Hayward keypad error 40

Welcome to TFP?

What model number pump?

Is the pump connected to any automation?
 
Press the Menu button until the Diagnostic screen appears. Then, press the “>” and record the information that displays on each press of the > button. When you get to the Event Log, press the “+” button to view the last 20 error or trip conditions.

Then, turn off the breaker for 20 minutes, then restore power and see if the error goes away.
 
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