LG Heat Pump Error Code E106

E106 on an LG heat pump means the indoor unit evaporator outlet (EVAP OUT) temperature sensor has separated from the refrigerant pipe it is supposed to be monitoring. The control board detected that the sensor is no longer reading a valid pipe temperature and shut the system down. This is primarily a mechanical mounting issue rather than an electrical or refrigerant fault.

No. The system is designed to stop operating when E106 is triggered because the control board cannot accurately monitor evaporator outlet temperature. Running the system without this data could lead to compressor damage or improper refrigerant flow. The fault should be addressed before resuming normal operation.

If only sensor repositioning is needed, a service call to diagnose and reattach the sensor typically costs in the range of $75 to $150 depending on your location and the technician's rates. If the EVAP OUT thermistor sensor needs to be replaced, parts and labor combined generally fall in the range of $100 to $250. Costs vary based on local labor rates and parts availability.

If the sensor has simply slipped off the pipe, a knowledgeable homeowner or DIYer comfortable opening the indoor unit can reattach it and secure it with insulation tape. However, if the sensor wiring is damaged or the thermistor itself has failed, a qualified HVAC technician should handle the repair to avoid further damage or an incorrect diagnosis.

A simple reset will not permanently clear E106 if the sensor is still separated from the pipe. The fault will return as soon as the system runs its startup checks and reads an invalid temperature. The sensor must be physically repositioned and secured against the evaporator outlet pipe before a reset will result in normal operation.