Hisense Dehumidifier Troubleshooting (Complete Guide!)

A dehumidifier brings respite from the summer heat by promoting a cool environment, improving indoor air quality, and increasing comfort. Since it removes excess moisture in the air, you’ll notice that icky and clammy sensation again when it breaks down.

But don’t sweat it!

Below, we’ll show you how to troubleshoot a Hisense dehumidifier. We’ll delve into the most common problems and their respective repairs to help you get the dehumidifier back up and running in no time.

What are the most common problems with a Hisense dehumidifier?

The most common problems with a Hisense dehumidifier are the following:

• The dehumidifier isn’t starting.
• The dehumidifier doesn’t collect water
• The dehumidifier runs but doesn’t dehumidify.
• The dehumidifier isn’t draining.
• The dehumidifier is leaking.

Before performing any repairs, disconnect your dehumidifier from its power source. Wait for at least a minute, then reconnect it and check if the problem is resolved.

If the problem persists after a reset, you can begin troubleshooting. Keep reading our guide below to learn about what causes these common dehumidifier problems and how to fix them.

Hisense Dehumidifier Troubleshooting

Most concerns with a Hisense dehumidifier can be resolved with proper installation, routine care and maintenance, or a quick reset. 

Electrical issues, on the other hand, may require the services of a licensed electrician.

We’ve made a list of the issues you’ll likely encounter with your Hisense dehumidifier and what causes them to occur. 

The Issues	Causes	Difficulty Level
The dehumidifier isn’t starting.	Insufficient Power	Easy or Professional Services
	Tripped Circuit Breaker	Easy or Professional Service
The dehumidifier doesn’t collect water.	Frozen Dehumidifier	Easy
	Dirty Filter	Easy
The dehumidifier runs but doesn’t dehumidify.	Improper Location	Easy
	Dirty Filter	Easy
The dehumidifier isn’t draining.	Poorly Installed Water Bucket	Easy
	Kinked or Clogged Hose	Easy
	Loose Connection	Easy
The dehumidifier is leaking.	Poorly Installed Water Bucket	Easy
	Cracked Water Bucket	Easy
	Clogged Drain Hose	Easy

The dehumidifier isn’t starting.

Power issues are either very easy to fix or very difficult, requiring professional attention. 

Most of the time, you can troubleshoot them by resetting the circuit breaker or plugging in the power cord properly. But if none of that works, you must contact a professional who can diagnose the problem and figure out the best solution.

Here are a couple of reasons why your Hisense dehumidifier won’t start.

Causes	Solutions
Insufficient Power	• Confirm that the dehumidifier is plugged in properly into a grounded 3-prong outlet with 115V of power.  • Hisense also recommends a 15A time-delay fuse or circuit breaker.
Tripped Circuit Breaker	• Locate the circuit breaker.  • Identify the circuit that tripped. Move the switch to the OFF position. • After a few seconds, flip the switch back to the ON position. • Plug in your dehumidifier. Confirm that it can turn on and operate properly. • Turn on the lights and plug in the other appliances in the circuit.  • If the circuit trips, the appliance or light may have faulty wiring. Or, it may have caused an overload. • Contact a licensed electrician who can help you diagnose and resolve the issue.
Full Water Bucket	• Unplug the dehumidifier. • Hold the water bucket on both sides and carefully slide it out. • Empty the water into the sink or drain.  • Rinse the bucket thoroughly with water and mild soap to prevent foul smells from developing. • Reinstall the bucket into the unit. Make sure it snaps into place.

Insufficient Power

One of the first things you need to check if your dehumidifier isn’t starting is if it’s connected to a power source. You might have just forgotten to plug in the power cord—which happens even to the best of us!

If you have pets or children around, it’s also possible that they knocked the plug loose while playing around the hose.

Solution: Confirm that the dehumidifier is plugged in properly into a grounded 3-prong outlet with 115V of power. Hisense also recommends a 15A time-delay fuse or circuit breaker.

If your hose does not meet the electrical requirements of your dehumidifier, professional services are necessary. You must call a licensed electrician who can install a properly grounded 3-prong outlet.

Tripped Circuit Breaker

If power keeps on turning off in one area of your house instead of the entire household, you most likely have a tripped circuit breaker. It’s often caused by an overloaded circuit, which happens when you connect too many high-powered appliances.

