My fridge stopped working after our neutral line in the house was severed blowing most appliances not on protectors. I replaced the control board hoping it would fix it like my stove but not so.
Reprogramed to code 12 and the board is working correctly fan comes on but make a chugging sound (did that when it worked right) but no compressor. I looked at the wiring diagram and see a relay for the compressor, could this be it or is there another fuse or issue I may have. How do I trouble shoot this from here? Or is my fridge beyond repair?
- Drew asked 10 years ago
Ok Brian I ran the diagnostics and none of the fans came on only the damper. at the end of everything (6) I pushed the up button on the freezer side and it displayed 7/5
I then closed the doors and it reset as expected.
So what is 7/5? and where the heck is the relay, I found the capacitor plugged into the side of the compressor , is the relay that part the capacitor is plugged into or does this unit even have one?
model number mff2557heb
Thanks for walking me through this,
Drew
- Drew answered 10 years ago
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Your welcome! The 7/5 at the end that you got was just a setting where you can calibrated the temps. of the unit. I did not include the information for these tests on my original post. I would be suspecting the control board if none of the fans came on as well as the compressor, if you did not replace the board yet. But since you have installed a new board it is not likely the new board is bad. I would double check your connections and that you entered the right program code. If that checks good I would check to see if your getting 120 V to the fans and compressor. Since you said your compressor was hot it should be getting some voltage. If you are getting 120 V to these components and they are sill not running you would need to replace the fan motor and start components of the compressor. Hopefully the compressor has not been damaged. Let me know if you need any further assistance. Good luck! Programming Mode: Note: The Program Code is located on the Serial Plate on this unit after the word Code. 1. Open the Fresh Food door and hold the Fresh Food door light switch closed while pushing the Freezer Temperature Down Key pad 3 times consecutively. Note: The 3 Keystrokes must be done consecutively and within 10 seconds. 2. Release the Fresh Food door light switch. 3. The control will display PE to confirm entry into the programming mode. Freezer Refrigerator p/E 4. Entry is confirmed by pressing the Freezer Down key once more. Note: All control functions will be turned off (Compressor, Defrost, Evaporator Fan, the damper will remain in its current position). 5. The control will display the current Program Code. This value should be validated with the Program Code printed on the unit serial plate. Freezer Refrigerator 2/5 Note: If the Program Code is correct, the Programming Mode is exited by closing the Refrigerator door(s). 6. To set the desired Program Code number press the Freezer and Refrigerator Up keys. The corresponding digit will be advanced with each key press. 7. Once the desired Program Code is displayed, press the Freezer Down Key until the Program Code begins flashing indicating it has been saved. Note: If you attempt to enter an invalid Program Code the control will not save the new code, but will flash the old code and this will be displayed. (The unit will NOT run with a Program Code of 00). 8. Once the Program Code has been saved the Programming Mode is exited by closing the Refrigerator door(s). If the new code is incorrect this process should be repeated after closing the Refrigerator door(s). The Programming mode can be exited at any time by closing the Refrigerator Door(s)
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Here is the Diagnostic tests for your unit. You will be able to turn on the fans and compressor from these tests. If you compressor is warm, it must be getting some kind of voltage to it. Also, your tech sheet that has this information on it is usually located under the toe panel. If you take the toe panel off in the front of the unit it may be tucked inside it or in a plastic bag on the cabinet under it.
Service Test Mode:
The service test functions are performed using the refrigerator display and keypad. Enter the Service Test Mode
by performing the following sequence of events:
1. Hold the refrigerator door light switch closed.
2. Press the Refrigerator Temperature Up keypad 3 times consecutively.
Note: The 3 Keystrokes must be done consecutively and within 10 seconds.
3. Release the refrigerator door light switch.
4. The control will display SE to confirm entry into the service mode.
Freezer Refrigerator
S/E
5. Entry to the Service Menu is confirmed by pressing the Refrigerator Up key once more.
6. The control will display its software version for 3 seconds.
Freezer Refrigerator
2/5
7. Following the software revision display the freezer display will read the first test number in the
diagnostic tree. The refrigerator display will be blank.
