Samsung Air Conditioner Error Code tx

The tx error code indicates an EEPROM fault on the indoor unit at address x, where x is a hexadecimal value from 0 to F identifying which specific indoor unit in the system has the problem. The EEPROM is a memory chip on the indoor unit's main control board that stores configuration and operational data. When the board cannot read or write to this memory, it triggers the tx fault and disables that indoor unit.

The Samsung system will typically disable the affected indoor unit when a tx error is active, which means that unit will not operate. The rest of the multi-split system may continue to function normally. You should not attempt to bypass the fault, as operating without valid EEPROM configuration data could cause the unit to run outside its intended parameters.

Replacing the indoor unit PCB is a task most knowledgeable DIYers can physically perform, but there is an important complication with EEPROM errors specifically. A new or replacement PCB must be programmed with the correct configuration data for that specific indoor unit address and capacity. Without proper programming, the tx error may persist even with a new board installed. Using Samsung's service software or having a certified technician handle the replacement and programming is strongly recommended.

A power reset may temporarily clear the tx error if the fault was caused by a one-time data glitch or a brief communication interruption. However, if the EEPROM chip is physically damaged or its data is genuinely corrupted, the error will return shortly after the unit powers back on. A reset alone is not a repair, and persistent tx errors require hands-on diagnosis of the indoor unit's main control board.

Repair costs vary depending on the exact cause. If the issue is limited to a corroded solder joint, a skilled technician may resolve it for a relatively low labor fee in the range of $75 to $150. If the full indoor unit main control PCB requires replacement, parts and labor combined typically run between $200 and $500 or more depending on the unit model and local labor rates. EEPROM reprogramming services, where available, may fall in the lower end of that range.