I have a GE Select SSL27RGRCBS with a Defrost Problem. It started out somewhaat intermittantly, but has gotten more regular in the past week or two. I have searched the forum for other similar posts and answers and have a few questions.
I put the fridge into test mode by pressing the increase and decrease buttons on both the ff and freezer and am able to "manually" defrost. I also ran the "control and system sensor self test" which shows P for 1-4 and 0 for 5 which to my understanding is that the freezer thermistor is bad (1 and 2 are ff thermistors, 3 is the turbo-cool thermistor, 4 is the evap thermistor, and 5 is the freezer thermistor). Would the freezer thermistor control the defrost?
I also pulled the the motherboard out and visually inspected for a burnt spot by the fuse at the suggestion of a local appliance recycling center and there is no burnt spots visible. While I had the motherboard accessible, I ohmed out the 4 pins for the thermistors and got the same readings (don't remember #'s) on the 2 ff thermistors and the same readings on the evap and freezer thermistors. Just after I found the identical readings on the thermistors, I put the fridge back in test mode and checked the sensors again with the same results as before (Bad Freezer thermistor). What else should I look for to solve my defrost problem?
Thanks for any assistance with this challenge.