Error code reference

Samsung Heat Pump Error Code E116

Prohibit starting by low pressure

Prohibit starting by low pressure - low pressure sensor value below 3.1 kg/cm2G (cooling) or 2.6 kg/cm2G (heating) for 3 consecutive seconds before pump down start.

First step from the service manual

Measure pressure using Manifold Gauge when system is stopped, then compare with low pressure sensor value via View Mode or S-net.

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
Verified part numbers when replacement is required

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E116 on my Samsung Heat Pump

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Prohibit starting by low pressure - low

From Service Manual 326089, p.21:

1.Measure pressure using Manifold Gauge when system is stopped, then compare with low pressure sensor value via View Mode or S-net.

2.Measure drain pump winding resistance at connector J7 on the main control. Expected: 12 to 16 ohms at room temperature.

3.Back-probe the pump driver output under load. Verify the board switches the pump at 120 VAC during the drain portion of the cycle.

Part DC31-00054A

Drain pump motor

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First step from the service manual

Get the full diagnostic procedure for E116.

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