hi, I have a Hayward h150fd pool heater that won’t stay on setting. When pressing mode button to go to either pool or spa it jumps back to standby immediately. There is no error code Just changed the keypad computer board thinking that might be the problem but wasn’t!!!!. Still does the same thing. Any ideas??
Also, on the rare occasion it will stay on pool or spa setting it doesn’t fire up. Again, no error codes.