Hisense Portable Air Conditioner Troubleshooting Guide

Common Problems with the Hisense Portable Air Conditioner

#1 Not Turning On

It can be worrisome when your Hisense portable AC unit won’t turn on, but there are a few things that you can do to possibly have it back up and running again:

The unit may not be plugged in properly, so make sure that the portable air conditioner is securely plugged into the wall.
This may also be caused by an electrical issue inside your home. Check your home’s circuit breaker for any problems that need to be addressed.

If neither of these quick fixes works, then there may be an issue with the electrical wiring and components of your unit. It’ll be best to have it professionally checked by a qualified electrician or HVAC technician.

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#2 Not Cooling

When your Hisense portable air conditioner’s main purpose is to cool down your space, it’s natural to feel stressed when you find your unit blowing hot air instead. Here are some possible causes:

Your air conditioner may not be set to cool mode, or the temperature may not be low enough to deliver optimal cooling. Check the settings of your Hisense portable unit to make sure that they’re set properly.
The air filter of your portable air conditioner may be dirty, which can compromise the airflow inside your unit and reduce cooling efficiency. Take out the air filter from the unit and remove all the loose debris before cleaning it thoroughly with some soapy water. Once it’s cleaned and fully dried, put it back to its original location.
The evaporator coils of your unit could be covered in dust and dirt. After removing any loose debris with a soft brush or vacuum cleaner, spray the coils with some soapy water and leave it for 5 to 10 minutes. Then, carefully rinse away the cleaner before carefully drying it with a microfiber cloth.
Your portable air conditioner may be running low on refrigerant, which is a gas that removes the heat from the air. If this is the case, then let a professional HVAC technician refill your unit’s refrigerant.
The drain line of your portable AC may also be clogged with dirt and debris, which can cause water and condensation to go back inside your unit. Use a wet/dry vacuum to remove anything that may be clogging the drain line before pouring some soapy water down the line to dislodge any remaining debris.

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#3 Remote isn’t Working

It can be difficult to customize the settings of your portable AC easily and conveniently without the help of your unit’s remote control. Here are some possible reasons why the remote may not be working:

The battery of your remote control may be running low, which will cause the control board to lose its connection with your unit.
The remote may not be in the proper range to communicate with the AC. When using the remote, make sure that it’s pointing directly towards your unit for the best connectivity. The signal may be interrupted if there are any obstructions standing in the way.
Your remote might be covered in dust and dirt. Wipe down your remote control with a dampened microfiber cloth to remove any impurities or contaminants that may be interfering.

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#4 Front Display Screen isn’t Working

You might have a hard time figuring out which settings your portable air conditioner is on if the front display screen isn’t working. Here are some possible reasons why this may be happening:

The LED screen of your unit is simply dimmed, so make sure to check the brightness settings with your remote.
The screen of your unit may be on screensaver mode and will light up once you change a setting on your portable AC.
The screen may be experiencing a technical issue that may be resolved by resetting your portable air conditioner.

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#5 Compressor isn’t Working

If your Hisense portable air conditioner’s compressor isn’t working, this may be caused by a few things:

The most common reason for your compressor not working is an electrical issue, such as a blown fuse or tripped circuit breaker. This is best left to a qualified professional.
This may also be caused by dirty condenser coils. You can clean your condenser coils by removing any loose debris with a wet/dry vacuum cleaner before spraying them with some soapy water. After leaving this for 5 to 10 minutes, rinse it away and dry it with a microfiber cloth.
Low refrigerant levels may also be negatively affecting your compressor’s performance, so have it checked and refilled by a professional HVAC technician.
Contaminants in the system may also be interfering with your compressor. Have your portable air conditioner deep cleaned regularly by booking an appointment with an aircon servicing and maintenance company.

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#6 Not Draining

Your portable air conditioner naturally produces condensation as it goes through the cooling process, but improper draining may result in reduced cooling performance, water leaks, and other problems. Here are some of the reasons why your Hisense portable AC may not be draining properly:

The drain line may be clogged, which prevents the water from flowing easily. To unclog the drain line, remove any loose bits with a wet/dry vacuum before flushing it out with some soapy water. Feel free to also use a long and flexible brush or pipe cleaner to really get in there if needed.
If your portable air conditioner has a drain pan instead, then it might be time to empty it. While you’re at it, check the drain pan for any stains or damage. If you see any stains or buildup, then simply use a brush and some soapy water to scrub it off.

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#7 Freezing Up

If you’ve noticed some ice forming inside your portable air conditioner, it can be caused by a few things:

A dirty air filter prevents the proper circulation of air, which can cause various parts of your portable AC to freeze up. Make sure that you check your air filter regularly and clean it when needed with a brush and some soapy water.
Dirty coils could also be the reason behind the ice inside your portable AC. When the coils are covered in dust and dirt, they can freeze. To clean your coils, vacuum away any loose particles before spraying it with a soapy water-cleaning solution. After 5 to 10 minutes, use a soft brush to gently remove any debris before rinsing it and leaving it to dry.

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How to Reset Your Hisense Portable Air Conditioner

Restarting your Hisense portable air conditioner may help fix most of the common issues you may encounter while using your unit. Here’s how you can do it:

Power the unit off and unplug the power cord from its socket.
Wait for 30 seconds before plugging it back in and powering it on.

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How to Change Temperature Unit Hisense Portable Air Conditioner

If you want to change your Hisense portable air conditioner’s temperature from Celsius to Fahrenheit or vice versa, then follow these steps:

On your portable air conditioner’s remote, locate the MODE button.
Press and hold the MODE button, together with the lower temperature button, for 3 seconds.
Your portable air conditioner’s temperature unit should change from Fahrenheit to Celsius or Celsius to Fahrenheit, depending on what unit of measurement your AC started off with.

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List of Common Hisense Error Codes

0: No trouble
1: Issue with outdoor coil temperature sensor
2: Issue with compressor temperature sensor
3: Issue with voltage transformer
4: Issue with current transformer
5: IPM module protection
6: Over and under-voltage control
7: Communication trouble
8: Current overload control
9: Maximum current control
10: Communication trouble between outdoor unit and driver unit
11: Outdoor EEPROM in trouble
13: Compressor exhaust temperature too high control
14: Issue with outdoor ambient temperature sensor
15: Compressor housing temperature control
16: Antifreeze or overload control
18: DC compressor fails to start
19: DC compressor out of step
33: Issue with room temperature sensor
34: Issue with indoor coil temperature sensor
35: Communication issues between wire remote controller and indoor unit
36: Communication issues between the indoor and outdoor
37: Water over brimmed the pump
38: Issue with indoor EEPROM
39: Indoor fan motor operation abnormal
40: Grid protection alarm (cabinet type)
41: Detecting failures by zero-crossing
73: Error in EEPROM of panel board
80: Faults in display board
81: Room sensor error
83: Sensor error
F0: Issue with EEPROM of wired remote control
F1: Issue with temperature sensor of remote control
F2: Issue with clock of remote control
F3: Issue with humidity sensor of remote control
FE: Communication between main control board & wiring remote controller fault
ER: Communication between main control board & display board fault.
E2: Evaporator pipe temperature too high
E4: Issue with indoor fan speed
EA: Issue with communication between display board and control board

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Maintaining Your Hisense Air Conditioner

For the best portable aircon maintenance, schedule a deep cleaning session with us at Luce Aircon once every 4-6 months. Our chemical wash will remove all traces of dirt and debris while protecting the components of your AC unit! Contact us for aircon issues as well, and our technicians will find and fix the problem for you.

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