I just got a new York furnace, AC,heat pump( YZF Affinity series / 16 SEER) installed and new York communicating thermometer installed today.
The outside temp today was -1Celcius. The inside house temp was 18C. I put the thermometer to heat unto 20C. After 90minutes of heat pump being on , the thermostat was still showing 18C. It did not change!
What could be a problem?