Mitsubishi Electric JT-MC106G-W-NA Handbook page 12

Error Display
Sensor Check
(The hand dryer operates,
but no lights light up.)
Sensor Check
or or or
(Tamper-proof timer)
Sensor Check
(Power failure)
Cause
Tilted or fallen Make sure that the LEDs on the display circuit board are upright.
LED
Malfunction of Check if the connector CN8 on the display circuit board or CN7 on
the display circuit the control circuit board is disconnected.
board
If the connector is not disconnected, replace the display circuit
board.
(If a light-emitting device of the display circuit board is in a state of
short circuit or open fault, the lights do not light up.)
Malfunction of If the error persists after performing the above, replace the control
the control circuit circuit board.
board
40 seconds have If hands are inserted in the hand drying area for 40 seconds, the
elapsed. error occurs.
It returns to normal if hands are pulled out.
Remaining foreign Check for any objects left in the water receiver area, or any dirt
object sticking to the sensor area.
Dirty sensor If the hand dryer operates for 40 seconds because of remaining
window foreign objects or dirt on the sensor window, remove the foreign
objects or sensor dirt, and then reset the power.
Dirty sensor Dirt may shield the sensor.
window Wipe the dirt off the sensor window.
Malfunction of If the error persists after performing the above, replace the control
the control circuit circuit board.
board
Connector discon- Check if the lead wire connectors between the power circuit board
nection and the control circuit board are disconnected.
Malfunction of Replace the control circuit board.
the control circuit
board
Malfunction of Replace the power circuit board.
the power circuit
board
Power supply If there is power supply noise, use a noise filter for the power line
noise or take other noise-control measures.
Check Method and Remedy
─ 12 ─
Is the connector on the display
circuit board or the one on the
control circuit board securely
connected?