Genuine Whirlpool Replacement Part

This timer (part number WP3977678) is for dryers.

Timer controls the electrical components and the duration of the dryer cycles.

Unplug the dryer before installing this part. Wear work gloves to protect your hands.

Special NOTE: In an electric dryer, if the timer advances in the timed dry cycle but not the automatic moisture sensing cycle, unplug the dryer and check continuity through the resistor using a multimeter. The resistor connects to the timer through the orange wire. Replace the resistor (part number 279872) if you measure infinite resistance. If the timer still doesn't advance in the moisture sensing cycle after replacing the resistor, replace timer.

Part Number WP3977678 replaces 3977678, 3977678R