LG Heat Pump Error Code E296

E296 indicates an open circuit error in the main cooling solenoid valve. The system's control board is detecting that the electrical circuit through this refrigerant flow control valve is broken, meaning no current can pass through it. The unit shuts down to prevent operational damage until the fault is resolved.

A power reset may temporarily clear the error code, but E296 will return if the underlying open circuit fault in the solenoid valve or its wiring is still present. Resetting the unit without repairing the fault does not fix the problem and could delay a proper diagnosis. The code should be treated as a persistent fault requiring inspection.

Repair costs depend on the failed component. Replacing a solenoid valve coil or wiring harness typically costs between $150 and $400 including parts and labor. If the main control board has failed and requires replacement, costs can range from $400 to $900 or more depending on the specific model and local labor rates. A diagnostic service call is usually required before parts are ordered.

Some causes, such as a visibly disconnected wiring connector, can be addressed by a knowledgeable DIYer after safely shutting down the unit. However, diagnosing a failed solenoid coil or control board requires a multimeter and familiarity with reading resistance values. Any work involving refrigerant circuits or internal control boards should be performed by a certified HVAC technician.

No. The unit will typically shut down automatically when E296 is active, and attempting to force operation is not recommended. Running the system with a malfunctioning solenoid valve can result in improper refrigerant flow, which may cause compressor damage or reduced system efficiency. The fault should be diagnosed and repaired before returning the unit to service.