LG Heat Pump Error Code P716

P716 indicates that the outdoor unit discharge temperature has reached a level requiring protection control. The discharge temperature is the temperature of refrigerant gas exiting the compressor, and when it rises too high, the system shuts down to prevent compressor damage. This code points to issues affecting heat rejection or refrigerant flow in the outdoor unit. A qualified technician should diagnose the root cause before restarting the system.

No, you should not attempt to bypass or continuously restart the system while P716 is active. The protection control exists specifically to prevent compressor failure, which can result from sustained high discharge temperatures. Repeatedly overriding the error without addressing the root cause risks destroying the compressor, which is the most costly component in the system.

Repair costs vary significantly depending on the root cause. A coil cleaning or minor service call might range from around 100 to 250 dollars, while refrigerant recharge can add another 150 to 400 dollars or more depending on refrigerant type and the amount needed. A fan motor replacement typically falls in the range of 200 to 500 dollars including labor, and a compressor replacement, if required, can cost anywhere from 800 to over 2000 dollars. Getting a proper diagnosis first is the best way to understand the scope of the repair.

Some basic checks are safe for homeowners, such as clearing debris from around the outdoor unit and making sure the outdoor fan is spinning freely. However, diagnosing refrigerant levels, testing the discharge temperature sensor, or repairing the fan motor requires tools and certifications that most homeowners do not have. It is best to contact a licensed HVAC technician to properly diagnose and repair the underlying cause.

A power reset may temporarily clear the code and allow the unit to restart, but if the underlying condition causing high discharge temperatures has not been resolved, the error will return. Resetting without a proper repair can accelerate compressor wear. A technician should identify and fix the root cause before the system is returned to service.