led lights flashing 88 88 periodically not cooling

88 88 error code DIAGNOSTICS
1. automatic diagnosis makes servicing the refrigerator easy.
2. when a defect occurs, the buttons will not operate; but tones, such as ding, will sound.
3. when the defect code removes the sign, it returns to normal operation (reset)
4. the defect code shows on the refrigerator and freezer display.
(which is the code you are seeing at this time)

** lcd check function:
if simultaneously pressing ultra ice button and freezing temperature adjustment button for a second, display lcd graphics on. if releasing the button, the lcd graphic displays the previous status.
(we need the previous status error code)
for this model we usually get the error code of er if or er ff. both codes have the same problem so i will have that on here for you also.

ERFF or the ER IF code:

it is caused when feedback signal isn’t over 65 seconds during bldc fan motor operation. bldc = brushless dc electrick motor.

poor bldc motor connection, drive ic, and tr.

ERFF CODE
1. reset the unit and input test 1 mode.
(push button 1 time).

1. open the freezer door and check the air flow.
   *while an error code is being displayed, the fan doesnt work.
   status: svc action
   no windy go to 3
   windy go to 4

2. check the fan motor.
   rotate fan using your hand. if feel sticky, change the motor
   (cause of ice or rust inside of motor)

3. check the fan motor voltage.

point result svc action
(1) – (2) below 12 v change the pcb
(1) – (3) 0 or 5 v change the motor