Description Of The Error Display; Troubles With Error Display - Mitsubishi Electric JT-SB116JH2-S-NA Handbook

Description of the error display

Power lamp
Heater lamp
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)
Power lamp lamp
Heater
or

Troubles with error display

Error Mode Display
Power Heater
(Lamps do not light.)
Detected content
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
Checkpoint
Power supply Check that approx. 120 V AC is supplied at both ends of the power
voltage 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
Power supply Check that approx. 120 V AC is supplied between TAB1 and TAB2
voltage on the (orange) on the power circuit board.
power circuit
board
●If 120 V AC is not supplied, check the following points.
Power supply Check that approx. 120 V AC is supplied to the following points in
voltage on the the order of 1 and 2.
filter circuit board 1 Between TAB20 and TAB21 (white and black)
2 Between TAB22 and TAB23 (orange)
●When 120 V AC is supplied, check the following points.
Connector dis- Check if the connector CN19 on the display circuit board or CN18
connection for on the control circuit board is disconnected.
the display circuit
board
Connector discon- Check if the connector CN2 on the power circuit board, CN5 on the
nection between control circuit board, or CN30 or CN31 on the filter circuit board is
the circuit boards disconnected.
Malfunction of If no error is found after checking the above, replace the control
the control circuit circuit board.
board
Malfunction of If the hand dryer does not operate even after replacing the control
the power circuit circuit board, replace the power circuit board.
board
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
Check Method and Remedy
block.
If approx. 120 V AC is not supplied, check the power supply
voltage of the circuit breaker.
If approx. 120 V AC is not supplied, replace the filter circuit board.
─ 12 ─
Cause