Typically, you can resolve the problem by resetting your dehumidifier. However, if a reset can’t fix it, you need the services of a licensed electrician.

Solution: Turn off all the lights and unplug the appliances connected to the tripped circuit breaker. 

To reset the circuit, follow these steps:

• Step 1: Locate the circuit breaker in your household and identify the one that keeps tripping. The switch would be out of place when a breaker trips.
• Step 2: Flip the switch on the circuit breaker to the OFF position.
• Step 3: After a few seconds, move the switch back to the ON position.
• Step 4: Plug in your dehumidifier. Confirm that it turns on and operates properly.

If the circuit doesn’t trip, your unit isn’t the problem. It should function well if you plug it into a different circuit.

• Step 5: Turn on the lights and plug in the other appliances in the circuit. 

If the circuit trips when you plug in an appliance or turn on a light, it may have faulty wiring. Or, it may have overloaded the circuit, causing it to trip.

Contact a licensed electrician who can help you diagnose and resolve the issue.

Full Water Bucket

Regardless of your drain setup, your dehumidifier will shut off if the bucket is full. An illuminated Empty Bucket indicator light indicates that the bucket is full of water and needs to be emptied.

Until you dump the extracted water, your dehumidifier’s fan and compressor will not start running.

Solution: To empty a Hisense dehumidifier water bucket, follow these steps:

• Step 1: Unplug the dehumidifier.
• Step 2: Hold the water bucket on both sides and carefully slide it out.
• Step 3: Empty the water into the sink or drain. 
• Step 4: Rinse the bucket thoroughly with water and mild soap to prevent foul smells from developing.
• Step 5: Reinstall the bucket into the unit. Make sure it snaps into place.

The dehumidifier doesn’t collect water.

If your Hisense dehumidifier isn’t collecting water, it might be in de-icing mode, or it might have a dirty air filter. Whatever the case may be, the fix will be easy and hassle-free.

However, it might take a bit of patience if your dehumidifier is frozen as you have to ensure it reaches the optimal temperature range before operating it.

Here are the main reasons why your dehumidifier isn’t collecting water.

Causes	Solutions
Frozen Dehumidifier	• Disconnect the dehumidifier from power. • Transfer it to a more ideal location, where the temperature ranges between 38°F and 90°F.  • Keep it disconnected from its power source until its temperature naturally rises above 33°F. • Restore power to the dehumidifier and turn it on. • Check if the error code is gone and if the dehumidifier functions properly.
Dirty Filter	• Unplug the power cord. • Remove the air filter. Use a vacuum to remove as much dirt and lint as you can. • Rinse the filter in warm soapy water. • Wipe it dry or let it air dry before reinstalling it.  • Reinstall the filter and restore power to the dehumidifier.

Frozen Dehumidifier

Low ambient temperatures may trigger your dehumidifier to freeze. Once it detects that the temperature is too low, it will enter de-icing mode automatically, which turns off the compressor and turns on the fan.

Solution: To troubleshoot a frozen dehumidifier, follow these steps:

• Step 1: Disconnect the dehumidifier from its power source.
• Step 2: Transfer the unit to a room with an ambient temperature ranging from 38°F and 90°F. 
• Step 3: Keep the dehumidifier disconnected from its power source until its temperature naturally rises above 33°F.
• Step 4: Restore power to the dehumidifier and turn it on.
• Step 5: Check if it functions properly.

If the dehumidifier has been stored in an area with low ambient temperature for a time, you might need to request service from a professional.

Dirty Filter

No matter how frequently you use the dehumidifier, dirt will accumulate on the filter, preventing it from collecting water, among many other issues. 

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

• Step 1: Unplug the power cord.
• 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.

The dehumidifier runs but doesn’t dehumidify.

If your dehumidifier runs but won’t dehumidify, it’s probably installed in an unideal location or it hasn’t been maintained properly. Either way, you’re dealing with a minor issue that you can fix in a couple of minutes.

Discover how to troubleshoot a dehumidifier that won’t dehumidify using our quick guide below.

Causes	Solutions
Improper Location	• Install your unit indoors with at least 12” to 18” of space on the rear and sides for models with black louvers.  • For models with top louvers, maintain enough ventilation space above the unit.
Dirty Filter	• Unplug the power cord before cleaning it. • Remove the air filter. Use a vacuum to remove dirt and lint from the filter. • Rinse the filter in warm soapy water. • Wipe it dry or let it air dry before reinstalling it.  • Reinstall the filter and restore power to the dehumidifier. • Push the Clean Button for 5 seconds until the indicator goes off. • After 5 to 10 seconds, press the button again to restore its normal display.

