I have a Trane 14xli R410a system (2.5 ton). It's 3 months old. It has a TXV on the inside coil.
Furnace is an XL80 2-speed.
I am a 70 deg person. Part of it is for health reasons.
I'm having a problem with coil/suction line freezing.
It has been looked at several times. The pressures/charge have been tested, and the last time it was drawn down and weighed back in.
It seems to freeze most often when it's milder outside.
I don't like to open windows due to pollen issues.
It was recommended that I get an "Optimizer" for the outside unit.
I'd like to understand more about this. All I know is it's supposed to slow the fan down during milder outside temps, how this helps I'm not sure. That's what I'd like to understand further.
It's my understanding you can buy an optimizer kit for the unit that has a new ball-bearing fan, thermostatic device and ... ?
I've searched using google but haven't been able to come up with anything on this. Trane's site search is down.
BTW... The inside coil used is a "Superior". Is this good equipment ?