The refrigerator door (side by side) was left open for 17 hours. After closing door and checking temp, it read 94 degrees. After running for several hours the refrigerator side read 63 (coldest) and the freezer side read 22 (coldest). Thinking the coil had froze up, I unplugged for a 2 hours and plugged back in, same temp results. Appliance repair man came out and said it needed freon, but recommended buying new unit, once there is a leak, nothing you can do. Odd that is was working fine prior to this. After visiting your site it sounds like it might be a Defrost Heater first, then some other options. Am I on the right track? Could it have burned out the Defrost Heater or is it something major like the Main Control Board? Thank you for your help and your wonderful website. Stephen
Answer Hello Stephen,
Leaving the door open will not cause a Freon leak. It also will not cause the defrost heater to burn out. It will however, cause the unit to be hot and will cause a frost build-up on the evaporator coils. You should re3move the back freezer wall and check for an ice build-up. The defrost cycle will never be able to remove the frost build-up caused by this so you will need to defrost the unit with a hair dryer. Plug the unit back in and let it run for 24 hours. If the temperature has not returned to proper levels it will be time to diagnose the issue starting with the fans and compressor, (running or not?). If there was a considerable build-up, defrosting should take care of the issue.
Freezer evaporator keeps building with ice not allowing the refrigerator to cool. I've replaced the defrost sensor twice. Everything works fine for about 2 months then the same thing happens. Could it be the heater?
Answer Hello John,
The defrost heater WR51X10055 can be the problem. You can test this with a resistance meter (ohm meter). Be sure when testing that the wires are dis-connected and tap on the heater while the meter is touching the terminals in case the element is broken and touching inside the glass tube. One good indication that the element has failed is that the glass tube will be blackened.