Error code reference

Samsung Heat Pump Error Code E109

COND OUT sensor open or short circuit.

First step from the service manual

Check if COND OUT sensor connector is separated from PCB; measure resistance and compare to temperature table.

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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E109 on my Samsung Heat Pump

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COND OUT sensor open or short circuit

From Service Manual 326117, p.49:

1.Check if COND OUT sensor connector is separated from PCB; measure resistance and compare to temperature table.

2.Measure control board supply voltage at the test points. Expected: 12 VDC and 5 VDC; a drop below 4.75 VDC on the logic rail points to a failed onboard regulator.

3.Inspect all connectors on the main control for corrosion, thermal stress, or backed-out pins. Reseat each connector with the power disconnected.

Part DA92-00384N

Main PCB assembly

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First step from the service manual

Get the full diagnostic procedure for E109.

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