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12
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Error Mode Display
Checkpoint
Check Method and Remedy
Power
Heater
(Lamps do not light.)
Power supply
voltage
Check that approx. 120 V AC is supplied at both ends of the power
cord connections on the terminal block.
■
If 120 V AC is not supplied, check the following points.
1
Check that the circuit breaker is turned ON.
2
Check that the power cord is connected securely to the terminal
block.
Power supply
voltage on the
power circuit
board
Check that approx. 120 V AC is supplied between TAB1 and TAB2
(orange) on the power circuit board.
●
If 120 V AC is not supplied, check the following points.
Power supply
voltage on the
filter circuit board
Check that approx. 120 V AC is supplied to the following points in
the order of
1
and
2
.
1
Between TAB20 and TAB21 (white and black)
If approx. 120 V AC is not supplied, check the power supply
voltage of the circuit breaker.
2
Between TAB22 and TAB23 (orange)
If approx. 120 V AC is not supplied, replace the filter circuit board.
●
When 120 V AC is supplied, check the following points.
Connector dis-
connection for
the display circuit
board
Check if the connector CN19 on the display circuit board or CN18
on the control circuit board is disconnected.
Connector discon-
nection between
the circuit boards
Check if the connector CN2 on the power circuit board, CN5 on the
control circuit board, or CN30 or CN31 on the filter circuit board is
disconnected.
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 hand dryer does not operate even after replacing the control
circuit board, replace the power circuit board.
Malfunction location quick reference chart
(The malfunction location is indicated by the lamp lighting status.)
: ON
: Slow blinking (ON for 0.4 seconds/ OFF for 0.4 seconds)
: OFF
: Fast blinking (ON for 0.1 second/ OFF for 0.1 second)
Description of the error display
Power lamp
Heater
lamp
or
Detected content
Cause
Tamper-proof timer
Overvoltage, undervoltage detection
Motor lock error
Motor overspeed error, step-out error
Overcurrent detected
Motor current detection error
Motor signal error
Microcomputer error
Fusing
Insertion of foreign objects, continuous operation
Overvoltage impress, undervoltage impress, control circuit
Power circuit, blower
Air filter, blower, power circuit
Blower (short circuit), power circuit (overcurrent)
Power circuit, disconnected motor
Power circuit, disconnected motor
Control circuit
Current fuse, thermal fuse in motor
Power lamp
Heater lamp
Troubles with error display
