4 flashes -
Mode shifter circuit failed. If this error code comes up the motor will still operate but if the mode shifter circuit has failed the washer will not agitate properly. To check the mode shifter, first start the washer. Then when the washer starts agitating, look at the tub from the outside. If the whole inside tub is turning back and forth while in agitate, the mode shifter is bad. If the mode shifter is not bad then clear the code as described below and if the code reoccurs replace the motor. See the section on how to check the sifter coil below for more on this.
All GE HydroWave washers have a shaft and tube as opposed to the old transmission. How this works is there is a sifter that shifts the washer from wash to spin mode. This is done with the sifter coil. The sifter coil is basically a solenoid that pulls up a set of gears that lock into another set of gears for wash mode and for spin mode it simply disengages. In other words, with the gears disengaged the spin basket turns with the agitator and with the gears engaged the agitator spins independently from the spin basket.
When the coil fails it can no longer engage the gears, therefore the gears stay disengaged all the time. This will cause the spin basket to turn with the agitator even during the wash cycle. This will make the washer become noisy during wash and it will not wash as it is designed to. Not to mention this is very rough on the machine in general because it is not designed to handle a full tub of water turning back and forth continually. Also this will cause motor to flag the four-flash error code, which stands for a failed shifter.
If your washer has the symptoms I described above more than likely the sifter has failed but there is a very slim chance the motor is causing this problem by not powering up the coil for wash mode. Check the sifter coil and if it is bad replace it and if not replace the motor. Follow these steps to check the sifter coil.
1. Disconnect power from the washer.
2. Remove the front off the washer.
3. Disconnect the sifter coil from the motor. It will be the only plug with only two terminals. It will also be the third plug from the left. (see picture below)
4. Then test for continuity across the two wires. You should get around 98 ohms, the important thing is if it is open or not. If it is open replace the shaft and tube and if it is around 98 ohms replace the motor.