Hi @Shwnzho,
Thanks for posting in the community. I understand you're looking for assistance with wiring your fan coil to your Nest Learning Thermostat (3rd gen). I appreciate you sharing your wiring information. No worries, I'd be more than glad to share more details with you.
Given that your fan coil system has multiple speeds, which often involves more specific wiring considerations, to ensure full compatibility, I recommend having a Nest Pro technician take a look at your system. Incorrect installation settings can damage your system, your Nest Thermostat, or both. They can assess your system and determine if an upgrade or installation is feasible and ensure everything is set up correctly for optimal performance with your Nest Thermostat.
Hope this information helps.
Regards,
Jonathan