Improper Location

Just like its electrical requirements, you must meet Hisense’s location requirements in order for your dehumidifier to function efficiently. 

For starters, your dehumidifier is designed for indoor residential use only. If you try operating it outdoors, it won’t be as effective. 

Solution: To ensure your dehumidifier’s optimal performance, install it indoors with at least 12” to 18” of space on the rear and sides for models with black louvers. For models with top louvers, maintain enough ventilation space above the unit.

Keep windows, doors, and other sources of humid air closed to prevent overworking your dehumidifier.

Dirty Filter

Dirt build-up can cause various malfunctions in your Hisense dehumidifier. If your unit starts but doesn’t dehumidify, check if the air filter is dirty.

The air filter traps dust mites, pollen, and other air pollutants, preventing them from getting into the appliance. Over time, dirt can build up around the filter and block the air from passing through, which is why routine cleaning is crucial.

Once the air can’t pass, it will cause different problems for the dehumidifier. Aside from preventing it from collecting water, a dirty air filter can also impair it’s ability to dehumidify.

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.

After manually cleaning the filter, you must reset the monitor, which notifies you whenever the filter needs routine cleaning. 

To reset the filter monitor on Hisense dehumidifiers, except DH3020k1W, follow these steps:

• Step 1: Push the Clean Button for 5 seconds until the indicator goes off.
• Step 2: After 5 to 10 seconds, press the button again to restore its normal display.

If you own a Hisense DH3020k1W, you can reset the filter monitor by pressing the Power button for 5 seconds.

The dehumidifier isn’t draining.

There are three ways to drain your dehumidifier: bucket, drain pump, or gravity drain system. Each one has a unique setup and requirements which, if not met, are going to create drainage problems.

Let’s take a closer look at the most common causes of drain issues on each type of drain setup.

Causes	Solution
Poorly Installed Water Bucket	• Unplug the dehumidifier. • Hold the water bucket on both sides. Then, gently slide it out. • Empty the water into the sink or drain. Make sure not to touch the water level float to prevent it from malfunctioning. • Rinse the bucket thoroughly with water and mild soap to prevent foul smells from developing. • Reinstall the bucket into the unit. Make sure it snaps into place. • If the Empty Bucket light illuminates after emptying the bucket, you must reinstall it properly.
Kinked or Clogged Hose	• Unplug the dehumidifier.  • Open the connector cover on the side of the dehumidifier. Then, remove the bucket. • Detach the drain hose from its port at the back of the dehumidifier. • Connect the end of the drain hose to a wet or dry vacuum. Then, use tape to seal the ends together.  • Turn on the vacuum and keep it running for 5 minutes. • Clean the drain hose using a homemade solution of 1:1 warm water and distilled white vinegar.  • Just pour the solution down the hose and let it sit for about 15 minutes. • Pour hot water down the hose to clear the solution. • Wipe the drain port on the dehumidifier. Then, reattach the hose. • Restore power to the dehumidifier. Turn it on and observe if it drains properly.
Loose Connection	• Unplug the dehumidifier. • Disconnect the hose by pushing the button on the port through the side hole. Hold down the button while you’re pulling out the hose. • Reconnect the hose. Pass the hose through the side hole and connect it properly to ensure there is no leak. • Reconnect the dehumidifier to power. • Activate the pump function by pressing the button labeled P until the indicator light turns on. • According to Hisense, you should cut 1” from the hose after 3 times of disconnection.

Poorly Installed Water Bucket

All dehumidifiers come with a water bucket that collects the water extracted from the air. Unlike the other two methods, this requires you to manually empty the bucket every time it gets full.

Simply put, it is a pretty straightforward setup, which means there’s very little room for mistakes. If your dehumidifier isn’t draining water into the bucket, then it’s most likely because it’s not installed properly.

Solution: To install your Hisense dehumidifier water bucket correctly, follow these steps:

• Step 1: Unplug the dehumidifier.
• Step 2: Hold the water bucket on both sides. Then, gently slide it out.
• Step 3: Empty the water into the sink or drain. Make sure not to touch the water level float or else it’s going to malfunction, which can cause the dehumidifier to leak.
• Step 4: Rinse the bucket thoroughly with water and mild soap to prevent foul smells from developing.
• Step 5: Reinstall the bucket into the unit. Make sure it snaps into place.

