Mitsubishi Electric JT-SB216ESH-DG-CE, Handbook

Page: 20 / 59

—21—
Power
If the power switch is turned ON while the sensor is shielded,
an error occurs.
Turn OFF the power switch, in the state that the sensor is not
shielded, and then turn ON again the power switch.
Check if TAB7, 8 or 9 is disconnected.
Visually check for cracks on the circuit board, corroded
electronic parts, defective soldering, etc. Defective light
emitting circuit board
(Panel (front) side)
Disconnected light
emitting circuit board
Dirty sensor
window
Leftover object
Disconnected lead
wires of light
emitting circuit board
Sensor is
shielded at the
power ON.
Leftover object
Disconnected lead
wires of light
receiving circuit board
Disconnected light
receiving circuit board
Defective light
receiving circuit board
(Panel (back) side)
Defective control
circuit
Error Mode Display Cause Check Method and Remedy
Check screws clamping the heat sink for missing or
looseness. Missing or loose
heat sink screws
If no error is found after checking the above, replace the
control circuit board. Defective control
circuit
(Heat sink overheat error)
,
Heater
O
Check
,
Blue LED
O
Disconnected
motor lead wire
Power
O
Power
@
Power
,
Check if the lead wire of the light receiving circuit board (CN7 or
CN14) is disconnected. (CN14 is on the light receiving circuit board.)
Check the light receiving circuit board for disconnection or
displaced mounting position.
Visually check for cracks on the circuit board, corroded
electronic parts, defective soldering, etc.
Dirty window may shield incoming light. Make clean the
sensor window.
Check if the lead wire of the light emitting circuit board (CN5 or
CN15) is disconnected. (CN15 is on the light emitting circuit board.)
Check the light emitting circuit board for disconnection or
displaced mounting position.
If no error is found after checking the above, replace the
control circuit board. Defective control
circuit
(Current detection circuit error)
Heater
O
Check
,
Blue LED
O
If no error is found after checking the above, replace the
control circuit board.
Check the inside of drying area for any object left over and
shielding the sensor.
Sensor is
shielded when
turning the power
switch ON.
Dirty window may shield incoming light. Make clean the
sensor window. Dirty sensor
window
(Light receiving circuit board
error)
@ Occurring at the power ON
Heater
O
Check
,
Blue LED
O
Check the inside of drying area for any object left over and
shielding the sensor.
(Light emitting circuit board
error)
@
Occurring at the power ON
Heater
O
Check
@
Blue LED
O
If no error is found after checking the above, replace the
control circuit board. Defective control
circuit
If the power switch is turned ON while the sensor is shielded,
an error occurs.
Turn OFF the power switch, in the state that the sensor is not
shielded, and then turn ON again the power switch.