My wavemaker is running backwards.

Important: Disconnect mains electricity supply before handling or attempting maintenance. Always fully read and check the troubleshooting section within your product instruction manual. 

The first thing you need to do to fix the issue is open the unit up and take a look at the impeller and shaft. Please inspect these parts for any damages or blockages and clogging. You will need to remove the motor head and check that the impeller and the shaft are intact, unblocked and in place. If you replace them securely this should resolve the issue you are experiencing.

If this does not solve the problem, please contact our customer services team who will be happy to advise further.