Error code reference

Samsung Air Conditioner Error Code E426

Prohibit heating mode operation when outdoor temperature exceeds 30°C.

SourceSamsung System Air Conditioner - Full Service Manual (Multi-Unit)p. 3-2, 11-22

Samsung codes Samsung air conditioner codes

Diagnostic procedure

The full E426 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

This is not a product error but a specification to protect the product by restricting operating temperature range.

SourceSamsung System Air Conditioner - Full Service Manual (Multi-Unit)p. 3-2, 11-22

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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

2 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 E426 procedure

Where this code is documented

Models covered by the manuals that document this code

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