Just wanted to know what it means with flashing lights on Hot springs tub, Red and/or green. I think my problem has already been fixed by Dan suggesting a new circulateor pump.

Flashing Red indicates electronic heater high limit tripped
Flashing Green indicates bad thermistor (though a bad circ pump will fool it, when in fact, it's the faulty circ pump that's the cause of the out of range thermistor value).