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12
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Error Display
Cause
Check Method and Remedy
Power light (LED 1)
3 blinks
(Motor error)
Connector discon-
nection for the
motor
Check if the lead wire connectors between the motor and the
power circuit board are disconnected.
Motor brush at the
end of its life
Replace the blower (assembly).
Motor lock
Check if the motor vanes are locked.
Blown current fuse
(FUSE 3) or blown
thermal fuse of the
motor
Measure the resistance between the both ends of the motor lead.
If it is
∞
Ω
, replace the blower (assembly).
Malfunction of the
control circuit board
If no error is found after checking the above, replace the control
circuit board.
Malfunction of the
power circuit board
If the error persists after replacing the control circuit board, re-
place the power circuit board.
Power light (LED 1)
4 blinks
(Motor brush error)
Unusually worn-out
motor brush
Replace the blower (assembly).
Motor brush at the
end of its life
Replace the blower (assembly).
Malfunction of the
control circuit board
If the error persists after performing the above, replace the control
circuit board.
Malfunction of the
power circuit board
If the error persists after replacing the control circuit board, re-
place the power circuit board.
Power light (LED 1)
5 blinks
( Temperature detec-
tion error (Power circuit
board))
An abnormal tem-
perature has been
detected.
If the temperature on the power circuit board rises because of the
overuse, the hand dryer stops the operation.
Leave it until the temperature falls, and then check if the error oc-
curs again.
Malfunction of the
power circuit board
If the error persists after performing the above, replace the power
circuit board.
Power light (LED 1)
6 blinks
( Temperature detection
error (Control circuit
board))
An abnormal tem-
perature has been
detected.
If the temperature on the control circuit board rises because of the
overuse, the hand dryer stops the operation.
Leave it until the temperature falls, and then check if the error oc-
curs again.
Malfunction of the
control circuit board
If the error persists after performing the above, replace the control
circuit board.
Power light (LED 1)
7 blinks
(Microcomputer error)
Malfunction of the
control circuit board
Replace the control circuit board.
