Why won’t an automatic window washing robot start after charging?
Answer
If a window-washing robot never starts after charging, confirm a true full charge, safety sensors, and the correct power button sequence before requesting a replacement from the seller.
Before you start: stop right away if…
- Always use the safety tether on window robots to prevent falls.
- Do not bypass safety sensors; doing so can cause drops from windows.
Follow these steps
Confirm charging status with the included adapter
Connect the original charger and watch the charge indicator until it shows the full/ready state described in the manual, not only a short plug-in.
You should see: The indicator reaches a ready state, or it never completes charging.
Follow the exact power-on and Start sequence
Power the unit on first if there is a separate power button, attach it as instructed, then press Start. Some models ignore Start until sensors detect glass.
You should see: The robot starts, or it still stays inert after the correct sequence.
Check safety sensors and locks
Inspect for a transport lock, safety switch, or dirty edge sensors that prevent motor start, and clean sensors lightly as the manual allows.
You should see: A lock or dirty sensor is found, or everything looks clear.
Try a controlled test on safe glass
Test on a low interior window with the safety tether attached per instructions. Never begin with a high exterior window while diagnosing.
You should see: The unit runs on the test glass, or it still will not start.
Start a return or replacement with evidence
If it never powers into a cleaning cycle after a full charge and correct startup, contact the seller with photos/video and request replacement or refund under the purchase terms.
You should see: A return or replacement case is opened.
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Extra tips
What to look for: No movement when Start is pressed, charge-light behavior, and any safety strap, sensor, or child-lock indicators.
Before you change anything: Charge only with the included adapter. Read the quick-start safety steps for sensor calibration and attachment. Keep packaging for a possible return. Do not use the robot on high windows until it starts reliably on a safe test surface.