Model Number:
Brand: Brand
Age: Less than 1 year

Model Number: PHSC39EESS5
Brand: Frigidaire
Age: 6-10 years

Coil was frozen. Changed thermostat. Did a manual defrost. Both sides working fine. I have a recording thermometer placed in the coil compartment. The temperature has stayed within two degrees from zero for more than 30 hours. Fridge has ADC system. After the thermostat closes, what tells the system to go into a defrost cycle. It used to go about every six hours. Something isnít working. Thinking control board in fridge section. Would like your input. Thanks, DonClick image for larger version. 

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