Samsung Heat Pump Error Code E107

E107 indicates that the low pressure sensor circuit has detected an open or short circuit condition. The control board monitors the sensor output voltage, and a reading below 0.4V triggers the short circuit fault. The unit shuts down to protect the compressor from operating under potentially unsafe conditions. A technician will need to inspect the sensor, its connector, and the wiring harness to diagnose the specific cause.

No, you should not attempt to bypass or ignore the E107 fault. The low pressure sensor protects the compressor from running in low refrigerant conditions, which can cause severe and costly internal damage. The system is designed to shut down when this fault is detected, and operating the unit with this protection bypassed risks compressor failure.

Repair costs depend on the root cause. If the issue is a loose connector or damaged wiring, repair costs are typically lower, often in the range of $100 to $300 including labor. A sensor replacement adds parts cost on top of the diagnostic and labor fees. If the fault is caused by a refrigerant leak, costs can rise significantly into the $300 to $800 or more range depending on the location of the leak and the amount of refrigerant required.

Some basic checks, such as inspecting the sensor connector for loose or corroded pins, can be performed by a knowledgeable DIYer. However, diagnosing whether the fault is a wiring issue, a failed sensor, or an actual refrigerant problem requires tools such as a manifold gauge set and the ability to read S-net data, which are typically in the hands of certified HVAC technicians. If refrigerant handling is involved, a licensed technician is required by law.

A power reset may temporarily clear the error code, but if the underlying fault in the sensor circuit or refrigerant charge has not been resolved, the E107 code will return once the unit attempts to operate. Resetting without diagnosis and repair is not a solution and could mask an ongoing problem that leads to further damage.