20 Most Recent Sta Rite Sta - Rite Maxeglas / Duraglas Pump Basket Questions & Answers

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Something is causing the pump motor to overheat and shut off to avoid permanent failure.

The motor is likely failing. It may be a small part such as the capacitor or the starting switch, but could also be more severe such as the winding itself. You will also want to examine the shaft to see if it is damaged, bent, or the bearings failing or seized. If you are not familiar with testing these parts your best bet would be a local electric motor repair shop to see if the motor can be repaired or if it would need to be replaced. *All of this assumes this is an older/existing installation that has worked properly in the past and is just now showing signs of failure. If this is a new install look at your line voltage versus the voltage the motor is set to accept. If feeding 115 to a motor wired to be on 230 you will also get the situation you describe.

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John

https://www.youtube.com/watch?v=V45_D0l2s5A https://www.youtube.com/watch?v=e8RMfw4nZos https://www.troublefreepool.com/threads/max-e-therm-400-service-system-light-on.52433/

Check the control wire that might be connected to the control fuse. If that wire is open the unit will only cycle thru the board information and the sit dormant until the control is called for.

Try changing the Thermal Regulator. You could just remove the T/R as a test and replace as necessary.

replace the mechanical shaft seal. check impeller and diffuser for damage . prime pump after any repair

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Need the model and serial #, it'll have exploded views of the different subsections. All.parts on the exploded views are numbered & correspond to a catalog page alongside the picture, with the cost
posted. I've used it repeatedly, very accurate, prices are competitive.

That unit has specific instructions for water temp operation at 60 or lower. The display also can show diagnostic info and there are indicator lights for diagnostics. Do you have any of those showing any errors? If the temp is jumping from 91 to 104 instantly and then back down to 91 instantly, this is a wiring issue or a bad thermistor. Check the wiring and use an OHM meter to check the thermistor, it should have a chart that shows a resistance at a certain temp. There is a limit switch right next to the thermistor, Make sure it is not shorting out with that.