The unit displays the correct temperature, but the actual room temperature is much higher or lower than the setpoint.

Steps to try:

• Check sensor location: Ensure the sensor is not located near direct sunlight, heat-emitting electronics, or drafts.
• Use fan-only mode: Improve air mixing in the room to reduce temperature stratification.
• Adjust setpoint: Temporarily adjust the set temperature to achieve comfort while planning a repair.

When to call a technician: If the sensor is correctly located but readings remain inaccurate, the sensor itself or the PCB may need replacement.