Note
PROCEDURE 1
Step 1
Remove shelves.
Step 2
Remove crispers.
Step 3
Remove shelf cover
Step 4
Hold the cover and turn in counter-clockwise direction to loosen cover. Then, remove cover.
Step 5
Use 6mm Cross-head screwdriver to loosen the screw.
Step 6
Hold the edge of air duct to remove
Step 7
Disconnect the terminal for fridge temp. sensor.
CHECK AND TEST 1
Step 1
Connect damper terminal to terminals inside fridge.
Step 2
Unscrew cover of mainboard with a cross- head screwdriver.
Step 3
Offer signal to dampers from terminal in PCB area (between “A+” & “B+” or “A-” & “B-”)
Step 4
An oscilloscope should display a square wave signal.
Step 5
See if door of damper opens gradually.
DIAGNOSIS 1
PROCEDURE 2
Step 1
Unscrew with 6mm Cross-head driver.
Step 2
Remove plastic cover of damper.
Step 3
Lift damper out of air duct in foam.
CHECK AND TEST 2
Step 1
Use a standard signal producer to supply square wave to damper from terminal in fridge area.
DIAGNOSIS 2
CHECK AND TEST 3
Step 1
In duct area, check if terminal is pushed into final position.
Step 2
Check if terminal is filled with foam or not.
IF YES, please use tweezers to clean and
remove the foam.
Step 3
Check to ensure that wires are in proper order.
IF WIRE ORDER IS WRONG, PLEASE FOLLOW PROCEDURE 3 TO CORRECT THEM.
Step 4
Check to make sure wire order in the foam is right and/or see if it’s been cut off.
Step 5
Use multimeter to test connections.
DIAGNOSIS 3
DIAGNOSIS 4
Note
PROCEDURE 3
Step 1
Cut wire off.
Step 2
Peel off the sleeves.
Step 3
Check to ensure proper wire order and reconnect them.
Step 4
Tin soldering.
Step 5
Cover connecting point with electrical tape.
CHECK AND TEST 4
Step 1
Connect damper terminal to terminals inside fridge.
Step 2
Offer signal to dampers from terminal in PCB area (between “A+” & “B+” or “A-” & “B-”)
Step 3
An oscilloscope should display a square wave signal.
Step 4
See if door of damper opens gradually.
DIAGNOSIS 5
PROCEDURE 4
Step 1
Put damper into air duct in foam.
Step 2
Put the plastic cover on top of damper.
Step 3
Connect the terminal.
Step 4
Screw with 6mm cross-head screwdriver.
PROCEDURE 5
Step 1
Re-connect the terminals.
Step 2
Hold air duct by edges to put it back in place.
Step 3
Use a 6 mm cross-head screwdriver to tighten the screw clockwise.
Step 4
Hold the cover and turn it clockwise to tighten the lid, then move it backwards.
Step 5
Insert shelves.
TIPS DURING INSTALLATION PROCEDURES FOR FRIDGE AIR DUCT.
Connect the terminals.
Tip 2
Push terminals into place, then move wires to prevent crushing of wires with edge of air duct.
Tip 3
When reinstalling the air duct, first insert positive shaft into the negative hole.
Tip 4
Then, fasten the clasp on top using the same method.
DIAGNOSIS 6
Step 1
Power on the appliance, then open the door and press the mechanical switch pin, put your hand in front of fridge air duct outlet to verify.
