8.1 RELIABILITY FAULTS:
BUTTON ON DISPLAY DOESN'T WORK
CHECK AND TEST 1
Step 1
If you have verified that
it is impossible to adjust
settings using the button
on the display board.
DIAGNOSIS 1
PROCEDURE 1
Step 1
Push a 6mm sucker onto display and turn the knob to strengthen suction force.
Wrap a belt around knob to make it easier to pull out of display board.
Reverse steps above to install display board. Pay attention to the key piomts below.
Tip 1
After connecting terminal, please use tape to fasten wires to avoid crushing with cover.
Tip 2
After putting display
into cavity, press edge
until you hear a clicking
sound, this means the
board is pushed into final
position.
Tip 3
Please press all buttons on display board to make sure it works well.
PROCEDURE 2
Step 1
Prize off the cover on door cap.
Step 2
Remove the screws (in total 2).
Step 3
Pull out the plastic.
Step 4
Disconnect the terminal for display panel.
Step 5
Remove tape.
Step 6
Push the display away from the corner.
Reverse steps above to install display board. Pay attention to the key points below.
Tip 1
Please press all buttons on display board to check if it works well or not. Make sure words and icons are clear.
Tip 2
If not, disassemble it and put tape onto the point indicated by red circle.
PROCEDURE 3
Step 1
Unscrew the screw of top LED cover with 6mm
Cross-head screwdriver.
Step 2
Prize up the LED cover with screwdriver.
Step 3
Remove the LED cover.
Step 4
Unscrew the screw of top LED bracket
with 6mm cross-head screwdriver.
Step 5
Disassemble the LED bracket.
Step 6
Disconnect the control
PCB wire connector.
Step 7 Remove the control PCB.
Reverse above steps to
install new control PCB.
CHECK AND TEST 2
GO BACK TO FAULT LIST RELIABILITY