Samsung Heat Pump Error Code E136

E136 indicates a dual-pipe temperature sensor error, specifically an open circuit or short circuit condition detected by the PCB. The heat pump cannot read the temperature data it needs to operate safely, so it shuts down and displays this code. The fault originates in the sensor, its wiring harness, the connector at the PCB, or in some cases the PCB itself.

You should not attempt to bypass or ignore the E136 fault. The dual-pipe temperature sensor provides data the system relies on to regulate operation correctly, and running without accurate temperature feedback can cause the heat pump to operate outside safe parameters. The unit will typically shut itself down when this code is active, which is the intended protective response.

If the connector only needs to be reseated, the repair cost is limited to the service call fee, typically in the range of $75 to $150 depending on your location. Replacing the dual-pipe temperature sensor itself generally adds $50 to $200 in parts plus labor. If the PCB is at fault, repair costs can range from $300 to $700 or more, depending on parts availability and labor rates.

The first step, checking whether the sensor connector has come loose from the PCB and reseating it, is something a confident DIYer can attempt after powering the unit down. However, if the connector is secure and the fault persists, diagnosing a failed sensor, damaged wiring, or faulty PCB requires a multimeter and working knowledge of refrigerant system components, so professional service is recommended at that stage.

A power reset may temporarily clear the fault display, but if the underlying cause, such as a failed sensor, loose connector, or damaged wire, has not been corrected, the E136 code will return once the PCB re-evaluates the sensor circuit. A reset is only a lasting fix if the fault was triggered by a transient condition. Confirm the root cause before relying on a reset.