Carrier 33tbac01 Installation Manual - Top !link!

SAFETY CONSIDERATIONS. Read and follow manufacturer instructions carefully. Follow all local electrical codes during installation. Installation Instructions - Carrier

: The unit typically supports manual or automatic fan speed adjustments depending on the specific installer settings. Technical Specifications 4w 3w valve carrier 33tbac01 installation manual top

| Problem | Likely Cause | Solution (from manual) | |---------|--------------|------------------------| | No display / blank screen | No power, dead batteries, missing C wire | Check breaker, install new AA batteries, or connect a C wire | | Display shows but system won’t run | Time delay (5 min) or incorrect DIP switch | Wait 5 min. Check switch 1 (Gas vs Electric) | | Cooling runs with heat | Stuck reversing valve or miswired O/B | Move O/B wire to B terminal or change tech setting | | Fan runs continuously | G wire shorted or DIP switch 2 in wrong position | Set switch 2 to UP for gas, DOWN for electric | | Temperature inaccurate | Thermostat in direct sunlight or draft | Relocate base or seal hole behind thermostat | SAFETY CONSIDERATIONS

Once powered, you must enter the to match the thermostat to your specific HVAC equipment: Installation Instructions - Carrier : The unit typically