We have a Jandy PHPF1.0 single speed pump that has been turning off when it's in the sun. We noticed this at the beginning of the week when we started the pump up for the first time as part of our pool opening (new to us pool). The pump is probably almost 10 years old - I'm going to guess it's the original pump. It's on the south side of a building, and gets full sun all day.
We've been shading the pump with a big piece of cardboard, but it can't live under cardboard forever.
What does this tell us about our pump? is it on the way out? is there something we could/should do with the pump itself? We are planning to eventually build a roof over the equipment and put up a screen/fence around it (kind of lean-to style, since it's an eyesore, but that's a project for next year, or later.