I'm wondering if a TXV is required to prevent floodback to the condensor when you have a variable-speed blower (specifically when using the dehumidifying features of such systems like a period of slower fan operation at the beginning of the cooling cycle).
In this case the condenser is a 2.5 ton XL1200 and the furnace is a Trane TUD080R9V3. I'm pretty sure it's a 3-ton Trane evaporator coil also.
(Long story: Builder lost original coil during remodeling project and replaced it with a new one. I'm not sure if the original one was installed with a TXV or not but they definitely didn't put a TXV on when they replaced the coil and I'm trying to be sure this isn't a problem.)