- Solar and energy
- Solar inverter
OV-TEM
Solis OV-TEM on a solar inverter: over temperature alarm
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
The Solis inverter detects ambient temperature that is too high (OV-TEM, alarm 1032, above 60 °C according to Solis) and protects itself. Check for direct sun or blocked ventilation; it must cool down before the alarm clears.
Safety first
Stop and check this first
- Do not cover or wrap the inverter to shield it from the sun: the manual says nothing should be placed against it and air must circulate; a sun shade should be fitted by the installer.
- Do not touch the casing while it runs: the Solis manual warns that some parts may be hot and cause burns.
Safe checks you can perform
- Alarm in the app or on the display
- Sun, clearance and objects around it
- Temperature near the unit and in Running Status
Leave these tasks to a qualified professional
- Do not attempt this professional task: Location and ventilation review
- Do not attempt this professional task: Heatsink cleaning and fan check
- Do not attempt this professional task: Solis diagnosis if the reading does not match
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.
Location and ventilation review
What they doThe installer checks that the location meets the manual (shade, clearances, no closed recess) and proposes a sun shade or a new position if needed.
They must show youthe measured clearances and the sun exposure at the critical hours.
In writingwhat was changed (shade, location) and the result on hot days.
Heatsink cleaning and fan check
What they doWith the inverter off and cool, removes dust from the heatsink with a soft brush as the manual says, and checks that the fan, on models that have one, turns and is not blocked.
They must show youthe heatsink before and after cleaning.
In writingwhat was cleaned or replaced and the operating temperature afterwards.
Solis diagnosis if the reading does not match
What they doIf the displayed temperature does not match the real one, the installer opens a case with Solis support.
They must show youthe comparison between measured and displayed temperature.
In writingthe case number, the diagnosis and whether any part was replaced.
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, with no tools.
- How:
- in the app open the Alarm page, which shows the message, code and solving methods; on models with an LCD, go to Advanced Information with code 0010 and open Alarm Message, as Solis describes.
- Result that matters:
- confirming the alarm is OV-TEM (code 1032) and seeing its times.
- If it appears now and then:
- Solis says it may be a short grid abnormality and the inverter resumes by itself.
- If it repeats often:
- keep the times and move on to the next checks.
- Evidence to keep:
- a 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?
Sun, clearance and objects around it
- Who:
- you, looking at the inverter without touching it while it runs.
- How:
- see whether direct sun hits it at the alarm times, whether boxes or objects lean against or sit on it, whether it is in a closed recess with no air flow, and whether dust has built up on the heatsink. The manual says nothing should be placed against the inverter.
- Result that matters:
- finding anything that stops it from shedding heat.
- If objects lean against it or the recess is closed:
- move the objects without touching the inverter and mention the location to the installer.
- If direct sun hits it or the heatsink is dusty:
- ask the installer for a sun shade or a clean with the unit off.
- Evidence to keep:
- photos of the inverter and its surroundings at the time the alarm appears.
Evidence: User Manual for S6 Series Grid Inverter Version 1.1, Release Date: 04,2024 · 1032 - OV-TEM
Temperature near the unit and in Running Status
- Who:
- you, with a household thermometer near the inverter, without touching it.
- How:
- measure the air temperature next to the inverter and compare it with the value shown under Advanced Information, Running Status, as Solis suggests.
- Result that matters:
- knowing whether it is really too hot or the inverter reading is off.
- If the air is very hot:
- let it cool down; Solis says the alarm will not clear until then.
- If the displayed temperature does not match the real one:
- contact the installer or Solis support.
- Evidence to keep:
- a photo of the thermometer and a screenshot of Running Status with the time.
Evidence: 1032 - OV-TEM
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
- Solis alarm 1032
- Solis alarma 1032
- Solis high temperature alarm
- Solis inversor se calienta
- Solis inverter overheating
- Solis OV TEM
- Solis OV-TEM
- Solis Over Temperature
- Solis OVTEM
- Solis sobretemperatura
What it means
Solis explains that OV-TEM (alarm 1032) is displayed when the inverter detects high ambient temperature, greater than 60 °C. Its service team asks for checks of the fan and heatsink for obstructions, whether the inverter is in direct sunshine, and a comparison of the temperature measured near the unit with the one shown in Advanced Information. The S6 manual adds checking that the location meets the manual, trying to reduce ambient temperature and restarting after fifteen minutes. If the displayed temperature does not match, contact Solis. The code alone never proves that a part is faulty.
Warnings and stop conditions
- Loweditorial warning
Do not cover or wrap the inverter to shield it from the sun: the manual says nothing should be placed against it and air must circulate; a sun shade should be fitted by the installer.
Evidence: User Manual for S6 Series Grid Inverter Version 1.1, Release Date: 04,2024
- Mediumsource verified
Do not touch the casing while it runs: the Solis manual warns that some parts may be hot and cause burns.
Evidence: User Manual for S6 Series Grid Inverter Version 1.1, Release Date: 04,2024
Symptoms and causes
Probable causes · in order
- Direct sun on the inverterCommon
Solis says that in direct sunshine the inverter probably cannot dissipate heat quickly enough; the manual recommends avoiding it or using a sun shade above 40 °C.
Evidence: User Manual for S6 Series Grid Inverter Version 1.1, Release Date: 04,2024 · 1032 - OV-TEM
- Blocked ventilation or heatsinkPossible
Dust on the heatsink, objects leaning against it or too little clearance stop air from flowing. Solis asks for the fan and heatsink to be checked and the manual clearances respected.
Evidence: User Manual for S6 Series Grid Inverter Version 1.1, Release Date: 04,2024 · 1032 - OV-TEM
- Temperature reading that does not matchLess common
If the temperature the inverter displays does not match the one measured near the unit, Solis asks you to contact its support to assess the unit.
Evidence: 1032 - OV-TEM
Virtual technician
Does OV-TEM 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
How do I get to the alarm messages?
Ginlong (Ningbo) Technologies Co., Ltd. (Solis Service Center) · 2025 · official_doc
- 3
Ginlong (Ningbo) Technologies Co., Ltd. (Solis Service Center) · 2025 · official_doc
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