Mitsubishi Electric JT-MC206GS-W-E User Manual page 13

Troubles without error display
Symptom
The hand dryer does not
blow warm air.
The hand dryer does not
stop blowing air.
The air speed can not be
changed.
The hand dryer does not
blow air even though hands
are inserted.
Cause
Malfunction of the After checking that the connector is securely connected, meas-
heater switch ure the resistance across the heater switch on the display circuit
board (JT-33D). If the resistance is not normal, replace the dis-
play circuit board (JT-33D).
ON state
OFF state
Blown thermal Measure the resistance between the heater lead connectors (red
fuse of the heater and white).
If it is ∞ Ω, replace the heater (PTC).
Ambient tempera- When the ambient temperature is 18°C or lower, the hand dryer,
ture is low. which is equipped with the simple heater, does not blow suffi-
ciently warm air.
Malfunction of If the error persists after performing the above, replace the power
the power circuit circuit board (JT-33P).
board (JT-33P)
Malfunction of If the error persists after replacing the power circuit board (JT-
the control circuit 33P), replace the control circuit board (JT-33M).
board (JT-33M).
Dirt on the sensor Check if the sensor window gets dirty.
area
Influence of light Check if the sensor area is exposed to sunlight or strong light.
Malfunction of If the error persists after performing the above, replace the power
the power circuit circuit board (JT-33P).
board (JT-33P)
Malfunction of If the error persists after replacing the power circuit board (JT-
the control circuit 33P), replace the control circuit board (JT-33M).
board (JT-33M)
Malfunction of the After checking that the connector is securely connected, measure
air speed switch the resistance across the air speed switch on the display circuit
board (JT-33D). If the resistance is not normal, replace the dis-
play circuit board (JT-33D).
ON state
OFF state
Malfunction of If the error persists after performing the above, replace the con-
the control circuit trol circuit board (JT-33M).
board (JT-33M)
Hands are too Sensitivity range of the sensor is 8 to 13 cm directly below the
far away from the sensor.
sensor. When inserting hands, place hands close to the sensor.
Check Method and Remedy
Switch Resistance Judgment
0 Ω
∞ Ω
Switch Resistance Judgment
0 Ω
∞ Ω
─ 13 ─
Normal
Normal
Normal
Normal