The Main Control Board is an OEM part for Frigidaire dryers. It is the "brain" that regulates all dryer functions and features like sensor drying and temperature control. Situated inside the dryer where it receives constant vibrations from spin cycles, the control board faces significant stresses over time. Causes of failure typically relate to standard component degradation. Symptoms of a problematic main control board include: Unresponsive or non-functional controls Inability to select cycles or change temperature Dryer fails to start, heat or tumble clothes This OEM Frigidaire part is also compatible with Electrolux, Gibson, Kelvinator and some Kenmore models.Part Number 137070890NH (AP6890120) replaces 137070890, 4931144, PS12724038.