If the Empty Bucket light illuminates after emptying the bucket, you must reinstall it properly.

Kinked or Clogged Hose

Whether you have a drain pump or a gravity drain setup, kinks, crimps, or clogs can restrict the flow of water out of the dehumidifier, preventing it from draining. You’ll have to straighten any bent areas and remove clogs to restore water flow.

Solution: Route the hose downward to promote efficient draining. If the drain system is elevated, or sitting right above the machine, you can either elevate the device or set the end of the hose on a lower drain port.

To unclog the drain hose, follow these steps:

• Step 1: Unplug the dehumidifier. 
• Step 2: Open the connector cover on the side of the dehumidifier. Then, remove the bucket.
• Step 3: Detach the drain hose from its port at the back of the dehumidifier.
• Step 4: Connect the end of the drain hose to a wet or dry vacuum. Then, use tape to seal the ends together. 
• Step 5: Turn on the vacuum and keep it running for 5 minutes.
• Step 6: Clean the drain hose using a homemade solution of 1:1 warm water and distilled white vinegar. Just pour the solution down the hose and let it sit for about 15 minutes.
• Step 7: After 15 minutes, pour hot water down the hose to clear the solution.
• Step 8: Wipe the drain port on the dehumidifier. Then, reattach the hose.
• Step 9: Restore power to the dehumidifier. 
• Step 10: Turn on the dehumidifier and observe if it drains properly.

If you don’t have a wet or dry vacuum, you can extract obstructions in the drain hose using an air or water-powered cleaner.

Another option is to use an enzymatic cleaner to break down hard-to-reach gunk in the drain hose. However, this requires a lot of time because the solution is milder than your typical chemical cleaners. 

You must soak the hose overnight to ensure the enzymatic cleaner can dissolve any obstructions inside.

Loose Connection

Some Hisense dehumidifiers have a built-in motorized pump, which pushes water through the hose and onto the drain system. If the hose isn’t connected properly to its port, the pump indicator light will flash to let you know.

Since your dehumidifier has a sensor at the drain port, it can detect when the hose has a loose connection. When it does, it will signal the pump to not turn on, preventing it from draining.

Solution: To troubleshoot a loose hose connection on a Hisense dehumidifier, follow these steps:

• Step 1: Unplug the dehumidifier.
• Step 2: Disconnect the hose by pushing the button on the port through the side hole. Hold down the button while you’re pulling out the hose.
• Step 3: Reconnect the hose. Pass the hose through the side hole and connect it properly to its port to ensure there is no leak.
• Step 4: Reconnect the dehumidifier to power.
• Step 5: Activate the pump function by pressing the button labeled P until the indicator light turns on.

According to Hisense, you should cut 1” from the drain hose after 3 times of disconnection.

The dehumidifier is leaking.

A leaking dehumidifier is often caused by an obstructed drain hose or a poorly installed water bucket. Although not as common, it can also be caused by a cracked bucket, which you’ll have to replace to fix the leak.

Here are the possible reasons why your Hisense dehumidifier is leaking and how to fix these problems.

Causes	Solutions
Poorly Installed Water Bucket	• Unplug the dehumidifier. • Hold the water bucket on both sides. Then, gently slide it out. • Empty the water into the sink or drain. Make sure not to touch the water level float to prevent it from malfunctioning. • Rinse the bucket thoroughly with water and mild soap to prevent foul smells from developing. • Reinstall the bucket into the unit. Make sure it snaps into place. • If the Empty Bucket light illuminates after emptying the bucket, you must reinstall it properly.
Cracked Water Bucket	• Unplug the dehumidifier.  • Open the connector cover on the side of the dehumidifier. Then, remove the bucket • Fill the bucket with water over the sink. Observe if it leaks.  • Get a replacement for your Hisense dehumidifier’s cracked water bucket.  • Reinstall it properly to prevent leaks.
Clogged Drain Hose	• Unplug the dehumidifier.  • Open the connector cover on the side of the dehumidifier. Then, remove the bucket. • Detach the drain hose from its port at the back of the dehumidifier. • Connect the end of the drain hose to a wet or dry vacuum. Then, use tape to seal the ends together.  • Turn on the vacuum and keep it running for 5 minutes. • Clean the drain hose using a homemade solution of 1:1 warm water and distilled white vinegar.  • Just pour the solution down the hose and let it sit for about 15 minutes. • Pour hot water down the hose to clear the solution. • Wipe the drain port on the dehumidifier. Then, reattach the hose. • Restore power to the dehumidifier. Turn it on and observe if it drains properly.

