Error code reference

Samsung Air Conditioner Error Code E438

EVI (ESC) EEV leakage or internal leakage of intercooler or incorrect connector insertion of EVI (ESC) EEV.

SourceSamsung System Air Conditioner Indoor Unit - Full Service Manual (AM FN Series)p. 4-30, 4-90

Samsung codes Samsung air conditioner codes

Diagnostic procedure

The full E438 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

Check EVI EEV connector connection to PCB; check EEV coil installation; check EVI EEV leakage; check intercooler leakage; check indoor EEV leakage.

SourceSamsung System Air Conditioner Indoor Unit - Full Service Manual (AM FN Series)p. 4-30, 4-90

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More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

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Where this code is documented

6 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 E438 procedure

Where this code is documented

Models covered by the manuals that document this code

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