sunshine Coast, Noosa and Gympie in Queensland, our own licensed electricians will go through it with you over the phone for free before anyone drives out. Check your postcode to see if we cover you.

Which Zeversolar inverter do you have?

The model is on the label on the side of the inverter. The ZeverCloud app will not tell you, because its servers were switched off in late 2021.

Eversol TL1000-20 to TL3000-20: the older Eversol range. Its manual supplies most of the numbers on this page.
Zeverlution (S1, 3680, 4000 and 5000): the later range. Codes 47 and 61 only appear on these, and 48 comes from a helpdesk list for the 3680 to 5000 models.
Evershine TLC4000 to TLC6000: another Zeversolar range from the same years. Its manual survives only as a secondary copy, which is where code 11 comes from.
Eversolar: the name on some earlier labels and paperwork. Same company, same position: no warranty or parts.

All 27 Zeversolar error codes, explained

A Zeversolar shows a fault as a plain number on its screen, which is why owners search for Error 38 or error code 3. Waiting, No display and the ZeverCloud row are not maker codes, but they are what owners most often type in. Every code is below, grouped by what it relates to: the grid and mains supply, the panel input and power output, insulation and earth faults, the unit's internal hardware, and monitoring. The number in brackets after each code's name is its source in the reference list.

Stop and call A safety or hardware fault that nobody can fix from a phone. Do the one safe restart at most, then call.
Worth a look Something to check or restart safely. If it comes back, book a visit.
Wait and watch The inverter has paused for a reason outside itself, usually the grid or the light, and restarts on its own.

We always err on the cautious side: when a code sits between two ratings, it gets the higher one.

Grid and mains supply error codes 5 codes

The mains grid coming into the unit: voltage, frequency and outages. Many of these are the grid, not the inverter, and clear on their own. 5 wait and watch.

Error code	What it means	What to do
33Zeversolar error code 33	Grid frequency out of range^[1] The mains frequency drifted outside the inverter's limits, so it disconnected. It reconnects by itself once the grid settles; only frequent repeats need a look. Safe steps in the lookup	Wait and watch
34Zeversolar error code 34	Grid voltage out of range^[1] The mains voltage at the inverter went outside its limits, most often too high on a sunny afternoon, so it disconnected. It reconnects on its own; daily repeats mean the grid voltage or the AC cable needs checking. Safe steps in the lookup	Wait and watch
35Zeversolar error code 35	No grid detected^[1] The inverter cannot see the mains. A tripped solar supply main switch, a blackout, a blown fuse or a damaged AC cable are the usual causes. Safe steps in the lookup	Wait and watch
48Zeversolar error code 48	Ten-minute average voltage high^[5] The grid voltage averaged over ten minutes was above the limit, so the inverter disconnected. It reconnects on its own; if it happens most afternoons the grid voltage at your house is running high. Best effort · from a secondary copySafe steps in the lookup	Wait and watch
WaitingZeversolar Waiting	Waiting, checking or reconnect^[1] These are normal states, not faults: the inverter is waiting for enough sunlight, checking the grid before it connects, or reconnecting after a fault cleared. If it sits on Waiting all day in good sun, the array voltage is too low to start. Safe steps in the lookup	Wait and watch

Panel input and power output error codes 2 codes

The DC input from the panels and the power the unit puts out: string voltage, low light, overloads and output limits. 2 worth a look.

Error code	What it means	What to do
37Zeversolar error code 37	Solar array voltage too high^[1] The voltage coming from the panels is above the inverter's maximum. It can happen on a cold bright morning on a system that was wired close to the limit; if it keeps appearing the strings need checking. Safe steps in the lookup	Worth a look
No displayZeversolar No display	No display, no lights^[4] The inverter has no power at all. On a sunny day that means the supply has been cut by a tripped switch or isolator, or the inverter's own power supply has failed, which on a Zeversolar is the end of the unit. Best effort · from a secondary copySafe steps in the lookup	Worth a look

Panels, insulation and earth faults error codes 4 codes

Insulation, earth and leakage faults on the solar panel side. These are safety faults: live DC wiring may be leaking to earth somewhere on the roof. 4 stop and call.

