hey all ..
i have a service call tomorrow on a sanyo multi zone mini split 410a.
i have worked on many mini splits.. i have installed only one that was multi zone .. years ago ..

as well all know .. most of these that are installed almost always have leaks..
(flaring is an art not a hobby)
customer says everything is running .. but no cool air..
model# for condenser - cm3172

does anyone have any tech manuals or trouble shooting manuals for mutizones .. testing/charts/theory of operation .. other than what i can pull off product specific websites?