What Does E9 Mean on Your Hisense Dehumidifier? Cracking the Code

Hisense is the number one choice for dehumidifiers by most people. However, you may see a sudden error code as e9 on your humidifier. So, today we are here to investigate this issue. What does e9 mean on Hisense dehumidifier? If you have no idea about this error code, keep reading to know what it is. In addition, this article will reveal to you the causes of the error and the way you can fix it.

What does E9 Mean on Hisense Dehumidifier?

We need to figure out what e9 means on Hisense dehumidifiers, Your humidifier contains a humidity sensor that helps the dehumidifier to stay in your home at the proper humidity level. When you have a problem with that humidity sensor, it’s implied by the error code e9. The error indicates a failure of the sensor’s circuits itself, or it has suddenly opened to the elements.

In simple words, there is a barrier to communication between the dehumidifier and the sensor. This case might arise due to a poor wire connection as well. Consequently, it can affect the overall performance of the humidifier. However, you can fix this error without great difficulty.

What Causes Error E9 on Hisense Dehumidifier?

There are a few various causes to appear this error code, and they have been listed below.

A Fault in the Humidity Sensor – the temperature and the multimeter reading of the resistance in kilo ohms must not show a huge difference.
A Loose Wire Connection or Pins – if the wires have not been secured well, an e9 error code appears.
An Issue with the Circuit Board of the Humidity Sensor – the circuit board might be damaged due to various cases, so you will need a replacement if the error code appears.

Next, we will discuss how to inspect these causes and fix them.

How to Fix Error E9 on Hisense Dehumidifier?

Now we are going to explain how to fix the error code, e9, on your dehumidifier step by step. First of all, you have to figure out whether the issue is a lousy humidity sensor or an error in the technical calculation of the dehumidifier. Therefore, follow these steps in order to diagnose the exact fault and revise it.

Start the task by checking the wire connection of the dehumidifier. Take your time and inspect one by one to make sure every wire has been secured well. Moreover, to check the pins, you will need to remove the terminal blocks. If you notice bent pins, it might be the reason for the sensor’s malfunction. But if the shape of the pins is perfect, there is nothing wrong with the wire connection.

Next, you should check the resistance of the dehumidifier’s wires. So, you will need a multimeter for this step to know the resistance in kilo ohms. Go through the user interface to find the terminals labelled ODT. To check the resistance, first, the wires should be disconnected from the terminal. If the resistance is low, it will be shown by a short circuit. On the other hand, high resistance is shown by an open one. If the sensor functions properly, its resistance is also influenced by the temperature.

When the temperature is 0 F, the resistance in kilo ohms is 85.6, according to the reading of the multimeter. When the temperature increases, the resistance comes down. So, when there is a huge difference between those two, it indicates the senior needs a replacement. Please refer to the next section to know how to do the replacement.

How to Replace the Humidity Sensor on a Hisense Dehumidifier?

First, unplug the power cord of the dehumidifier and remove the water collection bucket from the case.
Then, you should pull the air filter from the bottom of the dehumidifier and clean it if there is dirt or dust.
After, separate the front grille that sets to the frame. You can do it by removing two bottom screws.
The next component to remove is the back panel. Again, you should set 2 screws free that are attached to the back panel.
Now you can remove the outer case of the dehumidifier. You need to set the bottom screws free to remove them.
Then you will be able to see the inside of the dehumidifier. Now carefully remove the humidity sensor by disconnecting its wires.
Take the new sensor and push it into the front of the evaporator fins. And also, you should place the evaporator thermistor. It should be installed in the copper sleeve. Now connect the wires properly for the new sensor in the control board.
Then take all parts of the outer case, the collection bucket and set them properly with the screws.
Finally, plug the machine and turn the power on.

VIDEO CREDITS: QXParts YouTube Channel

Can a Humidity Sensor be Cleaned?

With time, humidity sensors can be filthy because contamination builds around them. As a result, the performance of the sensor gets low. In other words, it might be unable to provide accurate readings. So, it is vital to clean the humidity sensor without missing it. In order to do the cleaning, first, you should discontinue the data logger and detach its battery. Then use a can of compressed air to blow any dirt away. After that, rinse the sensor in water to clean it thoroughly. As the final step, you should let the sensor dry completely. After it dries, you can set the battery again to power the humidity sensor.

How Long do Humidity Sensors Last?

The humidity sensor is the most important component of a dehumidifier, so the lifetime of the sensor is another key thing to determining the performance of the dehumidifier. According to the brand you choose, the lifespan of the humidity sensor can vary, so make sure to buy a dehumidifier from a reliable brand with a warranty. If you buy a good-quality dehumidifier, its sensor will last seven to ten years. It is better to do a calibration check to confirm the recalibration intervals. Many sensors work properly for a long time, but their drift has to be validated.

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