Error code	What it means	What to do
9Zeversolar error code 9	Earth fault detector failure^[1] The circuit that watches for current leaking to earth has itself failed its test. The inverter will not run without it, and it is an internal fault. Safe steps in the lookup	Stop and call
36Zeversolar error code 36	Residual current (earth) fault^[1] The inverter detected current leaking to earth above its limit. That usually means a wet or damaged part of the DC side, and the unit stops until it is fixed. Safe steps in the lookup	Stop and call
38Zeversolar error code 38	Insulation (ISO) fault^[2] The inverter measured too little insulation between the solar array and earth, or the insulation inside the inverter has failed. Water in a roof connector, a damaged cable or an internal fault are the usual causes, and the unit stops until it is cleared. Safe steps in the lookup	Stop and call
43Zeversolar error code 43	Internal earth current mismatch^[1] The inverter's two processors measured different earth leakage currents. One restart after three minutes off sometimes clears it; if it returns the control board is failing. Anything to do with earth or leakage current is a safety fault, so we treat it as a call. Safe steps in the lookup	Stop and call

Internal hardware and safety checks error codes 13 codes

The unit's own electronics: relays, sensors, the DC bus, memory and its self-checks. Nearly all of these need an electrician. 13 stop and call.

Error code	What it means	What to do
1Zeversolar error code 1	Internal communication fault^[1] The two processors inside the inverter have stopped talking to each other. The manual calls this a permanent fault: an internal board problem, not something outside the unit. Safe steps in the lookup	Stop and call
2Zeversolar error code 2	Memory read or write fault^[1] The inverter could not read or write its settings memory. One safe restart sometimes clears it; if it comes back the control board is failing. Internal and hardware faults need testing with the right instruments, so we treat them as a call. Safe steps in the lookup	Stop and call
3Zeversolar error code 3	Output relay failure^[2] The relay that connects the inverter to the grid has failed its self-test. This is an internal hardware fault, and on a Zeversolar it cannot be repaired. Safe steps in the lookup	Stop and call
4Zeversolar error code 4	DC injection too high^[1] The inverter is pushing too much direct current into the grid, which the rules do not allow. The manual lists it as a permanent fault that needs a restart and then service if it returns. DC on the AC side is a protection fault, so we treat it as a call. Safe steps in the lookup	Stop and call
6Zeversolar error code 6	DC bus voltage too high^[1] The voltage on the inverter's internal DC bus went above its limit. If the string voltage is within range, the manual says the internal circuit has broken. Safe steps in the lookup	Stop and call
8Zeversolar error code 8	Output current sensor fault^[1] The sensor that measures the inverter's output current is reading wrong. It is an internal hardware fault listed as permanent in the manual. Safe steps in the lookup	Stop and call
10Zeversolar error code 10	Device fault, unknown error^[1] The inverter has stopped on an internal fault it cannot name. The manual gives no fix for this code, so treat it as a hardware failure. Safe steps in the lookup	Stop and call
41Zeversolar error code 41	Internal voltage reading mismatch^[1] The inverter's two processors measured different grid voltages. One restart after three minutes off sometimes clears it; if it returns the control board is failing. Internal and hardware faults need testing with the right instruments, so we treat them as a call. Safe steps in the lookup	Stop and call
42Zeversolar error code 42	Internal frequency reading mismatch^[1] The inverter's two processors measured different grid frequencies. One restart after three minutes off sometimes clears it; if it returns the control board is failing. Internal and hardware faults need testing with the right instruments, so we treat them as a call. Safe steps in the lookup	Stop and call
44Zeversolar error code 44	Internal DC injection mismatch^[1] The inverter's two processors measured different DC injection values. One restart after three minutes off sometimes clears it; if it returns the control board is failing. DC on the AC side is a protection fault, so we treat it as a call. Safe steps in the lookup	Stop and call
45Zeversolar error code 45	Internal grid reading mismatch^[1] The inverter's two processors measured different grid frequency and voltage values. One restart after three minutes off sometimes clears it; if it returns the control board is failing. Internal and hardware faults need testing with the right instruments, so we treat them as a call. Safe steps in the lookup	Stop and call
47Zeversolar error code 47	Internal consistency fault^[3] The inverter's two processors disagree on a reading (Zeverlution models). One restart sometimes clears it; if it returns the control board is failing. Internal and hardware faults need testing with the right instruments, so we treat them as a call. Safe steps in the lookup	Stop and call
40Zeversolar error code 40	Inverter over temperature^[1] The inside of the inverter got too hot, so it cut back or stopped. Blocked airflow around the heat sink or a hot spot in full sun is the usual cause. Heat shutdowns point at a failing fan, a blocked vent or a bad installation spot, so we treat them as a call. Safe steps in the lookup	Stop and call

