Answer:
If your Daikin mini-split isn’t heating, there could be several reasons, many of which we’ve encountered with customers over the years. One common cause is incorrect settings; the unit might still be in cooling mode. Ensure the remote is set to “Heat” mode and that the desired temperature is higher than the current room temperature. Another frequent issue is a clogged air filter or blocked outdoor unit, which can restrict airflow and prevent proper heating. In our experience, external factors like extremely low outdoor temperatures or power interruptions can also impact performance. If these checks don’t resolve the issue, it’s best to call a certified technician to diagnose the problem.
More On Why Your Daikin Mini Split Isn’t Heating:
Daikin mini-splits are designed to perform well even in cold climates, making them popular among Canadian homeowners. However, extreme weather conditions, such as sub-zero temperatures, can occasionally affect heating performance. While many Daikin units are equipped with low-ambient heating capabilities, a defrost cycle might temporarily reduce heating as the system works to prevent ice buildup on the outdoor unit.
Another issue could be refrigerant levels. Low refrigerant, often caused by leaks, can prevent the unit from effectively transferring heat. In our experience, scheduling regular maintenance checks is essential to ensure refrigerant levels and system components are in optimal condition, particularly in regions with harsh winters. For systems with advanced diagnostic features, checking error codes on the remote can also help identify the issue.
