LG Heat Pump Error Code E269

E269 indicates a Sump Sub 3 breakaway error, meaning the sump temperature sensor has been detected as separated from the compressor. This sensor monitors the compressor sump temperature to protect the unit from thermal damage. The heat pump shuts down when this fault is detected to prevent compressor operation without proper temperature monitoring. Checking whether the sensor has physically detached from the compressor is the first step in diagnosing this code.

No, you should not attempt to bypass or ignore the E269 fault. The sump temperature sensor is a protective input for the compressor, and running the unit without accurate sump temperature data risks serious compressor damage. The heat pump is designed to shut down when this fault is detected, and that shutdown should be respected until the sensor is properly reinstalled and the fault is cleared.

If the repair only requires repositioning and securing a detached sensor, labor costs for a service call typically range from $75 to $150 depending on your location and the technician's rates. If the sensor itself needs replacement, parts costs generally range from $20 to $80, with total repair costs falling between $100 and $250 in most cases. More extensive wiring repairs or harness replacement could increase the total cost.

If the sump temperature sensor has simply come loose from the compressor body, a knowledgeable DIYer can carefully reposition and secure the sensor back against the compressor shell. However, accessing the compressor compartment on a heat pump requires safe electrical shutdown procedures and some mechanical familiarity with the unit. If the sensor wiring, connector, or mounting hardware is damaged, a qualified technician should handle the repair.

A simple power reset may temporarily clear the fault display, but the E269 error will return if the underlying issue has not been corrected. The sensor must be physically reattached to the compressor and confirmed secure before the fault can be resolved permanently. Always address the root cause before resetting the unit.