HVAC Troubleshooting
Follow our interactive troubleshooting guide to find answers to your system’s problems.
Choose from a selection of common HVAC issues or pick your product for help with fixes you can try yourself.
Ductless System Troubleshooting
These are some of the most common issues that your ductless (mini-split) system might encounter, plus what you can do about them.
Why won’t my ductless system heat or cool properly?
Your ductless heat pump or ductless air conditioner might have a problem heating and cooling because the outdoor coil is blocked. Try clearing away leaves or other debris around the unit. Your filters may also be dirty or clogged and need replacing or cleaning to get your mini-split HVAC back up and running. Regular ductless system maintenance, like changing the filters, can help prevent multiple issues.
Why isn’t my ductless system blowing hot or cool air?
This issue might be caused by the blower door being open. Try to close the door securely to restore power to the blower and gas valve. Also, your main gas line might be shut off and need to be turned on. If closing your blower door doesn’t work, contact your gas company to take further action.
More Ductless System Troubleshooting
Do Mini-Splits Have Filters, and How Do I Care for Them?
Do Mini-Splits Turn Off When Temperature is Reached?
How to Identify and Fix Mini-Split Refrigerant Issues
Mini-Split Compressor Not Turning On
Understanding Your Trane/Mitsubishi Mini-Split Remote
What Size Mini-Split Do I Need?
Why Is My Mini Split Leaking Water?
Why Is My Mini-Split Not Cooling?
Is your HVAC system still experiencing issues?
Your local Trane dealer can help.Maintenance Tips
A healthy HVAC system can last longer and save money. Maintain your system with these tips.
Owner’s Manual
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