Cathy for Model Number tbx18sa Freezer working pretty good but fresh food(bottom) not cooling properly. Frost forms on back wall of freezer but does defrost. Have replaced thermostat, but still having original problem. Is it the defrost timer? Fan in freezer works.
Answer Cathy, This issue would most likely be caused by a bad defrost heater or the timer. You can check to see if the heater is good by turning the defrost timer until it clicks an then check to see if the heater is coming on. If the heater does not come on then the heater is most likely the cause and if heater does come on then the defrost timer would be the cause. Read More... Answered by AppliancePartsPros.com | Wednesday, June 19, 2013