First thought it was the capacitor that was not allowing compressor to start. Replaced the capacitor. Problem persisted. Ordered replacement starter relay. Installed and appears to have resolved problem. Relatively easy to replace both parts. A bit tight to get hands in to remove and then replace parts. The starter relay part ordered WPW10197428 is not an EXACT replacement part. The starter relay plastic housing is a bit larger than the original. Requires 'adjusting' (bending) a small tab on the compressor housing down to allow fit.