- Solar and energy
- Solar inverter
NO-GRID
Solis NO-GRID on a solar inverter: no grid voltage detected
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
The Solis inverter detects no grid voltage (alarm 1015) and is not exporting. Check whether you have power at home and whether the inverter AC breaker is on. Solis says to turn the inverter off, wait 5 minutes and restart it.
Safety first
Stop and check this first
- If the AC breaker trips every time the inverter starts generating, do not keep resetting it: Solis handles that case by checking the breaker rating and the connections.
Safe checks you can perform
- Alarm in the app or on the display
- Power at home and inverter AC breaker
- Restart with a 5 minute wait
- Grid voltage and AC connections
Leave these tasks to a qualified professional
- Do not attempt this professional task: Voltage measurement at the AC gland
- Do not attempt this professional task: AC connections and breaker rating
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.
Voltage measurement at the AC gland
What they doThe installer measures phase to neutral, phase to earth and neutral to earth at the AC gland of the single phase inverter, as Solis requires.
They must show youthe values measured at the AC gland against the model specification.
In writingwhere it was measured and the values obtained.
AC connections and breaker rating
What they doThe installer checks for loose contacts at the AC connector, AC board and meter side, and whether the breaker has the recommended rating.
They must show youclear photos of the AC board and connector, and the breaker rating against the recommended one.
In writingwhat was tightened or replaced and the generation test afterwards.
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.
Alarm in the app or on the display
- Who:
- you, no tools.
- How:
- in the SolisCloud app open the alarm page; on models with an LCD, open Advanced Information with code 0010 and select Alarm Message, as Solis explains.
- Result that matters:
- that the alarm is NO-GRID (code 1015) and its time.
- 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 AC breaker.
- Evidence to keep:
- screenshot or photo of the alarm with date and time.
Evidence: User Manual for S6 Series Grid Inverter Version 1.1, Release Date: 04,2024 · How do I get to the alarm messages?
Power at home and inverter AC breaker
- Who:
- you, looking at the panel without opening covers or touching wiring.
- How:
- check that you have power at home and find the AC breaker labelled for the inverter in the panel; see whether it is on.
- Result that matters:
- whether the grid is present and the breaker is on.
- If there is no power at home:
- the cause is external; wait for supply to return.
- If the breaker is off:
- switch it on once; if it trips again, leave it and call the installer.
- Evidence to keep:
- photo of the panel and time of the outage, if any.
Evidence: User Manual for S6 Series Grid Inverter Version 1.1, Release Date: 04,2024 · 1015 - NO-GRID (AC MCB Tripping)
Restart with a 5 minute wait
- Who:
- you, if you have app access; otherwise the installer.
- How:
- in the app, turn the inverter off in Settings with Power OFF, wait 5 minutes and start it with Power ON, as the Solis manual states.
- Result that matters:
- whether the inverter generates again without the alarm.
- If it works again:
- it was a one-off grid event; watch whether it repeats.
- If the alarm persists:
- Solis says to contact your distributor or the service centre.
- Evidence to keep:
- time of the restart and status after start-up.
Evidence: User Manual for S6 Series Grid Inverter Version 1.1, Release Date: 04,2024
Grid voltage and AC connections
- Who:
- a qualified installer or electrician.
- How:
- at the inverter AC gland measure phase to neutral, phase to earth and neutral to earth, and check for loose contacts at the AC connector, board and meter side.
- Result that matters:
- whether voltage reaches the inverter and whether any connection is loose.
- If voltage is missing at the inverter while the house has power:
- the fault is between the board and the inverter.
- If voltage is correct and the alarm stays:
- Solis asks for information and alarm readings to assess the unit.
- Evidence to keep:
- measured values, photos of the AC board and the serial number.
Measuring mains voltage and opening the board or AC connector is work for a qualified installer or electrician.
Evidence: 1015 - NO-GRID (AC MCB Tripping)
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
- Solis (Ginlong)
- Product type
- Solar inverter
Known code variants
- inversor Solis sin red
- Solis alarm 1015
- Solis alarma 1015
- Solis inverter no grid
- Solis NO-GRID
- Solis NO-Grid 1015
What it means
Solis describes NO-GRID as no grid voltage: the inverter sees no voltage on its AC connection. Its service team checks the grid, the AC breaker, loose contacts at the AC connector, the AC distribution board and the meter side, and whether the breaker rating is the recommended one when it trips during generation. The code does not separate a utility outage from an open protection device or a loose connection, so it does not point to a specific part.
Warnings and stop conditions
- Mediumeditorial warning
If the AC breaker trips every time the inverter starts generating, do not keep resetting it: Solis handles that case by checking the breaker rating and the connections.
Evidence: 1015 - NO-GRID (AC MCB Tripping)
Symptoms and causes
Probable causes · in order
- Grid absent or abnormalPossible
Solis asks you to check whether the connected grid is normal. You can tell because power is also off at home or the utility reports an outage.
Evidence: User Manual for S6 Series Grid Inverter Version 1.1, Release Date: 04,2024
- AC breaker open or trippedPossible
The inverter AC breaker is off or trips. You can tell because the house has power but the inverter sees no voltage on its output.
Evidence: 1015 - NO-GRID (AC MCB Tripping)
- Loose contact in the AC connectionPossible
Solis checks for loose contacts at the AC connector, the AC distribution board and the meter side. Suspect it when the grid is present and the breaker is on but the alarm stays.
Evidence: 1015 - NO-GRID (AC MCB Tripping)
- Breaker with the wrong ratingPossible
If the breaker trips when the inverter starts generating, Solis asks for its rating to be checked against the recommended value and replaced if needed.
Evidence: 1015 - NO-GRID (AC MCB Tripping)
Virtual technician
Does NO-GRID 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 for S6 Series Grid Inverter Version 1.1, Release Date: 04,2024
Ginlong (Ningbo) Technologies Co., Ltd. (Solis) · 2024 · manual
- 2
1015 - NO-GRID (AC MCB Tripping)
Ginlong (Ningbo) Technologies Co., Ltd. (Solis Service Center) · 2025 · official_doc
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