The ER CO error in Whitehouse refrigerator refers to a problem in the cooling system or refrigerator protection system.

This error can occur due to a decrease or drop in the refrigerant pressure

in the cooling system, temperature sensor malfunction, or a problem in the refrigerator protection system.

To resolve this issue, you can first check if the air path inside the refrigerator is blocked or not.

Also, check if the compressor is working properly and if the air filters are clean or not. If the ER CO error persists,

it is better to consult an experienced technician to diagnose and fix the problem.