my display is reading 555 on freezer display and 555 on ref display ...i changed the main board and then it read 666 and 666...i changed the display board and it reads the same ... any idea where my problem is
Try putting the unit into diagnostics and see if it changes the display.
Control Diagnostics Using the Temperature Display
The temperature display has a self-diagnosis mode that can be accessed and will help the technician to test certain functions of the temperature display, defrost heater, damper, and interior fans. This mode can aid the service technician in quickly identifying failed or improper operation of certain components and systems. Control diagnostics using the display does not use error codes to identify problems. Instead, the temperature display allows access to components or systems to be checked if a problem is detected. The temperature display must be in an active mode before entering the self-diagnosis test. If the display is blank, press any temperature button once, then release it. The display will show actual temperatures. Enter the diagnostic mode by pressing both the freezer temperature (COLDER and WARMER) pads and the refrigerator temperature (COLDER and WARMER) pads simultaneously. All four pads must be held for approximately 3 seconds. Blinking "00"s in both the freezer and refrigerator sections of the display indicate the refrigerator has entered the test mode. Remove fingers within 5 seconds and press any pad to lock-in the test mode. The blinking "00"s will change over to solid (non-blinking) "0"s when the test mode is locked-in. Failure to lock-in the test mode within 30 seconds will time out the test and return the refrigerator to the normal cooling mode.