Error code reference

Samsung Air Conditioner Error Code E161

Mixed operation mode error of indoor unit when outdoor unit is getting ready to operate in one mode and indoor unit tries the opposite mode.

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

Diagnostic procedure

The full E161 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
FJM operates in cooling or heating mode only; ensure all indoor units are set to the same mode.

SourceSamsung Air Conditioner - Full Service Manual: Free Joint Multi Series (MH/NJ Models)p. 3-2, 3-4, 9-9

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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