Answer:
When your Fujitsu mini-split isn’t heating, it’s often due to a few common issues that we’ve seen over the years. In our experience, the most likely culprits include incorrect settings, clogged filters, or outdoor unit obstructions. Many of our customers overlook settings like the “mode” being accidentally switched to cooling, so double-check that it’s on “heat” mode. Additionally, if the air filters are dirty, the system can struggle to perform efficiently. We also advise inspecting the outdoor unit for debris or ice buildup, as these can impact the unit’s ability to absorb heat effectively.
More On: Why Is My Fujitsu Mini-Split Not Heating?
A common issue we encounter with mini-splits, including Fujitsu systems, is that their heating performance can suffer in extremely cold conditions if they aren’t the right model for your climate. While most Fujitsu mini-splits are designed to handle Canadian winters, models not equipped with hyper-heating technology may struggle in sub-zero temperatures. Ensuring you have the appropriate unit for your region is key.
We also remind our customers to pay attention to maintenance. Regular cleaning of the filters and coils, as well as clearing snow or debris from the outdoor unit, ensures your mini-split operates efficiently. If the issue persists after addressing these basics, it may be due to low refrigerant levels or a faulty component, such as the compressor or sensors. In these cases, we always recommend calling a certified HVAC technician to diagnose and resolve the issue safely.
