Could the EMI filter be whats causing my control board to go out? This is the 4th time I have send it in and it blows out as soon as u plug in the washer.
ANSWER Hi. First make sure the polarity is correct on the washers outlet. The wide terminal is the neutral (negative) white wire connection. The narrow one is the hot (positive) black wire connection. The round one singled on the bottom is the ground (safety) green wire connection. The volt meter should read between 117 vac to 122 vac, any lower or higher the unit will not operate correctly. Place the red meter lead in the narrow (hot) positive terminal. Place the black meter lead in the wide (neutral) terminal and read the roper voltage. Then place the black meter lead into the round (ground) terminal and it should also read normal voltage. NOW change the meter red lead and place it into the wide (neutral) terminal, place the black meter lead into the narrow terminal. If you read any voltage there then the outlet wires are reversed in polarity and is a problem. You should not have reverse polarity especially on a front load or a electronically operated washer. Leave the red meter lead in the wide terminal and place the black meter lead into the ground terminal. If you read any voltage there you have a issue there that needs corrected since you have found internal wiring issue. Use the meter to voltage check the EM part # 22003858 input and output voltage. Make sure they match. Make sure a terminal or wire connection is not touching metal frame ground causing the direct short. When you have a "direct short" it will burn a black mark against the shorted area (or another pinched wire) and "tell" on itself making a quick visible area to repair. Look on the EMI filter side cover and concentrate on the internal connections (schematic) to compare them to the units power cord input on correctly and the units internal supply wires connections there. The Smooth input wire will connect to the "L" terminal. The cord "ribbed" wire (neutral) will connect to the "N" terminal. The machine wire will connect to the # 1 terminal. The units wire will connect to the # 2 connection. Polarity is of utmost importance. Disconnect the wires off the E#MI filter. Place the ohm meter in the R x 1 scale and check the L and N terminals. If the meter reads 0- ohms then it is shorted and needs replaced. Ohm the filter 1 & 2 terminals for shorts and replace if needed. measure the cord (unplugged from the wall) all terminals to one another. If there is any continuity then the cord part # 22003062 is shorted. Do the same with the machine wiring to the unit cabinet frame bare green ground. If any wires are shorted then correct the issue or replace the wiring harness involved as well. Thank You.
Answered by AppliancePartsPros.com | Thursday, November 08, 2012