A newly installed Copeland-made scroll-type compressor failed in an HVAC system. There are some key observations to be taken into account. 1. The compressor was 4500 Btu/hr higher in capacity than the required 24000 Btu/hr. In the past overloading to such an extent hasn't caused any problem 2. If the motor control relay fails the compressor will run continuously without the condensing fan working resulting in overheating and failure 3. If winding of the compressor motor fails there is a chance of amperage surge and relay failure The question is: what could have been the reason the relay failed first or the compressor failed first?