LG Heat Pump Error Code E262

E262 indicates a discharge temperature sensor breakaway condition on compressor 1. The system has detected a difference greater than 40 degrees Celsius between the digital discharge temperature sensor reading and the fixed discharge temperature sensor reading. This typically means one of the sensors has physically separated from its mounting point on the discharge line, causing it to measure ambient air rather than actual compressor discharge temperature.

It is not recommended to continue operating the unit with E262 active. The error exists specifically to protect the compressor from running without reliable discharge temperature monitoring. Operating without accurate discharge temperature data could allow the compressor to run under dangerously high temperatures, potentially causing compressor damage or premature failure.

If the repair only requires reseating a physically separated sensor, the cost could be limited to a service call fee, typically in the range of $75 to $150 depending on your location. If a discharge temperature sensor needs replacement, parts and labor combined generally range from $150 to $350. If the fault has caused compressor damage due to delayed repair, costs can be significantly higher.

Start by locating the compressor 1 discharge temperature sensors and checking whether either has come loose from its mounting position on the discharge pipe. If a sensor has separated, reattach it firmly to the pipe surface and secure the mounting clip. If both sensors appear properly seated, inspect the wiring connections for looseness or corrosion, and test sensor resistance values to determine if a sensor has failed and needs replacement.

A reset may temporarily clear the fault code, but the error will return if the underlying cause has not been corrected. If a sensor has physically separated or failed, the temperature differential will exceed the 40 degree threshold again as soon as the compressor runs and the code will reappear. The sensor must be properly repositioned or replaced before the fault will clear permanently.