To replace the control board in a dryer:
- Disconnect the power supply to the dryer and start by removing the control panel.
- A small rectangular board (main control board) can be found behind the control panel, with multiple wires running through it and some connected switches.
- Disconnect the wires and label them.
- Unscrew the control board to remove and install the replacement board.
- Reassemble the dryer by reversing the steps, and then reconnect it to a power socket.
- Run a test cycle to check if all the functions are working like before.
- A clothes dryer control board regulates the dryer’s timing, temperature, and overall operation and is typically located behind the dryer’s control panel.
- Over time, the control board can wear out due to several reasons, affecting the dryer’s performance.
- The most common problem that occurs when the control board wears out is that the dryer will not start.
- Read the user manual carefully before attempting to replace the control board on your clothes dryer.
- Check if the dryer is still under warranty, as chances are you might be able to get a free replacement.
- Replacing the control board can be done at home using basic hardware tools. However, you will need to be careful in working out the multiple electrical wires that run through it.
- Take professional help if you are not comfortable with electrical repairs.
What is a control board in a dryer?
A control board in the dryer manages the functions of the dryer, such as drying time and temperature. It also helps to protect the dryer against any damage that could be caused by overloading by displaying error codes.
You can call the control board the central nervous system of the clothes drying machine.
It regulates power to the various components of the dryer, such as the heating element, blower, and timer.
The control board is also linked to a thermostat, which monitors the air temperature and turns off the heating element when the desired temperature is reached.
The control board also controls the drying cycle in some models by sending power to a motor that turns a drum.
The main control board consists of start buttons, indicator lights, other push buttons (cycle settings), timers, fuses, several MCBs, a motor and temperature controller, etc.
These boards are designed to work in auto as well as manual modes in most dryers.
In auto mode, you can initiate a command and have it carry out those actions and finish the cycle with the minimum number of settings and manual intervention required.
The temperature is controlled automatically by the Temperature or PID controller.
Further, necessary action is taken by the controllers to perform the heating process automatically.
Whereas in manual mode, the user has to perform all the activities by selecting the drying cycle, temperature, and drying time manually.
Where is the control board located in the dryer?
A control board is typically located behind the control panel in a dryer. To access the control board, you will have to remove the control panel frame.
However, some dryer types may require you to detach the top panel to release the control panel frame.
You can easily identify the control board as it has multiple wires running through it that further connect to several switches, sensors, and other components of the dryer.
Moreover, the dry cycle and the timer knobs also connect to the control board from the outside through the control panel.
How to replace the control board in a dryer?
Replacing the main control board in a dryer is a fairly easy task once you have managed to locate it.
Note: Understanding and labeling the running wires is the most important step. Labeling the wires will help you connect them back in the same order.
Instructions to replace the control board in a dryer
Step 1: Disconnect the supplies
If you need to move the dryer away from the back wall, unplug it from the power socket and disconnect other supplies.
Step 2: Remove the control panel frame
Using a screwdriver, remove the retaining screws of the control panel that can be found at the back and at the top of the dryer.
Sometimes you can locate the retaining screws hidden under a plastic cover case on either side of the control panel frame.
Refer to the user manual of your dryer model and type for more clarity on this.
Note: On some dryer types, you may want to disassemble the top panel and then proceed accordingly.
Step 3: Disconnect the wires
This is one of the most complex steps, so you need to follow the instructions carefully.
It is recommended that you label all of the electrical wires connected to the control board before disconnecting them.
Start by disconnecting the wires one by one, carefully and labeling them with their sources.
Tip: While marking the wires, click a picture of the board to understand the placement of the electrical wires before removing them.
Step 4: Remove the control board
Now, remove the screws to release the control board from its mounting bracket.
If you notice dust or dirt inside the panel areas, simply clean them before installing the replacement part.
Step 5: Install the replacement control board
Align the replacement board in its place and fix the screws accordingly.
Now, start connecting the electrical wires correctly according to their labeling.
Step 6: Inspect the control board
Finally, reassemble the dryer by reversing the steps and plugging it into the power socket.
Run a test cycle to make sure the functions are working as before.
In a dryer, the control board receives the user’s instructions and transmits them to the dryer’s switches and sensors.
A faulty control board can create a lot of problems in a dryer and may not allow it to run at all.
Replacing them yourself can sound a bit confusing, especially when it comes to dealing with the running wires through the control board.
So, only do it yourself if you are able to recognize the wiring and have some prior experience in fixing electrical appliances.
You can always call a service technician or a dryer repairman for help if you have any questions or confusion about replacing the control board.
Lastly, we always recommend checking the user manual and the warranty coverage before performing any self-troubleshooting (this is very important as many individuals either forget this step or completely ignore it).
Frequently Asked Questions
How to test a dryer control board?
To test the dryer control board, you will need a multimeter. First, disconnect the control board from the dryer. Then, use a multimeter to test the continuity of the board by placing the probes on the board terminals.
What are the signs of a failing control board?
There are several signs that can indicate a failing control board. These include the dryer not starting, the dryer not heating, the dryer taking too long to dry clothes, and the dryer shutting off mid-cycle. The best way to detect the problematic control board is to notice if the dryer is performing as per the set commands. If it doesn’t, use a multimeter to see if it has continuity or not.
Do all dryers use the same control board?
No, the control boards are designed differently depending on the make and model of your dryer.
Can you run a dryer without a control board?
No, you cannot bypass a control board because running a dryer without a control board will be similar to functionally running a dryer without any controls at all, meaning you will not be able to select any cycles, set any timers, or perform any other function of the dryer.
How much does it cost to replace a dryer control board?
The average cost of replacing a dryer control board is between $27 and $120. However, this cost entirely depends on the make and model of your dryer.
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