Error code reference

Samsung Heat Pump Error Code E253

Fixed 2 compressor discharge temperature sensor breakaway.

First step from the service manual

Check if emission temperature sensor and holder are attached correctly.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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Step-by-step tests with expected resistance, voltage, and continuity values
Wiring diagram references and connector pinouts from the OEM service manual
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E253 on my Samsung Heat Pump

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Fixed 2 compressor discharge temperature sensor

From Service Manual 325007, p.19:

1.Check if emission temperature sensor and holder are attached correctly.

2.Disconnect the sensor and measure resistance at the sensor body. Expected: 10 kΩ to 12 kΩ at 77°F (25°C).

3.Check the sensor harness for opens and shorts. Back-probe the sensor pins at the control board connector; a reading outside 5 kΩ to 50 kΩ indicates a failed sensor.

Part DA32-10105R

Temperature sensor

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First step from the service manual

Get the full diagnostic procedure for E253.

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