The Control Board Assembly is an OEM replacement part for GE refrigerators. It is responsible for regulating and monitoring all of the refrigerator's critical systems and components such as cooling, temperature control, defrosting processes, lighting functions, and digital displays.  Symptoms of a faulty control board include:  Fluctuating interior temperatures Frost or ice buildup in unexpected areas   Lights or other interior features not working Fault codes or error messages appearing Refrigerator cycles not operating normally Causes for failure can include liquid damage due to leaks over time, shorts from aging electronics or wiring, manufacturing defects, or failed safety sensors and thermostats. This GE replacement part is also compatible with some Hotpoint, RCA, and Kenmore models.WR55X10832 (AP4363645) replaces 1477944, AH2340423, EA2340423, PS2340423.