Tip & How-To about Refrigerators
These new fangled GE ice boxes have auto defrost boards in them. The boards control the compressor, the fans, and the damper as well as the defrost functions. The program in the computer board uses a method to determine defrost such as how many times the door was opened and how long the compressor has been going (hours) and how long it took for the last defrost cycle. this is to insure even defrosting no matter what climate you live in. The board relies on inputs from sensors located in the freezer compartment and the fresh food compartment. It also relies on a sensor for defrost action a larger bulb mounted on the coil. If the bulb gets out of place it could compromise defrost operations. The board itself is easy to remove and cannot be screwed up wiring wise because all of the quick connects are different. The board itself is mounted on 4 plastic standoffs. On one of these boards I removed I noticed a burntspot on the back side of the board. It was the compressor relay that activates the compressor from the board. My opinion is today's lead-less solder does not hold up as well as older type lead soldier and therefore the heat from the relay melts the soldier. I took a cheap iron and re soldiered the connection the board and re installed it. The ice box has been working great every since for more on diagnosing GE ice boxes with auto defrost controls check out my web page
The page has service manual downloadable for late model GE refrigerators.
Posted by Dan... on
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