Mitsubishi minisplit popping noise during heating
My mini-splits are already getting a workout heating our home in Vermont. There is a unit on the main floor and a second upstairs near our bedroom – each unit is fully independent. The upstairs unit is constantly popping during use to the point that it wakes me up multiple times a night. Has anyone experienced this before? Any suggestions? Everything is still under warranty and I’m calling the installer but am curious if this is a common issue?
Thanks. The model number is: MSZ-FH15NA.