I do have the WiFi thermostat (picture attached) that I m trying to attached with my current central airconditioning unit but no success after trying multiple wiring. I does have three wires coming to the current thermostat (picture attached below)
Can someone help me if this exisiting thermostat can work or any other WiFi thermostat can work with the exisiting Air-condition
Same WiFi thermostat was working perfectly fine earlier in a different apartment.





