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Katrina YoungAug 12, 2025
Why does my American Standard 21 Series indoor unit still run after reaching the temperature setpoint?
- BBill HensleyAug 12, 2025
The indoor fan will continue to operate for constant filtration and temperature sensing.
Why does my American Standard 21 Series indoor unit still run after reaching the temperature setpoint?
The indoor fan will continue to operate for constant filtration and temperature sensing.
Why does my American Standard 21 Series make sounds?
Several factors can cause sounds from the unit: * A slight ticking sound might be heard when the unit starts, due to the electronic expansion valve initializing. * You might hear the sound of gas refrigerant flowing when cooling. * Sounds can occur when gas refrigerant starts or stops flowing as the unit starts or stops. * A slight sound may be heard when the unit is running or after running, which is the drainage system operating. * Cracking or popping sounds heard in heating and defrost can be due to the unit panels expanding or contracting because of temperature change.
Why does mist come from my American Standard 21 Series?
Mist can occur when indoor high humidity air is cooled rapidly. Check when the cooling cycle starts.
What is mode conflict in American Standard 21 Series?
Mode conflict occurs when the indoor operating mode conflicts with that of the outdoor unit. Check for COOL or HEAT mode lockout.
General| SEER Rating | Up to 21 |
|---|---|
| Refrigerant | R-410A |
| Model | 21 Series |
| Type | Air Conditioner |
| Cooling Capacity | 1.5 - 5 Ton |
