Marc,
Most likely the pump is bad, but you need to make sure the you have 240 Volts AC at the two hot inputs to the pump. (L1 and L2).
Use a voltmeter and measure between L1 and L2 and confirm that you 240 volts AC. Do not measure L1 to ground and then L2 to ground as this can give you a false reading. Only measure between L1 and L2 right at the pump.
It there anything between the circuit breaker and the pump?
Thanks,
Jim R.