Error code reference

Samsung Air Conditioner Error Code E303

Communication error between indoor unit and outdoor unit after completion of tracking - no communication for 2 minutes during operation.

SourceSamsung Air Conditioner - Service Manual: Troubleshooting (AVXC4H056EB)p. 12-36, 12-56

Samsung codes Samsung air conditioner codes

Diagnostic procedure

The full E303 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Press reset key (K3) on outdoor unit PCB and check for indoor unit response during tracking.

SourceSamsung Air Conditioner - Service Manual: Troubleshooting (AVXC4H056EB)p. 12-36, 12-56

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Where this code is documented

3 manuals in the MyPros+ library document this code for Samsung air conditioner.

Models covered by the manuals that document this code

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The full E303 procedure

Where this code is documented

Models covered by the manuals that document this code

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