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What's wrong with the air conditioner and heating not starting?

2025-10-10 14:30:35 Real Estate

What's wrong with the air conditioner and heating not starting?

Recently, there has been a lot of discussion on the Internet about air conditioners not starting to heat. Especially as the temperature drops sharply in winter, many users have reported that the air conditioner's heating function is malfunctioning. This article will combine hot topics and user feedback in the past 10 days to provide you with a detailed analysis of common reasons and solutions for air conditioners that do not start heating.

1. Common reasons why air conditioner heating does not start

What's wrong with the air conditioner and heating not starting?

According to the search data on the entire Internet, the main reasons why the air conditioner heating does not start include the following aspects:

reasonProportionTypical performance
Improper temperature setting35%Heating temperature is lower than ambient temperature
Filter clogged25%Small air output and poor heating effect
Insufficient refrigerant20%The outdoor unit makes loud noise during heating
Frost on outdoor unit15%Heating efficiency decreases
circuit failure5%Unable to start or shut down frequently

2. Solution to air conditioner and heating not starting

In response to the above problems, we have compiled the following solutions:

1. Temperature setting problem

Make sure the heating temperature is higher than the ambient temperature. It is recommended to set the temperature between 20-24℃. Some air conditioners require preheating in low temperature environments and may take a long time to start.

2. Filter cleaning

Clean the filter at least once a month:

  • Turn off the power and take out the filter
  • Remove dust with a soft-bristled brush or vacuum cleaner
  • Rinse with clean water and dry thoroughly

3. Refrigerant check

If you suspect refrigerant leakage, contact professional maintenance personnel:

symptomPossible reasons
Heating effect gradually becomes worseRefrigerant leaks slowly
The outdoor unit is severely frostedInsufficient refrigerant

4. Maintenance of outdoor machine

Key points for outdoor machine maintenance in winter:

  • Regularly clear snow around the outdoor unit
  • Check whether the outdoor unit drain pipe is frozen
  • Make sure the outdoor unit is well ventilated

3. User FAQs

Based on recent hot search data, we have sorted out the questions that users are most concerned about:

questionanswer
Why does the air conditioner smell strange when heating?It may be that the filter is too dirty or mold has grown inside. It is recommended to clean it thoroughly.
Is it normal that the outdoor unit does not operate in heating mode?Abnormal, it may be a four-way valve failure or a circuit problem.
What should I do if my new air conditioner has poor heating effect?Check whether the installation is standardized and whether the emptying is complete

4. Preventive maintenance suggestions

In order to extend the service life of your air conditioner, it is recommended to take the following preventive measures:

1.Seasonal maintenance:Conduct professional inspections every year before the season changes

2.Correct usage habits:Avoid frequent power on and off and set the temperature appropriately

3.Environmental maintenance:Make sure there is enough space around the indoor and outdoor units

4.Voltage stability:Use a voltage regulator to prevent voltage fluctuations from damaging your equipment

5. Professional maintenance suggestions

When the following situations occur, it is recommended to contact professional maintenance personnel immediately:

  • The air conditioner does not start at all
  • There is an unusual noise or burning smell
  • Repeated fault codes
  • Heating effect continues to deteriorate

Through the above analysis, we can see that there are many reasons why the air conditioner heating does not start, ranging from simple operating problems to complex mechanical failures. It is recommended that users conduct basic troubleshooting first. If the problem is still not resolved, they should seek professional help in time to prevent small problems from developing into major failures.

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