[Fix my robot](https://robotsforthat.com/fix/) / [Greenworks Optimow](https://robotsforthat.com/guides/greenworks-optimow-error-codes/) / Charging station fault (red LED flashing)
● Checked Nov 12, 2026 From Greenworks support

Greenworks Optimow

# Greenworks Optimow "Charging station fault (red LED flashing)": what it means and the fix

Steps **2**

Tools **None**

Parts None

Works for Greenworks Optimow 25H and 50H (also Optimow 25 and 50).

Short answer Red light. On the charging station, not the mower.
**What it means:** A flashing red LED on the charging station means an electronic fault in the charging station or its power supply unit. Greenworks gives no home fix.

**Quick fix:** Contact your dealer or the Greenworks helpline at 1-855-345-3934.

## Fix it in 2 steps

- Contact your dealer or the Greenworks helpline at 1-855-345-3934. Done?
- Have your receipt and the product serial number ready. Did it work?

Great, it is fixed. Bookmark this page in case it comes back.

**Still showing Charging station fault (red LED flashing)?**

Right away. Greenworks lists no owner fix for this light. Call 1-855-345-3934 or contact your dealer, with your receipt and serial number ready. [Greenworks support →](https://www.greenworkstools.com/)

## Parts that fix this

[Charging dock For Greenworks Optimow on Amazon Check price →](https://www.amazon.com/s?k=Greenworks%20Optimow%20charging%20dock&tag=robotsforthatai-20) Check the part fits your model. Affiliate links: we may earn a commission at no cost to you.

## Why it happens

- Electronic fault in the charging station
- Fault in the power supply unit

## Other Greenworks Optimow errors

[Red Error LED flashing ›](https://robotsforthat.com/fix/greenworks-optimow-red-error-light-flashing/)[Recovery mode (green Operating LED flashing) ›](https://robotsforthat.com/fix/greenworks-optimow-green-light-flashing-recovery-mode/)[PIN required (yellow Security LED flashing) ›](https://robotsforthat.com/fix/greenworks-optimow-yellow-light-flashing-pin/)[Boundary wire broken (charging station blue LED flashing) ›](https://robotsforthat.com/fix/greenworks-optimow-charging-station-blue-light-flashing/)[Charging station LED off ›](https://robotsforthat.com/fix/greenworks-optimow-charging-station-light-off/)[All 6 Greenworks Optimow codes →](https://robotsforthat.com/guides/greenworks-optimow-error-codes/)

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## Sources

- [Greenworks: Optimow 25H, 50H, 25 and 50 operator's manual, troubleshooting and indicator LEDs](https://www.greenworkstools.com/cdn/shop/files/optimow_om-v2.pdf)
- [Greenworks: Optimow 25H and 50H robotic lawn mower manual (US, via Lowe's)](https://pdf.lowes.com/productdocuments/00a854c8-a140-44d7-9158-56b33a6fa189/65263256.pdf)

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