American Standard 3 ton 2-stage A/C models will receive a 14th digit model number change, beginning production on January 11th, 2021. The new models will begin shipping once inventory of the old model numbers has been depleted. The new models include the following changes:
- New compressor
- Removal of rectifier
- Addition of time delay relay
- Addition of high temp switch
- Addition of harness
- Change in wiring diagram
For additional details, download Product Bulletin (PDF)