Panasonic took over the Sanyo line of Mini-splits. So, when I have another problem,
I'll be calling Panasonic.
I'll have to check out my warranty.. Not sure how much time is left on what components..
Anyways, my installs are posted here, you should check them out..
See how a novice DIYer does it..
My old 24k BTU units will work pretty well down to about 5 deg F.
Below that, the start using higher power (leveling off at abt 1200w IRCC).
I have three little 1200w space heaters (12,283 BTUh total) to keep the chill out.
I've set them up a few times, but never really needed them.
Most of the time, it doesn't stay below 5F for very long..
I just went to the Panasonic site to check out their install training videos...
https://panasonichvac.adobeconnect.com/p78623823/
They are still using the Sanyo stuff..