HEATER

Hi Tom, Thank you for your question. Frost or ice on the evaporator coils will prevent air from flowing over the coils. No air flow will cause the refrigerant in the coils to remain in a liquid state and keep it from vaporizing. The refrigerant will travel past the coils and will eventually end up in the compressor and cause damage to it. If there is frost on the evaporator coils, this may caused by the following: 1. A bad defrost heater or the other components of the defrost system. (The defrost system consists of the defrost heater, the defrost timer and the thermostat/defrost control.) 2. High Humidity 3. An evaporator fan motor not working correctly or not at all. 4. No load on the evaporator coil. 5. Dirty evaporator coils. 6. Defrost intervals that are set too far apart. There are authorized service representatives located in your area. If you type, "Whirlpool technicians in Sterling Heights Michigan" in Google, the information will come up for you. We hope this helps. Thank you and have a great day.

Hello Miguel, thank you for getting in touch. Based on our understanding of the issue, we would suggest you replace the defrost heater, part number PS11723183, to fix the issue. We are sure this will help!