It is a very rare thing to come across when you hear people saying that their mini-split is unable to provide sufficient heat. I know you must be thinking that the majority of the people complain about the cooling part and not the heating one. But trust me, it has become a commonly faced issue among people. So to help you out, I have gathered some useful information which will guide you regarding this issue along with its troubleshooting. If your Mitsubishi mini split is not heating then you must keep reading this article till the end.
Why is my Mitsubishi Mini Split not heating?
There are various potential reasons due to which your Mitsubishi mini split will not provide sufficient heating. Some of these reasons are mentioned below.
- Deactivated heat mode
- Undersized unit
- Tripped circuit breaker
- Clogged filters
- Blocked outdoor unit
- Wrong temperature mode
- Refrigerant leak
- Frozen coil
- Faulty compressor
If any of the above mentioned issues occur then know that you are about to face the similar issue I have talked about earlier.
Mitsubishi Mini Split not heating – Troubleshooting Guide
In this section, I will be discussing the reasons briefly along with their fixes. So if you want to make things right for your mini-split then make sure to follow the article till the end.
1. Deactivated Heat Mode
The first thing that you need to check is the heat mode. Make sure that the heat mode is currently activated. Don’t expect heat mode to come into action immediately after it has been turned ON because it takes some time to do so.
Solution
Don’t worry about this problem as it is not any kind of fault or malfunction. This mode is intended to work in this way and we cannot change that. You just need to show some patience after turning ON the heat mode.
2. Undersized Unit
An undersized unit will most likely provide sufficient heating and cooling in a small room. You cannot expect this type of unit to work in a big room. Consult the user manual in order to know more about your AC unit.
Solution
You need to buy a new AC that matches your space area. If you cannot afford this replacement then you need to live with the fact that your AC unit is not ideal for the space area.
3. Tripped Circuit Breaker
Having a tripped circuit breaker means that there will be a disturbance in the power supply of the overall system. Due to this the heat mode will take more time than usual to come into action.
Solution
Check the circuit breaker, if it is OFF then make sure to turn it ON.
4. Clogged Filters
If there are clogged filters present then it will be hard for the AC to provide adequate air flow. The air flow will be affected no matter which mode is currently activated. This will hinder your good experience.
Solution
If the filters have been clogged with dirt and debris then you need to clean them. Moreover, if the filters have completed their duration of 6 months then you need to get them replaced with new ones.
5. Blocked Outdoor Unit
The outdoor unit of your AC is obviously placed outside in someplace open. This means that it is exposed to various weather conditions. You need to protect this unit otherwise it will be blocked and if it gets blocked then you will experience malfunctioning in its overall working.
Solution
Clean the outdoor unit properly and check for stuff like dirt and debris particles. If it is not cleaned then make sure to have it serviced once a week.
6. Wrong Temperature Mode
Setting your mini-split temperature lower than the temperature of your room and expecting it to heat sufficiently is not justifiable. This could also happen when you have selected the wrong temperature mode. If you want the heat mode to work efficiently then you need to set the temperature mode to “Heat” only.
Solution
In case of manual temperature setting, you need to set the AC temperature higher than the room temperature. But if you want the heating and cooling to be controlled automatically then choose the “Auto” option.
7. Refrigerant Leakage
The thing which is responsible for absorbing hot and cold air from your room is refrigerant. If it becomes faulty then there will be nothing left for absorption. This mostly happens when there is a refrigerant leakage due to damage and installation.
Solution
First make a confirmation regarding the refrigerant leakage. Once confirmed, contact a professional and get it fixed within no time.
8. Frozen Coils
In the winter season, the coils often become frozen. If this happens then the AC finds it difficult to breathe. Moreover, the plastic parts of the air conditioner can also become faulty due to these frozen coils.
Solution
Clean the ice build-up on the outdoor unit properly. For future convenience, shield the outdoor unit to avoid the ice build-up again.
9. Faulty Compressor
There will be no proper heating and cooling if the compressor fails. The presence of a faulty compressor means that the AC will not be able to work properly.
Solution
You can check the compressor using a multimeter. However, if you don’t want to involve yourself in such stuff then call an expert and have it checked by him.
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Mitsubishi mini-split heat pump not heating – Why?
If your Mitsubishi mini-split heat pump is not heating then there is nothing to worry about as the reasons for this problem are also the same. If the reasons are the same then their fixes will also be the same. So make sure to carry out each and every fix carefully.
Wrap Up:
All in all, it is important to have intermediate knowledge regarding your appliances. I know it is hard to get yourself involved in such a type of stuff but believe me this thing is going to reduce your expenses. I hope my article will help you navigate the real problem and guide you regarding its fix.