Roborock Robot Vacuum Error Code 28: How to Fix It

Q: What does Roborock Error Code 28 mean?

Roborock Error Code 28 means the charging contacts on the home base dock are dirty or not making proper electrical contact with the robot vacuum. Cleaning the metal pins on both the dock and the robot usually fixes this error within minutes.

Q: How often should I clean my Roborock home base charging contacts?

Roborock recommends cleaning the charging contacts on both the home base and the robot vacuum at least once a month, or more frequently if you have pets or a dusty home environment. Regular cleaning prevents Error Code 28 and ensures reliable charging.

Q: Can I use water instead of isopropyl alcohol to clean the contacts?

No. You should only use isopropyl alcohol (70% or higher) on the charging contacts. Water can cause corrosion and potentially damage the electrical components. Isopropyl alcohol evaporates quickly and is safe for electronics.

Q: Why does my Roborock keep getting Error Code 28 even after cleaning?

If Error Code 28 keeps returning after cleaning, the charging pins may be physically bent, worn down, or deeply corroded. The floor surface under the dock may also be uneven, preventing full contact. Try repositioning the dock on a flat hard floor, and inspect the pins closely for physical damage. If damage is visible, the home base dock may need to be replaced.

Q: Does Roborock Error Code 28 mean my robot vacuum won't charge at all?

Yes, when Error Code 28 is active, the robot vacuum cannot charge properly because the electrical connection between the dock and the robot is broken or unreliable. The vacuum will alert you via the app and a voice notification, and it will stop operating until the issue is resolved.

Abstract

Roborock Error Code 28 means the metal charging contacts on your robot vacuum's home base (dock) are dirty, corroded, or blocked, preventing the vacuum from making a proper electrical connection to charge. This is a common issue caused by dust buildup, pet hair, and debris that accumulates on the dock over time. The good news is that this is one of the easiest Roborock errors to fix — a simple cleaning of the charging contacts usually resolves it in just a few minutes.