Samsung Air Conditioner Error Code UP

The UP code means the trial operation, or commissioning, has not been completed on your Samsung air conditioner. It appears after a new installation, a system reset, or a control board replacement. The code clears automatically once the commissioning sequence runs for one full hour or the automatic inspection finishes. It is a status indicator, not a component failure alert.

A simple power reset will not clear the UP code and may actually restart the problem by interrupting any commissioning run that was in progress. The only way to clear UP is to complete the commissioning procedure using the tact switch. After that, the code disappears without any manual reset needed.

If the UP code is simply due to commissioning not being performed, a qualified HVAC technician can complete the procedure during a standard service call, typically costing between $75 and $150 depending on your location. If the tact switch on the control board is faulty and needs replacement, parts and labor combined could range from $150 to $350. No repairs are needed in most cases since this is a setup step rather than a hardware failure.

To clear the UP code, locate the tact switch on the indoor unit control board and press it to initiate the automatic commissioning sequence. Allow the system to run through the full commissioning process, which takes up to one hour. Do not interrupt power to the unit during this time. Once commissioning completes successfully, the UP code will clear on its own.

The UP code indicates incomplete initialization, which means the system has not confirmed proper operating parameters for your installation. Running the unit in this state may result in reduced performance or unpredictable behavior. It is best to complete commissioning before using the unit for regular cooling or heating.