Monitoring, communication and settings error codes 3 codes

Monitoring, Wi-Fi, meters, communication between parts of the system, settings and firmware. Usually not a hardware fault, but the system may stop reporting. 1 stop and call, 2 wait and watch.

Error code	What it means	What to do
11Zeversolar error code 11	Firmware version mismatch^[7] The two processors inside the inverter are running different firmware versions. This only appears after a failed update or a board fault and cannot be fixed from outside. Best effort · from a secondary copySafe steps in the lookup	Stop and call
61Zeversolar error code 61	DRED communication fault^[3] The demand response (DRED) input has lost its connection or its link is open (Zeverlution S1 models). It is a communications warning rather than a power fault. Safe steps in the lookup	Wait and watch
Monitoring not workingZeversolar Monitoring not working	ZeverCloud monitoring is gone^[6] Zeversolar stopped trading in December 2019 and its ZeverCloud monitoring servers went off in 2021, so the app and portal will never reconnect. The inverter itself can still be working fine: read its screen or your electricity bill instead. Best effort · from a secondary copySafe steps in the lookup	Wait and watch

Got a Zeversolar error code? Free phone diagnosis in our service area

Our own licensed electricians cover Greater Adelaide and regional SA, and from North Brisbane up through the Sunshine Coast to Gympie. Check your postcode, then read us the code and tell us the install year. If it needs a visit, the callout is credited against the work.

How to reset a Zeversolar inverter safely

Try one restart, in this order:

Switch the solar supply main switch off at the switchboard.
Switch the DC isolator off at the inverter.
Wait five minutes.
Switch the DC isolator back on, then the solar supply main switch.

Never open the unit or touch the wiring. Never restart anything that smells hot or shows scorch marks. If the code comes back after one restart, stop and call.

Zeversolar inverter repair or replacement?

Before anyone blames the inverter, our electricians test the whole system: insulation resistance on each string, earth continuity, the output relay, DC string voltages and currents, the AC supply and whatever the unit has logged. Error 38 shows why. The manual puts it down to low insulation between the array and earth, which is often water in a roof connector or a damaged cable and gets fixed on the roof. It can also be the inverter's own insulation, and testing tells you which.

Error 3, an output relay that has failed its self-test, is the opposite case: it is inside the unit, and on a Zeversolar it cannot be repaired. For faults like that we quote a straight replacement and a hybrid option side by side, so you can add a battery now or later. Your panels usually stay, and the callout comes off whichever you choose.

We do this work in Adelaide, the Adelaide Hills, Gawler, the Barossa, the Fleurieu, Murray Bridge and Yorke Peninsula in South Australia, or North Brisbane, Caboolture, Bribie Island, the Sunshine Coast, Noosa and Gympie in Queensland only. Outside those areas, everything above still applies: take the code, its meaning and the urgency to a licensed electrician near you.