Freezer Refrigerator
1/
Note: All control functions will be turned off (Compressor, Defrost, Evaporator Fan, the damper will
remain in its current position).
8. You are now in the SERVICES TEST operational mode and may use the diagnostic tests.
The Service Test Mode can be exited at any time by closing the Refrigerator Door(s). Service Specifications
Service Test 1 – Defrost Thermostat & Defrost Circuit Test
When selected this test will display the state of the defrost thermostat. In order to perform this test the defrost heater will
be energized. The test is activated and deactivated using the Refrigerator Up key. Once activated, this test must be
deactivated to move to another test number. The Freezer Up / Down keys allow selection of the test to be
performed.
This test also allows observation and measurement of proper defrost function. You can observe defrost heat and voltages
while the test is activated.
Freezer Refrigerator
1/O
DEFROST THERMOSTAT OPEN
Freezer Refrigerator
1/ S
DEFROST THERMOSTAT SHORTED (CLOSED)
Service Test 2 – Compressor/Condenser Fan Test
When selected and activated this test will operate the Compressor/Condenser Fan circuit. You should evaluate proper
operation of the compressor and condenser fan. The Refrigerator Up key will toggle between “O” / “F” (ON & OFF)
the compressor drive circuit. The test must be “deactivated” or in the OFF position to move to another test selection.
Freezer Refrigerator
2/O
Freezer Refrigerator
2/F
OBSERVE COMPRESSOR & CONDENSER FAN FUNCTION
Service Test 3 – Evaporator/Freezer Fan Test
When selected and activated this test will operate the freezer fan. The Refrigerator Up key will toggle between “O” /
“F” (ON & OFF) the fan drive circuit. You will have to inspect the fan for proper function. The test must be “deactivated” or
in the OFF position to move to another test selection.
Freezer Refrigerator
3/O
Freezer Refrigerator
3/F
OBSERVE FAN OPERATION Service Specifications
Service Test 4 – Fresh Food Thermistor Test
When selected and activated this test will display Pass, Open, Short result for a test on the Fresh Food Thermistor
circuit as shown below. The test is activated and deactivated via the Refrigerator Up key, and must be
deactivated to move to another test selection.
Freezer Refrigerator
4/P
PASS RESULT
Freezer Refrigerator
4/O
OPEN RESULT
Freezer Refrigerator
4/S
SHORT RESULT
Service Test 5 – Freezer Thermistor Test
When selected this test will display Pass, Open, Short result for a test on the Freezer Thermistor circuit as
shown below. The test is activated and deactivated via the Refrigerator Up key, and must be deactivated
to move to another test selection.
Freezer Refrigerator
5/P
PASS RESULT
Freezer Refrigerator
5/O
OPEN RESULT
Freezer Refrigerator
5/S
SHORT RESULT
Service Test 6 – Open Damper Test
When selected this test will indicate the current position “O” / “C” (OPEN / CLOSED) of the refrigerator damper. The
Refrigerator Up key will toggle the damper open and closed. You must allow 1 minute for each attempt to change
the damper position. You should observe proper damper function.
Freezer Refrigerator
6/O
Freezer Refrigerator
6/C
OBSERVE DAMPER FUNCTION
- Brian, Ace Appliance answered 10 years ago
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Ok so the compressor is hot but not working no blowers or fans either. Is there a diagnostics I can run off the control board?
- Drew answered 10 years ago
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Hi. If the unit came on and the fans are running after programming the new board, it sounds like you programmed it correctly. I would check to see if the control board is sending proper voltage (120 v) to the compressor. If you have proper voltage to the compressor and its not running it could be the start components of the compressor or the compressor it self that is faulty. If you need further assistance please let me know.
- Brian, Ace Appliance answered 10 years ago
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