- Solar and energy
- Solar inverter
Utility Loss
GoodWe Utility Loss on a solar inverter: grid not detected
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
The GoodWe inverter cannot detect the utility grid (code 23 on the XS series) and stops exporting. First check whether you have power at home and whether the inverter's AC breaker in the panel is on.
Safety first
Stop and check this first
- If the inverter AC breaker trips again when you switch it on, do not keep resetting it: repeated tripping points to a fault the installer must locate.
Safe checks you can perform
- Message, code and time of the alert
- Power supply at home
- Position of the inverter AC breaker
- Inverter AC cable and connection
Leave these tasks to a qualified professional
- Do not attempt this professional task: AC cable and breaker inspection
- Do not attempt this professional task: Grid voltage and frequency at the inverter
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
AC cable and breaker inspection
What they doWith the system disconnected, the installer inspects the AC cable, its connector at the inverter and the dedicated AC breaker.
They must show youphotos of the AC connector and breaker before and after.
In writingwhat was loose or open, what was replaced and the start-up test with the inverter in Normal.
Grid voltage and frequency at the inverter
What they doThe installer measures grid voltage and frequency at the inverter AC terminals and compares them with the model specification.
They must show youthe values measured at the AC terminals against the model specification.
In writingwhere it was measured, the values and the state of the AC breaker.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Message, code and time of the alert
- Who:
- you, no tools.
- How:
- read the message on the inverter display or in the SolarGo app or SEMS Portal. On the LCD, the Error History menu stores the latest errors with their time.
- Result that matters:
- that the alert is Utility Loss (code 23 on the XS series) and since when it appears.
- If it matches a known power cut:
- it points to the grid, not the inverter.
- If it appears while your house has power:
- continue with the breaker check.
- Evidence to keep:
- photo of the display or app screenshot with date and time.
Evidence: User Manual V1.7-2026-08-20 Grid-Tied PV Inverter XS Series 0.7-3.3kW · XS SERIES USER MANUAL Ver2.6 EN
Power supply at home
- Who:
- you, no tools.
- How:
- check whether lights and sockets work at home and whether your network operator reports an outage in your area.
- Result that matters:
- whether the grid is present when the alert appears.
- If there is no power at home:
- the cause is external; GoodWe states the alarm clears automatically when grid power returns.
- If there is power at home:
- a general outage is ruled out; check the inverter breaker.
- Evidence to keep:
- time of the outage and time power came back.
Evidence: User Manual V1.9-2026-06-29 Grid-Tied PV Inverter XS Series (0.7-3.3kW) G3
Position of the inverter AC breaker
- Who:
- you, looking at the panel without opening covers or touching wiring.
- How:
- find the AC breaker labelled for the PV inverter in your electrical panel and see whether it is on.
- Result that matters:
- whether the breaker is on, as the manual requires.
- If it is off:
- switch it on once; if it trips again, leave it off and call the installer.
- If it is on and the alert stays:
- the breaker is ruled out and the AC cable or connection becomes the focus.
- Evidence to keep:
- photo of the panel showing the breaker position.
Evidence: User Manual V1.9-2026-06-29 Grid-Tied PV Inverter XS Series (0.7-3.3kW) G3
Inverter AC cable and connection
- Who:
- a qualified installer or electrician.
- How:
- with the inverter powered off and disconnected as the manual describes, inspect the AC cable and connector and confirm the grid reaches the inverter terminals.
- Result that matters:
- whether the grid reaches the inverter and the AC cable is properly connected.
- If the connector or cable was loose:
- the cause is confirmed; after the repair the inverter should go from Waiting to Normal.
- If the grid arrives correctly and the alert stays:
- the manual refers you to GoodWe after-sales service.
- Evidence to keep:
- job sheet with what was checked and photos of the AC connector.
Work on mains voltage and inside the panel. Only a qualified installer or electrician does this; the GoodWe manual is addressed to trained technicians.
Evidence: User Manual V1.7-2026-08-20 Grid-Tied PV Inverter XS Series 0.7-3.3kW · User Manual V1.9-2026-06-29 Grid-Tied PV Inverter XS Series (0.7-3.3kW) G3
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Solar and energy
- Brand
- GoodWe
- Product type
- Solar inverter
Known code variants
- GoodWe código 23 Utility Loss
- GoodWe error 23
- GoodWe error code 23
- GoodWe inverter no grid
- GoodWe Utility Loss
- inversor GoodWe sin red
What it means
GoodWe describes Utility Loss as utility unavailable: the inverter sees no grid on its AC output and does not connect. The manual names three origins: a utility power failure, a disconnected AC cable or an AC breaker that is off. On the XS G3 series the alarm clears by itself once grid power returns. The code does not separate an external outage from an open protection device or a loose AC connection at the inverter, so it does not point to a specific part.
Warnings and stop conditions
- Mediumeditorial warning
If the inverter AC breaker trips again when you switch it on, do not keep resetting it: repeated tripping points to a fault the installer must locate.
Evidence: User Manual V1.9-2026-06-29 Grid-Tied PV Inverter XS Series (0.7-3.3kW) G3
Symptoms and causes
Probable causes · in order
- Utility power outagePossible
The utility grid power has failed. You can tell because power is also off at home or in your area, and GoodWe states the alarm clears automatically when grid power returns.
Evidence: User Manual V1.9-2026-06-29 Grid-Tied PV Inverter XS Series (0.7-3.3kW) G3
- Inverter AC breaker offPossible
The AC breaker feeding the inverter is off. You can tell because the house has normal power but the inverter still sees no grid.
Evidence: User Manual V1.9-2026-06-29 Grid-Tied PV Inverter XS Series (0.7-3.3kW) G3
- AC cable disconnectedPossible
The manual lists a disconnected AC cable. Suspect it when the house has power and the breaker is on but the code stays; an installer checks it.
Evidence: User Manual V1.7-2026-08-20 Grid-Tied PV Inverter XS Series 0.7-3.3kW · User Manual V1.9-2026-06-29 Grid-Tied PV Inverter XS Series (0.7-3.3kW) G3
Virtual technician
Does Utility Loss still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
User Manual V1.7-2026-08-20 Grid-Tied PV Inverter XS Series 0.7-3.3kW
GoodWe Technologies Co., Ltd. · 2026 · manual
- 2
XS SERIES USER MANUAL Ver2.6 EN
GoodWe Technologies Co., Ltd. · 2022 · manual
- 3
User Manual V1.9-2026-06-29 Grid-Tied PV Inverter XS Series (0.7-3.3kW) G3
GoodWe Technologies Co., Ltd. · 2026 · manual
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