How Top Load Washing Machine Drain Circuit Works & Its Repair

In this video, we will delve into the inner workings of a top-load washing machine’s/washer drain circuit and guide you through the process of troubleshooting and repairing common issues. First, we’ll explain the fundamental components of the drain circuit, including the drain pump, drain hose, and drain filter. Understanding how these elements work together is crucial for diagnosing problems effectively. Next, we’ll address common symptoms that indicate a malfunctioning drain circuit, such as water not draining properly, unusual noises during the draining process, or error codes displayed on the control panel. By identifying these signs, you’ll be able to pinpoint the specific issue and take appropriate action. We’ll then guide you through a step-by-step repair process, covering tasks like inspecting and cleaning the drain filter, checking for clogs in the drain hose, and troubleshooting the drain pump. We’ll provide useful tips and techniques to ensure a smooth repair experience, even if you have limited technical expertise. Throughout the video, we’ll emphasize safety precautions and highlight potential risks associated with working on electrical appliances. Your safety is our top priority, so please follow all recommended safety guidelines and, if unsure, consult a professional. By the end of this video, you’ll have a comprehensive understanding of how the drain circuit in a top-load washing machine operates and the knowledge to troubleshoot and repair common issues. Don’t let a malfunctioning drain circuit disrupt your laundry routine when you can fix it yourself!

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I will tell you how the top load washing machine  drain circuit works with a diagram and how to fix it If it has a drain problem due to a faulty  circuit. Before working on this circuit board,   you should know where the drain pump wire  connection is installed in the circuit board. You  

Can see this connector here with some wire on it.  And some connections with wires on this connector   as well. This is the main supply of the circuit  board. You will have to find which wires between  

Them are of the drain pump. Here the wires are of  different color codes. And when we go to the back   of this washing machine. The wiring colors on  this connector are different. And surprisingly,   the wire colors beneath this connector have also  changed. So you have to find the drain pump wire  

Well among these wires. And when I go down to  the drain pump. The wiring color of the drain   pump is again different. The wires coming from the  top of the drain pump have different colors. So,   you will have to find the correct colored wires  for the drain pump. Because if you cannot find  

The wires of the drain pump, you won’t be able  to get the wires of the drain pump on the circuit   board. And you won’t be able to tell which area  of the circuit board needs to be repaired. Now  

I will tell you about this circuit board. But  before that, trace the drain pump wires, and   let me explain to you why I am saying that again  and again. The circuit board of the front-load   washing machines seems to be something like this.  But finding the wires in these circuit boards is  

Also important, which makes it easier to fix the  circuit board with drain problem. But how, I will   tell you that in the later section of this video.  The circuit board of the top load washing machine   is packed something like this. Nowadays, the  circuit boards of the front load washing machine  

Are also manufactured by the companies as of the  top loaders. Most of the inverter washing machine   circuit boards. A coat of silicon is put on these  circuit boards. The backside of the circuit board   is also packed. Now, I was stressing about tracing  the correct wire because once you have identified  

The correct wire of the drain pump and which  connector it plugs into, it will be easier for   you to know where to cut the circuit board from  the back to repair it. Now, I will explain to you  

What to fix in the circuit board, but before  that, you should know that it depends on the   circuit board you are repairing because the design  of the circuit boards is different for different   companies. Complete dip components are used in  this circuit board. No SMD components are used  

In this circuit. But in this circuit board, most  of the components are SMD. Just for controlling   the motor, the dip package of triac are used.  The wire of the drain pump I found was attached  

To this connector. So, to fix the drain problem  in the circuit board, I will cut this area of the   circuit board from the back to get access to the  components attached here. This is how we will be  

Able to fix this circuit board. Now, I will tell  you what component to fix in the circuit board   through this diagram; it will help you to fix the  problem. First, which wire was I finding? Let me  

Tell you. This is the wire that I found. This wire  in the circuit board is moving towards the triac.   The live wire is attached directly to the drain  pump. The neutral connection of the drain pump is  

Turned on and off with the help of the switch  in the circuit board. This Triac is a switch.   And to turn this triac on and off, a circuit is  attached. It also has types. Let me explain this.   The drain pump is directly turned on if you  pass electricity through the washing machine.  

This means that the triac is short-circuited  or, with it, the capacitor. Then, this would   be considered a minor fault in the circuit board.  But if the drain pump is turning on while you set   the washing machine on the wash cycle mode, then  let me explain what components could fail. If the  

ULN-2003 or Darlington array is connected between  the triac, and it is possible that if you turn on   the washing machine function, the microcontroller  will pass signals to the ULN2003. And if it is   short-circuited. The wash cycle will keep working,  but the drain pump will also turn on. These  

Signals will pass through the gate of the triac.  This switch will turn on, and the drain pump will   eventually work on the wash cycle continuously.  This is the first possibility of the problem. The   second possibility could be that if no Darlington  is between the triac and microcontroller. The  

Microcontroller is directly attached to the triac  and turns it on. Then, it is possible that the   microcontroller is short-circuited. Why would the  microcontroller be short-circuited? Because if you   are using the machine in a different mode, the  drain pump won’t turn on. But as you select the  

Wash mode. The pins would be connected internally  or externally. This makes both the wash cycle and   the drain pump turn on simultaneously. So  you will have to check whether a helping   component like ULN2003 is connected, and with  it, if any other minor component is also bad,  

Then your circuit board will be fixed perfectly  fine. But if the microcontroller is bad for any   reason. Then, it would be difficult to fix such  a circuit board. You will have to install the   same microcontroller as installed on the  circuit board. Otherwise, you will have to  

Replace the circuit board with a new one. I am  tired now. You can buy me a coffee by visiting   Patreon. Click on the left or right thumbnail to  watch the next videos. And Subscribe. Thank You.