Removing the water level sensor
Warp the fastener on the top plate, pull out the jack and air
trip hose, then draw the water level sensor out from the top
plate.
Removing the control circuit board complete
First open the zygomorphous screw cap on the top plate, then demount the two
screws by cross-style screwdriver. Second demount the two screws behind the top
plate, slant the top plate, demount the seven screws on the control circuit board
complete, pull out the jack, then the control circuit board complete can be removed.
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