We have a similar problem with our Kenmore Elite Trio 795.77563600 (2007). It started out with the refrigerator light staying on after the doors are close. This caused the light casing to melt. So I disconnected the light and continued to use the refrigerator.
After a week, I started to get the ER FF error, which went away after we turned off the ice maker (on the refrigerator top door.)
Another week went by, the ER FF error returned for good. The error would disappear briefly after each recycle of power. I opened the freezer inside panel and observed the evaporator fan started, and stopped 3 times (10-15 seconds each) before the ER FF error appears. This sequence was controlled because I could verify 15 volts (I believe the spec. for the motor is 13 volts) when the the fan started, and no volts when the fan stopped.
The technician came out 2 days ago to replace the control board(Manufacturer Number EBR34917104
) and the light unit as part of the service flash SR46-515R4. He fixed the light staying on problem, but the ER FF problem remained. He claimed the ER FF error is a separate issue and I would have to put in another service call.
Today, I took both the ice maker fan and the evaporator fan out to test with external power source. They seemed to work OK. At least they turned at reasonable speed. (I had zero experience with refrigerator, reading this blog gave me courage)
A few recommendations here involve replacing the controller board and the evaporator fan motor. However, my board has just been replaced a few days ago, and the evaporator fan motor still seems to work. Is it possible that the evaporator is only working marginally and some how provides bad status signal to the control board? Seem unlikely, but I don't know.
It is also possible that both the old and new control boards are bad. Also unlikely, but possible.
Any advice before I put in an order for an evaporator fan motor as a last resort?
Thanks in advance.