Where these Zeversolar error codes come from

Every Zeversolar code on this page was read from the maker's own manual wherever one survives (85 per cent of them). Where only a secondary copy survives, the row says "best effort" and so does the lookup. The numbers match the references in the code table.

[1]
Zeversolar Eversol TL1000-20 to TL3000-20 Installation and Operating Instructions19 codes, from the maker's own document
[2]
Zeversolar Eversol TL1000-20 to TL3000-20 Installation and Operating Instructions (540-00108-01 V01), same table in the Zeverlution S1 manual V032 codes, from the maker's own document
[3]
Zeversolar Zeverlution S1 Installation and Operating Instructions2 codes, from the maker's own document
[4]
Brand-level row1 code, best effort, from a secondary copy
[5]
Solarmatic helpdesk, Zeverlution 3680/4000/5000 error codes (also listed by SAE Group)1 code, best effort, from a secondary copy
[6]
SolarQuotes Zeversolar review (cease of business 18 December 2019, ZeverCloud not functioning by late 2021) and a Whirlpool thread of users whose uploads stopped in July 20211 code, best effort, from a secondary copy
[7]
Zeversolar Evershine TLC4000 to TLC6000 Installation and Operating Instructions (manualslib copy)1 code, best effort, from a secondary copy

Tables last updated 21 October 2026

Zeversolar error code questions, answered

How do I read a Zeversolar error code?

Look at the screen in daylight, when the inverter is awake, and note the number and whether it clears after a few minutes. Roughly, 33 to 35 and 48 are the grid, 36 to 38 the panels and earth, 40 is heat, and most of the rest are faults inside the unit. Type the number into the search box above the table.

What does Zeversolar error code 38 mean?

38 is “insulation (iso) fault”. The inverter measured too little insulation between the solar array and earth, or the insulation inside the inverter has failed. Water in a roof connector, a damaged cable or an internal fault are the usual causes, and the unit stops until it is cleared. We rate it stop and call. See it in the table.

What does Zeversolar error code 3 mean?

3 is “output relay failure”. The relay that connects the inverter to the grid has failed its self-test. This is an internal hardware fault, and on a Zeversolar it cannot be repaired. We rate it stop and call. See it in the table.

Do you cover my area?

We work in Adelaide, the Adelaide Hills, Gawler, the Barossa, the Fleurieu, Murray Bridge and Yorke Peninsula in South Australia, or North Brisbane, Caboolture, Bribie Island, the Sunshine Coast, Noosa and Gympie in Queensland. Check your postcode to be sure. Outside those areas, this page still tells you what your code means and how urgent it is, and a licensed electrician near you can take it from there.

What does it cost to have a Zeversolar looked at?

For homes in our service area, the phone diagnosis is free. If it needs a visit, there is a callout fee, and it is credited against any repair or replacement we do.

Will you work on a Zeversolar you did not install?

Yes, if it is in our service area. Most of our repair work is on systems someone else installed. We test the whole system, not just the unit on the wall.

Why has my ZeverCloud app stopped working?

Because the service is gone. Zeversolar ceased business in December 2019 and ZeverCloud was switched off in late 2021, so a quiet app is normal and not a fault in your inverter. Check the screen in daylight for a Normal state and a power reading. If you want monitoring back, a visit can fit a third-party energy monitor at the switchboard.

Is a Zeversolar worth repairing?

For a fault inside the inverter, usually not, because there are no parts and no warranty. For a fault outside it, like water in a roof connector or a tripped switch, yes, and that is why we test first. We tell you which on the phone where we can, and price the replacement beside any repair that still makes sense.

Where do the codes on this page come from?

Most come from Zeversolar’s own installation and operating instructions for the Eversol TL range and the Zeverlution S1. Four rows rely on secondary copies because no maker’s manual covers them: code 11, code 48, the dead screen and ZeverCloud. Those say best effort, and every code carries a numbered reference to its document in the source list.

Written by

Joe Deionno

Started in 2017 after years of subcontracting and seeing the dodgy operators at work; set out to be the installer people could trust. Oversees every install in both states.

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