KARCHER Window Vac Not Charging? – Easy Steps + Video Guide

Is your glass window lying dirty because your KACHER Window Vac is not charging?

Don’t worry; we shall troubleshoot the issue.

The issue is probably with the circuit module or battery because of moisture inside the cabinet.

But you can still fix the charging issue of your KARCHER Window cleaner. In this guide, I’ll explain how to fix Karcher Window Vac not charging issue.

Also Read: How To Fix Dyson Vacuum Not Charging?

Why is My KARCHER Window Vac Not Charging?

KARCHER Window Vac Disassembly

KARCHER Window Vac is a handy tool that makes glass cleaning easy. It works great for vacuuming condensed moisture from windows, mirrors, and car windshields.

If your KARCHER vacuum is not charging, it could be due to multiple reasons. The most common reason is a faulty charging port, a faulty circuit module, and a defective battery.

It happens due to moisture inside the circuit box where all electronic and mechanical parts are installed.

Also Read: How To Fix Rooba Vacuum Not Charging

How To Fix KARCHER Window Cleaner Not Charging?

KARCHER Window Vac Charging

Try these solutions if your window vacuum cleaner won’t charge when plugged in-

1- Clean charging port

KARCHER Window Vac Charging Connector

A dirty charging port is one of the most basic reasons for charging issues. Use a can of compressed air to clean the charging port. Also, check if any dirt or debris is blocking the flow of electricity.

Also Read: How To Fix Xiaomi Roborock Not Charging

2- Use another power outlet

I know it’s basic troubleshooting, but often problems are associated with the wall outlet, and we keep troubleshooting the device.

If you have cleaned the charging port, try plugging your charger into another power outlet. It could be possible that your power outlet is faulty.

Also Read: How To Fix iLife Robot Not Charging

3- Try a new charger

KARCHER Window Vac Charger

Before going to an internal issue, ensure that your charger is functioning properly.

If you’ve another KARCHER charger at home, try that. If the problem still persists, then it’s time to open up your KARCHER window vacuum.

Also Read: How To Fix Lefant Robot Not Charging

4- Check the circuit module

KARCHER Window Circuit Module

The next thing you have to check is the circuit module. For that, you need to disassemble your window vac.

Here you need a few tools to open up your KARCHER vacuum cleaner. You should have a set of screwdrivers, safety gloves, a knife, and some dry clothes.

Read Next: How To Fix Shark Vacuum Robot That Won’t Charge

YouTube video
  1. First of all, detach the vacuum head apart from the device.
  2. Remove all the rubber covering with the help of a knife (do not cut them because we’ll use them again).
  3. Unscrew everything and separate both covers carefully.
  4. Remove the logic board outside.
  5. Check the battery with a multimeter and replace it if it’s faulty.
  6. Check if there are any broken wires on the logic board and fix them.
  7. Clean the logic board with rubbing alcohol and wipe it with a dry cloth.
  8. Oil the electric motor.

Now, connect the charger and check if your window vacuum battery is charging or not. If not, you must visit a professional repair shop or get a new one.

Read Next: How To Fix Ecovacs Robot Vacuum Not Charging


I hope this guide was helpful and you were able to fix your KARCHER Window Vac not charging issue. Please let me know in the comments section below if you have any doubts or queries. I would be happy to help.​

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About Daniel

Daniel is a tech enthusiast and repair technician who loves experimenting with various gadgets and home appliances. On this blog, he shares a troubleshooting guide for software and hardware faults.

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