Poorly Installed Water Bucket

The water bucket collects the water extracted from the air during operations. If the bucket is misaligned, water will leak out of the dehumidifier instead of collecting inside the bucket.

Solution: To realign your Hisense dehumidifier water bucket, follow these steps: 

• Step 1: Unplug the dehumidifier.
• Step 2: Hold the water bucket on both sides. Then, gently slide it out.
• Step 3: Empty the water into the sink or drain. Make sure not to touch the water level float or else it’s going to malfunction, which can cause the dehumidifier to leak.
• Step 4: Rinse the bucket thoroughly with water and mild soap to prevent foul smells from developing.
• Step 5: Reinstall the bucket into the unit. Make sure it snaps into place.

If the Empty Bucket light illuminates after emptying the bucket, you must reinstall it properly.

Cracked Water Bucket

Another possible cause of leaks in your Hisense dehumidifier is a cracked water bucket. If you’re certain that you installed the bucket properly but it keeps on leaking, you should inspect the bucket for any cracks and holes.

Solution: Before replacing the water bucket, confirm that it is cracked and leaking water. Follow these steps carefully:

• Step 1: Unplug the dehumidifier. 
• Step 2: Open the connector cover on the side of the dehumidifier. Then, remove the bucket
• Step 3: Fill the bucket with water over the sink. Observe if it leaks. 
• Step 4: If you find a crack, get a replacement for your Hisense dehumidifier’s water bucket.

Clogged Drain Hose

Aside from drainage issues, any obstructions in the drain hose can cause leaks. Since water can’t properly drain, it can cause back-ups or overflows onto the floor. 

Solution: To unclog the drain hose on a Hisense dehumidifier, follow these steps:

• Step 1: Unplug the dehumidifier. 
• Step 2: Open the connector cover on the side of the dehumidifier. Then, remove the bucket.
• Step 3: Detach the drain hose from its port at the back of the dehumidifier.
• Step 4: Connet the end of the drain hose to a wet or dry vacuum. Then, use tape to seal the ends together. 
• Step 5: Turn on the vacuum and keep it running for 5 minutes.
• Step 6: Clean the drain hose using a homemade solution of 1:1 warm water and distilled white vinegar. Just pour the solution down the hose and let it sit for about 15 minutes.
• Step 7: After, pour hot water down the hose to clear the solution.
• Step 8: Wipe the drain port on the dehumidifier. Then, reattach the hose.
• Step 9: Restore power to the dehumidifier. 
• Step 10: Turn on the dehumidifier and observe if it drains properly.

Other alternative ways to unclog an obstructed dehumidifier involve the use of an air or water-powered cleaner or an enzymatic cleaning solution.

Troubleshooting Error Codes on a Hisense Dehumidifier

Error codes indicate different problems with your Hisense dehumidifier. By knowing the root cause, you’ll know how to troubleshoot the error.

The fix can be as simple as cleaning the dehumidifier or transferring it to an optimal environment. If there is a component failure, a replacement is required.

Here’s an overview of the different error codes on Hisense dehumidifiers.

