No. there is no reset button, that you can manually press to reset it. There is an internal "thermal overload switch", which is an automatic reset. So if your pump motor is overheating, it will turn off, but once it cools down enough, it will reset automatically. some styles of the Dynamo, have a toggle switch at the back underneath, which is simply an on and off switch.
Answers & Comments
No.
there is no reset button, that you can manually press to reset it. There is an internal "thermal overload switch", which is an automatic reset. So if your pump motor is overheating, it will turn off, but once it cools down enough, it will reset automatically.
some styles of the Dynamo, have a toggle switch at the back underneath, which is simply an on and off switch.