Question about Kenmore 77554 / 77543 Bottom Freezer French Door Refrigerator
If tempt will not increase i would say the board is bad . and would replace it . sensors also could do this so if both sides do not adjust repl board and if only ref or freezer then do the senor on the side that won't adj . mm
Posted on Nov 15, 2010
My first thought is that the thermostat is having a problem, but a temperature sensor could be having a problem. Also, and maybe more likely, the defrost thermostat could be bad. Contact the Sear's support site for parts, or call a Sear's Service Center to see what they think it is. Since the defrost thermostat allows the temperature to rise, and hence defrost, it would make sense it's faulty. I would just replace it, since it was a demo (and probably a return that they couldn't figure out).
Good luck, and hope this helps.
Posted on Nov 09, 2010
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Posted on Jan 02, 2017
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To enter Self Diagnostic mode, both temperature control panel displays must be illuminated. A display can be illuminated by pressing an adjacent temperature adjustment button. When both displays are illuminated, set the freezer and refrigerator temperature settings to 5. Simultaneously press and hold all
4 temperature adjustment buttons for approximately 3 seconds. A flashing 0 in the refrigerator and freezer displays will indicate that the refrigerator is in Self Diagnostic mode.
For temperature control panels with single-digit displays, the COLDER temperature adjustment button will increment the numbers up and the WARMER temperature adjustment button will increment the numbers down. Use the freezer temperature adjustment buttons to enter the test code number in the freezer display. Use the refrigerator temperature adjustment buttons to enter the test code number in the refrigerator display. When a test code has been entered, the displays will flash to confirm the test. Press the HOLD button for 3 seconds to begin the test.
For temperature control panels with 3-digit displays, the COLDER temperature adjustment button will increment the numbers down and the WARMER temperature adjustment button will increment the numbers up. Use the freezer temperature adjustment buttons to enter the test code number in the freezer display. Use the refrigerator temperature adjustment buttons to enter the test code number in
the refrigerator display. When a test code has been entered, the displays will flash to confirm the test
code. Press any button other than a temperature adjust button to begin the test.
When testing has been completed, do one of the following things:
• Enter code 1 5 to completely reset the system.
• Enter code 1 6 to exit diagnostic mode. The temperature control panel is reset automatically.
• Unplug the refrigerator for at least 10 seconds. Test mode will terminate when the refrigerator is plugged back in.
Test mode will terminate automatically after 15 minutes of inactivity.
You need to cycle your freezer display to indicate 0 and your refrigerator display to 7.
Control and Sensor System Self-Test (0 7)
This test checks all five thermistors located throughout the unit. Once the test is initiated, the test code (0 7) will stop flashing and the thermistor test results will appear on the freezer display in the test order listed below. The thermistor test sequence number will not be shown on the display.
If the unit is not equipped with the Quick Chill option, the third thermistor (quick chill) will display a 0 and 3 audible beeps will sound at the temperature control panel. This is not a failure if the unit is not equipped with the Quick Chill option.
Thermistor test results:
• P = Pass
• 0 = Failed
• S = Short to 5 VDC
• B = Bad amplifier
Thermistor test sequence is:
1. Fresh food top thermistor
2. Fresh food bottom thermistor
3. Quick chill thermistor (displays 0 if unit is not equipped with Quick Chill option)
4. Evaporator thermistor
5. Freezer thermistor
Note: Thermistor test results will be displayed in the sequence shown above. The thermistor test sequence number will not be shown on the display.
Note the failures if any. Should ANY of thermistors fail you must replace it.
Having said that... at this point your stick with doing a manual defrost by unplugging the unit and directing a fan into the compartment for just over 2 hours to make sure ALL of the ice on the coils and in the drains has melted. (Yes it makes a water mess!)
After the manual defrost restart the unit / plug it in and once the compressor starts listen for the evaporator fan when the door switch is actuated and the condenser fan in the bottom of the unit any time the compressor is running. If either of the fans are not running you must find out why. Can be a door switch, motor winding or power to the motor. The door switch does not affect the condenser fan.
Finally if the unit is not automatically defrosting due to a component failure... i.e
Heater, themistor, or wiring you will see ice build up again in 2 to 3 days again and you will have to keep going through the manual defrosting routine until the automatic defrosting problem is resolved.
Thanks for choosing FixYa.
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