- Solar and energy
- Solar inverter
101
SMA inverter event 101
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
High
Quick answer
SMA defines event 101 as: Grid voltage or impedance at the inverter connection point is too high; the inverter disconnected. The useful next discriminator is grid voltage by phase and point-of-connection impedance. Preserve the event before any reset.
Safety first
Stop and check this first
- Do not change grid-code, voltage or frequency protection settings without installer and grid-operator authorization. Do not measure live boards yourself.
Safe checks you can perform
- Preserve the exact event context
- Collect one safe discriminator
- Respect the electrical stop point
Leave these tasks to a qualified professional
- Do not attempt this professional task: Measured handoff for SMA 101
What a technician must be able to justify
A technician is coming
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.
Measured handoff for SMA 101
What they doA qualified electrician should log phase voltages, frequency and connection-point impedance under the same export condition, then compare them with the active grid code and utility limits.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Checks and evidence, step by step
Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
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Preserve the exact event context
No special tools
Procedure
Save event 101, timestamp, inverter model/serial, firmware, red-LED state, affected phase/string, power and weather before clearing anything.
Do not change grid-code, voltage or frequency protection settings without installer and grid-operator authorization. Do not measure live boards yourself.
Evidence: SMA Sunny Tripower X event messages
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Collect one safe discriminator
No special tools
Procedure
From the monitoring interface and a safe location, note whether other premises lost power and whether the event repeats at a particular export level or time. Record grid voltage by phase and point-of-connection impedance; do not change multiple parameters or circuits at once.
Do not change grid-code, voltage or frequency protection settings without installer and grid-operator authorization. Do not measure live boards yourself.
Evidence: SMA Sunny Tripower X event messages
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Respect the electrical stop point
No special tools
Procedure
If supply to the site is abnormal, involve the grid operator; if only the inverter repeats the event, a qualified electrician must measure at the connection point.
Do not change grid-code, voltage or frequency protection settings without installer and grid-operator authorization. Do not measure live boards yourself.
Evidence: SMA Sunny Tripower X event messages
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Solar and energy
- Brand
- SMA
- Product type
- Solar inverter
Known code variants
- 101 Cambio de protocolo
- 101 Cambio di protocollo
- 101 Changement de protocole
- 101 Protokollwechsel
- 101 Switching Protocols
- cargador Wallbox 101
- caricatore Wallbox 101
- chargeur Wallbox 101
- code Wallbox 101
- codice Wallbox 101
- código Wallbox 101
- erreur Wallbox 101
- error Wallbox 101
- errore Wallbox 101
- événement SMA 101
- evento SMA 101
- HTTP 101
- HTTP status 101
- inversor SMA 101
- inverter SMA 101
- onduleur SMA 101
- SMA Ereignis 101
- SMA event 101
- SMA inverter 101
- SMA Wechselrichter 101
- Sunny Tripower X 101
- Wallbox app code 101
- Wallbox charger 101
- Wallbox error 101
- Wallbox Fehler 101
- Wallbox Fehlercode 101
- Wallbox Ladegerät 101
What it means
Official meaning: Grid voltage or impedance at the inverter connection point is too high; the inverter disconnected. Decision boundary: capture grid voltage by phase and point-of-connection impedance. A qualified electrician should log phase voltages, frequency and connection-point impedance under the same export condition, then compare them with the active grid code and utility limits.
Warnings and stop conditions
- Mediumsource verified
Do not change grid-code, voltage or frequency protection settings without installer and grid-operator authorization. Do not measure live boards yourself.
Evidence: SMA Sunny Tripower X event messages
Symptoms and causes
Probable causes · in order
- What the SMA event establishesConfirmed
The official Sunny Tripower X manual defines event 101: Grid voltage or impedance at the inverter connection point is too high; the inverter disconnected.
Evidence: SMA Sunny Tripower X event messages
- The observation that changes the next branchPossible
Capture grid voltage by phase and point-of-connection impedance. If supply to the site is abnormal, involve the grid operator; if only the inverter repeats the event, a qualified electrician must measure at the connection point.
Evidence: SMA Sunny Tripower X event messages
Virtual technician
Does 101 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
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SMA Sunny Tripower X event messages
SMA Solar Technology AG · 2026 · official_doc
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