Service manual

PART III IMPORTANT PARTS - DISPLAY CIRCUIT BOARD
E-30
ENGLISH
DISPLAY CIRCUIT BOARD
1. After take off the front
panel remove 4 screws on
the upper plate.
3. Lift up the plastic top cover
from the top back hooks.
4. Unplug the display circuit
board wires from display circuit
board.
5. Remove a screw on the odor
sensor circuit board.
2. Unscrew 3 screws on the
plastic top cover.
Replace display circuit board
The display circuit board is also seldom broken down. If you confirm that the display circuit board is broken, you will follow
the below steps and install it correctly through the reverse operation.
1. Stop the operation and unplug the power cord.
2. Take off the front panel from the unit.
Display circuit
board wire
Remote signal receiver circuit
board wire
Odor sensor circuit
board wire
Display circuit board
The display circuit board is one of the most important parts of the unit. It is located inside the plastic top cover. The
circuit board is connected to the main circuit board by display circuit board wire. If the display circuit board wire
connections are loosened, or circuit boards are broken there will no display lights or incorrect display indicator lights on
the display panel. Pressing any buttons on the control panel will control the main circuit board through the display
circuit board wire for the unit to carry out the desired functions.