Inverter AC Not Heating: Easy Troubleshooting Steps

Inverter AC not heating? No need to panic! This comprehensive guide covers common causes, troubleshooting tips, and preventive maintenance to get your system back on track and your home warm and cozy in no time.

Inverter AC Not Heating
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Troubleshooting Inverter AC Not Heating Issues

Let’s look at some troubleshooting tips to help you fix the issue. Once we are done troubleshooting, we’ll reveal the causes of this issue.

Checking the Thermostat

First, let’s tackle the thermostat, as it’s often the easiest problem to fix.

Verifying the Settings

Start by ensuring the thermostat is set to the heating mode and that the temperature is set higher than the current room temperature. Sometimes, it’s just a matter of adjusting the settings to get your system back on track.

Testing the Thermostat

If the settings are correct and your inverter AC is still not heating, you might need to test the thermostat. You can do this by replacing it with a new one temporarily or using a multimeter to check for electrical continuity. If it turns out to be faulty, it’s time to invest in a new thermostat.

Inspecting for Refrigerant Leaks

Next, let’s move on to refrigerant leaks, which can be a bit trickier to diagnose.

Identifying Signs of Leaks

Keep an eye out for signs like ice buildup on the evaporator coils, a hissing sound coming from the unit, or decreased cooling and heating performance. These can all indicate a refrigerant leak.

Locating the Leak

Once you’ve identified the signs of a leak, you’ll need to locate it. You can do this by visually inspecting the unit for oil stains or using an electronic leak detector. Remember, refrigerant can be hazardous, so it’s essential to handle it with care and follow safety precautions.

Repairing the Leak

If you do find a leak, it’s best to call in a professional to repair it, as they have the right equipment and expertise to fix the issue safely and effectively.

Assessing the Compressor

Now, let’s take a look at the compressor, which can be a bit more complex to troubleshoot.

Signs of a Malfunctioning Compressor

Some signs of a malfunctioning compressor include unusual noises, reduced cooling or heating performance, or the unit tripping the circuit breaker. If you notice any of these signs, it’s time to inspect the compressor more closely.

Testing the Compressor

You can test the compressor by using a multimeter to check for electrical continuity, but this can be a bit technical for the average homeowner. If you’re not comfortable with this process, it’s best to call in a professional to assess the compressor for you.

Replacing or Repairing the Compressor

If the compressor is found to be faulty, you’ll need to decide whether to repair or replace it. This decision will depend on factors like the age of the unit, the cost of repair, and the availability of replacement parts. A professional can help you make the best choice for your situation.

Examining the Reversing Valve

Finally, let’s look at the reversing valve, which can also cause your inverter AC not to heat.

Identifying a Faulty Reversing Valve

A faulty reversing valve can be identified by a constant hissing sound coming from the unit, the system switching between heating and cooling modes without any input, or the system only blowing cold air even in heating mode.

Testing the Reversing Valve

Testing the reversing valve can be done by checking for proper voltage at the valve’s solenoid or by manually shifting the valve to see if it changes the system’s operation. Again, if you’re not comfortable with this process, it’s best to call in a professional.

Replacing the Reversing Valve

If the reversing valve is found to be faulty, you’ll need to have it replaced by a professional, as this process requires specialized tools and expertise.


Common Reasons for Inverter AC Not Heating

There could be several reasons for your inverter AC not heating, including thermostat issues, refrigerant leaks, a malfunctioning compressor, or a faulty reversing valve. Let’s dive into these common culprits a bit more.

Thermostat Issues

One of the most common reasons for an inverter AC not heating is a problem with the thermostat. It could be as simple as incorrect settings or something more serious, like a broken thermostat.

Refrigerant Leaks

Refrigerant leaks can also cause your inverter AC to stop heating. If there’s not enough refrigerant in the system, it won’t be able to absorb heat from the air, leaving you shivering on a cold day.

Malfunctioning Compressor

Another possible issue is a malfunctioning compressor. If it’s not working correctly, it won’t be able to compress the refrigerant gas, which is essential for the heating process.

Faulty Reversing Valve

Lastly, a faulty reversing valve could be to blame. This valve is responsible for switching the AC system between heating and cooling modes, and if it’s not working correctly, your system won’t heat your home as it should.


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Preventive Maintenance for Inverter AC

Prevention is always better than a cure, right? To avoid issues with your inverter AC not heating in the future, it’s essential to perform regular maintenance on your system.

Regular Cleaning and Inspection

Keeping your inverter AC clean and well-maintained can help you spot potential issues before they become significant problems.

Cleaning the Filters

Make sure to clean or replace the filters regularly, as dirty filters can reduce the efficiency of your system and lead to poor heating performance. It’s a simple task that can make a big difference in the long run.

Inspecting the Coils and Fins

Take the time to inspect the evaporator and condenser coils for dirt, debris, or damage. Also, make sure the fins are straight and clean. Bent fins can be straightened using a fin comb, which can be found at most hardware stores.

Checking the Drainage System

Regularly check the drainage system for any blockages or leaks, as these can lead to more significant issues if left unaddressed.

Scheduled Professional Maintenance

While DIY maintenance is essential, it’s also crucial to schedule professional maintenance for your inverter AC at least once a year.

The Importance of Regular Maintenance

Professional maintenance can help identify and fix potential issues before they become serious problems, ensuring your system runs efficiently and keeps your home warm when you need it the most.

What to Expect from Professional Maintenance

During a professional maintenance visit, a technician will clean and inspect your system, check for refrigerant leaks, test electrical components, and make any necessary adjustments or repairs. They can also provide you with valuable advice on how to keep your system running at its best.

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