- Solar and energy
- Solar inverter
F140
GoodWe F140 on solar inverter: smart meter link lost
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
GoodWe warning F140 (Meter Comm Loss) and a double-blinking COM LED mean the hybrid inverter has lost contact with the smart meter while anti-backfeed is enabled. Do not open the electrical panel: check the app and ask your installer to inspect the RS485 meter cable.
Safety first
Stop and check this first
- The smart meter and its CT clamps sit inside the live AC distribution board: never remove panel covers or touch meter wiring yourself.
Safe checks you can perform
- Check the COM LED blink pattern and F140 in the app
- Look through the panel window to see if the meter is lit
- Note whether battery discharge stopped or settings changed
Leave these tasks to a qualified professional
- Do not attempt this professional task: Smart meter to inverter communication wiring inspection
- Do not attempt this professional task: CT clamp orientation and anti-backfeed setting verification
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.
Smart meter to inverter communication wiring inspection
What they doAfter de-energizing the inverter per GoodWe's shutdown steps, the installer inspects the RS485 cable, connectors and pin assignment between the smart meter and the inverter.
They must show youthe inspected communication connectors, the COM LED lit solid on and live meter readings in SolarGo.
In writingwhich meter cable termination was remade and the meter power reading once communication returned.
CT clamp orientation and anti-backfeed setting verification
What they doThe technician checks the smart meter CT connections and arrow direction and verifies the anti-backfeed configuration in the SolarGo app.
They must show youthe verified CT direction, the anti-backfeed setting in SolarGo and normal battery discharge under load.
In writingthe export control setting left active, the CT check result and confirmation that F140 cleared.
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.
Check the COM LED blink pattern and F140 in the app
- Who:
- you, looking at the inverter indicator panel and the SolarGo or SEMS+ app without opening covers.
- How:
- see whether the COM light blinks twice (BMS normal, meter disconnected) or is off, and check the alarm list for code F140.
- Result that matters:
- confirming that the communication loss involves the smart meter rather than the battery BMS.
- If COM blinks twice and F140 is active:
- the BMS link is fine and the fault lies on the smart meter side.
- If COM blinks once:
- the manual states that meter communication is normal and BMS communication has failed.
- Evidence to keep:
- a short video of the COM LED blinking and a screenshot of warning F140 in SolarGo or SEMS+.
Evidence: User Manual V2.0-2026-09-20 Hybrid Inverter ET Series / ET Plus Series 5.0-10.0kW and AC-Coupled Inverter BT Series 5.0-10.0kW · User Manual V2.3-2026-05-22 Hybrid Inverter GW3600-EH to GW6000N-EH
Look through the panel window to see if the meter is lit
- Who:
- you, looking at the consumer unit from outside without removing any cover or touching wires.
- How:
- locate the GoodWe smart meter through the inspection window and check whether its status LEDs are lit or completely dark.
- Result that matters:
- telling whether the smart meter has lost power or only lost its data link.
- If the meter lights are completely off:
- note it down so the electrician can inspect the meter supply circuit.
- If the meter lights are on while F140 stays active:
- the issue points to the RS485 communication cable.
- Evidence to keep:
- an external photo of the electrical panel window showing the smart meter indicator lights.
Evidence: User Manual V2.0-2026-09-20 Hybrid Inverter ET Series / ET Plus Series 5.0-10.0kW and AC-Coupled Inverter BT Series 5.0-10.0kW · User Manual V2.3-2026-05-22 Hybrid Inverter GW3600-EH to GW6000N-EH
Note whether battery discharge stopped or settings changed
- Who:
- you, reviewing home load and battery status in the monitoring app.
- How:
- check whether the battery refuses to discharge when house load is above 150 W, and recall whether anyone recently enabled anti-backfeed or export limit in SolarGo.
- Result that matters:
- giving the installer exact details on parameter changes and storage behavior.
- If anti-backfeed was turned on without a physical meter installed:
- ask the installer to correct the setting in SolarGo.
- If a smart meter is installed and worked before:
- ask the installer to inspect the meter wiring and CT connections.
- Evidence to keep:
- an app screenshot showing house demand above 150 W alongside the battery state.
Evidence: User Manual V2.0-2026-09-20 Hybrid Inverter ET Series / ET Plus Series 5.0-10.0kW and AC-Coupled Inverter BT Series 5.0-10.0kW · User Manual V2.3-2026-05-22 Hybrid Inverter GW3600-EH to GW6000N-EH
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
- fallo comunicación smart meter GoodWe EH ET
- GoodWe COM LED double blink
- GoodWe EH F140 warning
- GoodWe F140
- GoodWe Meter Comm Loss
- GoodWe smart meter communication failure
- LED COM doble parpadeo GoodWe
- Pérdida de comunicación del medidor GoodWe
What it means
In the GoodWe EH Series hybrid inverter user manual (V2.3-2026-05-22), warning code F140 'Meter Comm Loss' occurs after the anti-backfeed function is enabled when the smart meter is not connected or the communication cable between meter and inverter is wired incorrectly. In both the EH and ET/BT manuals (V2.0-2026-09-20), a double blink on the COM LED confirms that BMS communication is normal while meter communication is disconnected, which can also stop the battery from discharging to home loads. The code alone never proves the meter or inverter is defective.
Warnings and stop conditions
- Highsource verified
The smart meter and its CT clamps sit inside the live AC distribution board: never remove panel covers or touch meter wiring yourself.
Evidence: User Manual V2.0-2026-09-20 Hybrid Inverter ET Series / ET Plus Series 5.0-10.0kW and AC-Coupled Inverter BT Series 5.0-10.0kW · User Manual V2.3-2026-05-22 Hybrid Inverter GW3600-EH to GW6000N-EH
Symptoms and causes
Probable causes · in order
- Anti-backfeed enabled with no meter connected or poweredCommon
GoodWe notes that warning F140 only appears after anti-backfeed is enabled and lists a disconnected or unpowered smart meter as the first cause.
Evidence: User Manual V2.3-2026-05-22 Hybrid Inverter GW3600-EH to GW6000N-EH
- Incorrect communication cable connection to the inverterCommon
The second official cause of F140 is an incorrect, loose or damaged communication cable between the smart meter and the GoodWe inverter.
Evidence: User Manual V2.0-2026-09-20 Hybrid Inverter ET Series / ET Plus Series 5.0-10.0kW and AC-Coupled Inverter BT Series 5.0-10.0kW · User Manual V2.3-2026-05-22 Hybrid Inverter GW3600-EH to GW6000N-EH
- Smart meter or CT connection and direction issuePossible
In the ET/BT manual (section 9.4, item 36), GoodWe points out that faulty smart meter or CT connections prevent the battery from discharging when load exceeds 150 W.
Evidence: User Manual V2.0-2026-09-20 Hybrid Inverter ET Series / ET Plus Series 5.0-10.0kW and AC-Coupled Inverter BT Series 5.0-10.0kW
Virtual technician
Does F140 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
GoodWe Technologies Co., Ltd. · 2026 · manual
- 2
User Manual V2.3-2026-05-22 Hybrid Inverter GW3600-EH to GW6000N-EH
GoodWe Technologies Co., Ltd. · 2026 · manual
- 3
Manual del usuario V2.3-2026-05-22 Inversor híbrido GW3600-EH a GW6000N-EH
GoodWe Technologies Co., Ltd. · 2026 · manual
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