The Sub-Zero error codes EC 15 is displayed when the system detects a leak in the sealed system.

Your refrigerator’s sealed system keeps it cool. It includes the compressor and condenser. When there’s a leak in this system, the repair is necessary to prevent further damage to your fridge.

There are a few ways to troubleshoot this problem. First, you can reboot the refrigerator by turning off the power to the outlet at the circuit breaker and waiting for a minute. Turn the power back on and see if the error continues.

If the problem persists, there may be a leak in the tubing or a problem with the compressor. These repairs require special tools and training, so it’s best to call a Sub-Zero error codes repair expert.