The Compressor Start Device is an OEM replacement part for GE refrigerators. This start device is responsible for powering on and initiating the refrigeration compressor during each cooling cycle.  Causes of a bad start device can include wear and tear over time, exposure to fluctuations in power or voltage that can damage electronic components, or accidental damage that impairs the device's ability to reliably power the compressor. Symptoms of a bad start device include:  The refrigerator not cooling properly or only cooling intermittently The compressor not turning on at all or making unusual sounds when powered on   Warm air blowing from vents inside the refrigerator or freezer sections Frost or ice building up in areas it typically would not   This OEM GE part is also compatible with Hotpoint, RCA, and some Kenmore models. This part fixes the following symptomsWon't startWR09X10107 (AP3884299) replaces 1169589, AH1020294, EA1020294, PS1020294, WR07X10078, WR08X10068, WR08X10075, WR08X10085.