Error code reference

Samsung Air Conditioner Error Code E203

Communication error between main and sub outdoor units or between main and sub MICOMs.

SourceSamsung Air Conditioner - Service Manual: Troubleshooting & PCB Setup (AVXC4H)p. 4-23, 4-49

Samsung codes Samsung air conditioner codes

Diagnostic procedure

The full E203 procedure

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MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check the communication lines between outdoor units; check the main/sub unit setting switch; check for disconnected line/cold solder/short circuit between main/sub MICOM.

SourceSamsung Air Conditioner - Service Manual: PCB Setup & Troubleshooting (AVXDSH036EE)p. 4-23, 4-52

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Where this code is documented

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

Models covered by the manuals that document this code

More models are covered than are listed here.

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The full E203 procedure

Where this code is documented

Models covered by the manuals that document this code

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