°µÍø½ûÇø

Unless you are able to fix the issue yourself, I would strongly suggest you get someone qualified.

The system is very simple, just a switch, weights, and a float, but not knowing what you're doing us an effective way to accidentally commit suicide.

It's mains electricity, thus should be treated with caution.

@Fred

It is the pump that takes water into the house & apparently easy to change - took a worker about 15 minutes last time. The problem is trying to find someone qualified who is available.

It's easy to do, but dangerous if you are unaware.

Best guess is it's the switch in the tank

I can't suggest places , but it's an electricians job

Poor quality pump can last at least 3 years. But poor quality job doesn't last long. We had similar problem 1.5yrs ago (not my house). We found out there was a leaking from a worn out pipe. After my neighbor fixed the pipe, the pump working properly. Your pipes may not be well connected. Or the taps may have dripping problem. But it also could be the controller doesn't work properly. All you need is a certified plumber, not engineer or scientist.

There are few things to go wrong in such a simple system:

1. It could be that the tank is emptying but the motor is damaged so cuts out.
2. It could (more likely) be the switch in the tank. These are exposed to weather so the most likely to fail. This possible fault best describes your issue.
3. A slow leak in the tank or one of the pipes is also possible. That would also cause the same problem. If that is the fault, assuming water flow is roughly even, the pump switch should trip at the same number of minutes every time.

You have a leak somewhere in your water network. Have the leak checked before you change the pump.