If you have the model year about right, what you have is a Bullfrog Spa Model 562. You can confirm on the manufacturer's plate inside the equipment compartment.
Based on your description, what is most likely causing the pump 1 not to come back on for a while is the internal thermal overload in the pump motor. It activates when the pump motor overheats and automatically resets when it cools down.
With you occasionally getting a DRY or DR error when you are in the spa and the problem you describe, it could be a couple of things.
It could be a filter issue in that if the filters are not clear, the flow is reduced, the control senses this and turns off the heater, but it will also cause the pump to overheat because the water cools it.
It could be a pump issue. It may be time to think about replacement.
It could be a control issue. When you try to turn on the pump, does it show on the indictor that it is running or not. If not, then it may be a control issue.
It could be an issue with auxiliary pump controls. If your spa has these (small pump buttons on the sides) then see if they will turn on the pump.
This is a good start for troubleshooting. Check us out for any additional help. You can also see your owners manual there.
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