Error code reference

Samsung Air Conditioner Error Code E153

Indoor unit float switch error-float switch open for longer than 1 minute indicating drain pump failure or high drain water level.

SourceSamsung Air Conditioner - Service Manual: Troubleshooting (AVMC4H071EA)p. 12-26, 12-82

Diagnostic procedure

The full E153 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 indoor unit is cassette type; if so, measure float switch resistance (should be infinity/open).

SourceSamsung Air Conditioner - Service Manual: Troubleshooting (AVMC4H071EA)p. 12-26, 12-82

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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