Error Codes	Meaning	Causes	Solutions
LO	The ambient temperature is way below the recommended operating range of the dehumidifier.	The dehumidifier is operating in unideal ambient temperatures (below 33°F).	• Disconnect the dehumidifier from power. • Transfer it to a more ideal location, where the temperature ranges between 38°F and 90°F.  • Keep it disconnected from its power source until its temperature naturally rises above 33°F. • Restore power to the dehumidifier and turn it on. • Check if the error code is gone and if the dehumidifier functions properly.
HI	The ambient temperature is way above the recommended operating range of the dehumidifier.	The dehumidifier is operating in ambient temperatures above 122°F.	• Disconnect the dehumidifier from power. • Transfer it to a more ideal location, preferably where the ambient temperature ranges from 38°F and 90°F. • Wait for it to reach optimal operating temperatures.  • Restore power. Check if the error code is resolved and if the dehumidifier functions properly.
P1	Auto-defrost mode is activated.	The dehumidifier has automatically entered defrost mode to prevent the unit from freezing.	• Wait for the dehumidifier to finish the defrosting process.  • If the defrosting process takes more than an hour, unplug the dehumidifier’s power cord.  • Then, leave it in a room with ambient temperatures ranging from 38°F and 90°F for 4 to 6 hours.
E9	There is a problem with the humidity sensor.	The dehumidifier either has a loose connection, a dirty humidity sensor, a dirty air filter, or a faulty humidity sensor.	Dirty sensor: • Unplug the dehumidifier’s power cord. • Open the front grille of the dehumidifier. • Locate the humidity sensor. Refer to your user manual, if needed. • Dip cotton swabs in alcohol. Use the swabs to clean the sensor and the area around it. • Reinstall the panel. • Reconnect your washer to power. Check if the E9 error is resolved.
			Faulty 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.

LO

A LO error code indicates that a Hisense dehumidifier is operating way below the recommended ambient temperatures. If your unit is installed in an area that sees temperatures below 33°F, it can’t function efficiently.

Solution: To resolve an LO error code on a Hisense dehumidifier, follow these steps:

• Step 1: Turn off the dehumidifier and unplug its power cord.
• Step 2: Transfer the unit to a more ideal location, where the temperature ranges between 38°F and 90°F. 
• Step 3: Keep it disconnected from its power source until its temperature naturally rises above 33°F.
• Step 4: Restore power to the dehumidifier and turn it on.
• Step 5: Check if the error code is gone and if the dehumidifier functions properly.

If the dehumidifier has been stored in an area with low ambient temperature for a time, it might require servicing.

HI

Similarly, an HI error code indicates that a Hisense dehumidifier is running in unideal ambient temperatures, specifically above the recommended levels.

If the ambient temperature exceeds 122°F, it is too high and is most likely causing your dehumidifier to malfunction. 

Solution: To resolve a HI error code on a Hisense dehumidifier, follow these steps:

• Step 1: Turn off the dehumidifier and unplug its power cord. 
• Step 2: Transfer your unit to a more ideal location, preferably where the ambient temperature ranges from 38°F and 90°F.
• Step 3: Simply wait for the dehumidifier to reach optimal operating temperatures. 
• Step 4: Restore power to the dehumidifier and turn it on.
• Step 5: Check if the error code is gone and if the dehumidifier functions properly.

P1

A P1 error code on a Hisense dehumidifier means that your unit has entered defrost mode. It initiates the defrosting process when it detects that the unit is freezing.

If your unit is installed in a room with low ambient temperatures, it’s normal to experience freezing. To prevent the coils from completely freezing, your unit enters auto-defrost mode and lets you know with a P1 error code.

After the defrosting process, your unit will revert to the programmed settings. 

Solution: If a P1 error code appears on a Hisense dehumidifier, just wait for it to complete the defrosting process as it shouldn’t take too long. 

However, if the defrosting process takes more than an hour, unplug the dehumidifier’s power cord. Then, leave it in a room with ambient temperatures ranging from 38°F and 90°F for 4 to 6 hours.

E9

An E9 error code on a Hisense dehumidifier(hisense dehumidifier e9) means that the appliance has detected a problem with the humidity sensor.

It doesn’t necessarily indicate a defective sensor. It could mean that the sensor is malfunctioning because of a loose connection or dirt build-up around it.

Dirty Humidity Sensor

Dirt build-up on the humidity sensor can prevent it from reading the humidity levels accurately. Not to worry, a filthy sensor doesn’t require repairs, only cleaning.

What you’ll need:

• Cotton swabs
• Alcohol

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 swabs to clean 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.

Faulty Humidity Sensor

If there are no loose connections or dirt build-up, the humidity sensor may be defective. You can’t repair a bad sensor, but you can replace it with a new one to continue using your appliance.

Lucky for you, replacements are easily available at online stores and repair shops near you. Moreover, you can do the repair yourself because it is quite easy and quick.

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 replacing the faulty humidity sensor, there are a few things you need to check to ensure that the appliance will continue to run smoothly. 

For starters, make sure all electrical requirements are met to prevent further malfunctions. Install your dehumidifier in the optimal environment to keep it at peak performance.

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

Frequently Asked Questions