Hisense Dehumidifier E9 Error Code (FIXED!)

Hisense Dehumidifier E9 Error Code

One of the best ways to save money on appliance repairs is to perform them yourself. We know how intimidating it can be when you have limited repair knowledge and experience, but we also know how easy most repairs actually are.

Before making that service call, read our guide below to find out what you can do to troubleshoot an E9 error code on a Hisense dehumidifier. Without a doubt, you can perform the fix yourself with a little help from our step-by-step guide.

What is a Hisense dehumidifier E9 error code?

An E9 error code on a Hisense dehumidifier indicates a problem with the humidity sensor. It can be caused by dirt build-up on the sensor or other parts of the appliance like the air filter.

If it’s caused by a faulty sensor, a replacement is necessary to keep your dehumidifier operating efficiently.

Before making any repairs to your Hisense dehumidifier, try resetting it to troubleshoot the error code:

  • Step 1: Unplug the power cord.
  • Step 2: Keep it unplugged for a few minutes. Then, restore power to your dehumidifier.
  • Step 3: Check if the E9 error code is gone.

If the error code reappears, additional steps are necessary to resolve it. Just keep reading our guide to learn how to identify the underlying cause of the error and how to fix it.

How to Fix E9 Error Code on Hisense Dehumidifier

To troubleshoot an E9 error on a Hisense dehumidifier, you can clean the humidity sensor and other internal components. If the error doesn’t clear after a thorough clean, try to power cycle your dehumidifier.

Let’s take a closer look at the most common causes of an E9 error code on a Hisense dehumidifier. We will also delve into the solutions to fix the error.

CausesSolutions
Loose Connection• Unplug the dehumidifier’s power cord.
• Open the front grille of the dehumidifier.
• Locate the humidity sensor. Refer to your user manual, if needed.
• Check the wire connector on the dehumidifier. Plug the wire in properly to ensure a secure connection.
• Reinstall the front grille on your washer. Then, restore power to your appliance and check if the error is resolved.
Dirty Humidity Sensor• Unplug the power cord and open the front panel of the unit.
• Locate the humidity sensor. 
• Dip a cotton swab in alcohol. Use it to wipe the sensor.
• Reinstall the panel.
• Reconnect your washer to power. Check if the E9 error is resolved.
Dirty Air Filter• Unplug the power cord before cleaning it.
• Remove the air filter. Vacuum it to remove as much dirt and lint as you can.
• Rinse the filter in warm soapy water.
• Let it fully dry before reinstalling into the dehumidifier.
• Restore power to the dehumidifier.
Faulty Humidity Sensor• Unplug the power cord from the wall outlet. Remove the bucket and the air filter from the front grille.
• Rinse it under running water. Clean stubborn dirt and grime using a soft brush or a sponge.
• Take off the front grille of the dehumidifier.
• Unfasten the screws on the back panel. Then, remove it and set it aside.
• Remove the outer case of the humidity sensor. Unplug the wire connector from the electronic control board. Then, disconnect the wire from the collection bucket float switch. 
Remove the thermistor from the copper sleeve on the evaporator coil.
• Release the humidity sensor from the evaporator fins. Then, pull it out of the dehumidifier.
• Get the new sensor and install it in front of the evaporator fins. 
• Reinstall the thermistor in the copper sleeve of the evaporator coil.
• Plug the wire connector into the collection bucket float switch. Then, plug the wire connector of the sensor to the electronic control board.
• Mount the outer case and the back panel. Reinstall all the screws to keep them secure.
• Mount the front grille and reinstall its screws. Then, reinstall the air filter and the bucket. 
• Restore power to the dehumidifier. Turn on the unit and check if the E9 error is gone.

Loose Connection

Like other internal components of your dehumidifier, the humidity sensor is connected to some wires. If the wires aren’t plugged in or not plugged in securely, the sensor will be unable to detect accurate humidity levels.

Solution: To fix a loose connection on your humidity sensor, follow these steps:

  • Step 1: Unplug the dehumidifier’s power cord.
  • Step 2: Unfasten the screws securing the front grille. Remove the grille and set it aside.
  • Step 3: Locate the humidity sensor. Refer to your user manual, if needed.
  • Step 4: Check the wire connector on the humidity sensor. Make sure it is plugged in properly and securely.
  • Step 5: Reinstall power to your dehumidifier.
  • Step 6: Check if the E9 error is resolved.

