Error code reference

Samsung Air Conditioner Error Code E190

No temperature changes in EVA IN during pipe inspection or changes in temperature seen in indoor unit with wrong address.

SourceSamsung DVM S2 Air Conditioner Outdoor Unit - Service Manual (AM072-AM240HCV)p. 81

Diagnostic procedure

The full E190 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
1
First diagnostic step
Check if gas and liquid pipes are crossed; check outdoor EEV coil connections; check indoor sensor connections.

SourceSamsung Air Conditioner - Full Service Manual: Free Joint Multi Series (MH/NJ Models)p. 3-5, 9-8

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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