Dirt Humidity Sensor

Routine cleaning and maintenance not only keeps your dehumidifier operating at peak performance but also ensures its longevity. If you don’t clean the appliance as often as you should, dirt can accumulate and cause all sorts of issues.

An E9 error code is one problem that can arise from this. 

Not to worry, as long as the humidity sensor isn’t faulty, you can troubleshoot it in a few minutes. All you have to do is clean the sensor.

Solution: To clean the humidity sensor in your Hisense dehumidifier, follow these steps:

  • Step 1: Unplug the dehumidifier’s power cord.
  • Step 2: Open the front grille of the dehumidifier.
  • Step 3: Locate the humidity sensor. Refer to your user manual, if needed.
  • Step 4: Dip cotton swabs in alcohol. Use the swaps to wipe the sensor and the area around it.
  • Step 5: Reinstall the panel.
  • Step 6: Reconnect your washer to power.
  • Step 7: Check if the E9 error is resolved.

Dirty Air Filter

An air filter is designed to trap dirt, dust, and grime in your Hisense dehumidifier. If you constantly skip routine cleaning and maintenance, dirt can accumulate on the appliance, triggering different error codes.

If the air filter is dirty, it can restrict airflow to the internal components of the dehumidifier, causing them to malfunction. You must clean the filter every two weeks to keep the appliance functioning efficiently.

Solution: To clean the air filter on your Hisense dehumidifier, follow these steps:

  • Step 1: Unplug the power cord before cleaning it.
  • Step 2: Remove the air filter.
  • Step 3: Use a vacuum to remove as much dirt and lint as you can.
  • Step 4: Rinse the filter in warm soapy water.
  • Step 5: Wipe it dry or let it air dry before reinstalling it. 
  • Step 6: Reinstall the filter and restore power to the dehumidifier.

Faulty Humidity Sensor

A malfunctioning sensor will cause inaccurate readings of the humidity levels. Although you can’t repair this part once it is broken, you can easily get a replacement online or at repair shops near you.

Once you’ve secured the part, you can perform the fix yourself, which can help you cut hefty repair costs. 

What you’ll need:

  • Phillips screwdriver
  • Protective gloves

Solution: To replace a faulty humidity sensor on a Hisense dehumidifier, follow these steps:

  • Step 1: Unplug the power cord from the wall outlet.
  • Step 2: Remove the bucket and the air filter from the front grille.
  • Step 3: Rinse it under running water. Clean stubborn dirt and grime using a soft brush or a sponge.
  • Step 4: Take off the front grille of the dehumidifier.
  • Step 5: Unfasten the screws on the back panel. Then, remove it and set it aside.
  • Step 6: Remove the outer case of the humidity sensor. 
  • Step 7: Unplug the wire connector from the electronic control board. Then, disconnect the wire from the collection bucket float switch. 
  • Step 8: Remove the thermistor from the copper sleeve on the evaporator coil.
  • Step 9: Release the humidity sensor from the evaporator fins. Then, pull it out of the dehumidifier.
  • Step 10: Get the new sensor and install it in front of the evaporator fins. 
  • Step 11: Reinstall the thermistor in the copper sleeve of the evaporator coil.
  • Step 12: Plug the wire connector into the collection bucket float switch. Then, plug the wire connector of the sensor to the electronic control board.
  • Step 13: Mount the outer case and the back panel. Reinstall all the screws to keep them secure.
  • Step 14: Mount the front grille and reinstall its screws.
  • Step 15: Reinstall the air filter and the bucket. 
  • Step 16: Restore power to the dehumidifier. 

After installing a new humidity sensor, make sure that all the parts are installed properly and securely. The mounting surface of your dehumidifier must comply with the requirements laid out by Hisense.

Aside from that, confirm that all the necessary electrical requirements are met to prevent further malfunctions down the line.

Finally, perform a test run on the dehumidifier. Set the 86 wired controller to dehumidification mode and check if it goes into automatic dehumidification mode after installation.

Frequently Asked Questions

Where is the humidity sensor on a dehumidifier?


On a dehumidifier, a humidity sensor is usually located behind the front grille. All you have to do is remove the panel to gain access to the sensor.
However, the location of the sensor may vary per model. Thus, it’s always best to refer to your user manual to be sure.

Is it worth repairing a dehumidifier?


Yes. If the repair is very simple and easy, which you can perform by yourself, then it should be worth it.
Repair services can be very costly, ranging from $50 to $200, depending on the issue. Thus, if it is easy to troubleshoot, such as the E9 error code, then you should carry out the repair yourself.

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