Brand: MITSUBISHI ELECTRIC
Category: Other
Document Type: Manual
Language: EN
Manual for JT-SB216JSH-W-E
Uploaded: Nov. 21, 2025, 7:54 p.m.
Manual Publish Date: 2012-12-01
Turning the power switch ON/OFF:
- ON: Power lamp, heater lamp (if applicable), and blue illumination lamps turn on after 1.5 seconds. Initial settings are performed, including sensor sensitivity. The dryer is ready for operation after initial settings.
- OFF: Power lamp and blue illumination lamps turn off, and operation stops. The circuitry takes about 50 seconds to discharge retained voltage. Maintenance should only be performed after this discharge time.
Hand detection and operation:
- Infrared sensors (upper, middle, lower) detect hands.
- When hands are detected by lower or middle sensors, the blower motor turns on.
- Operation continues as long as hands are detected.
- If no hands are detected for 1.5 to 3 seconds, the motor turns off.
- The dryer operates for a maximum of 30 seconds per cycle.
Heater control (Applicable models):
- Heater turns ON with the blower motor.
- Heater does not turn ON if the heater switch is OFF or if the circuit thermostat temperature is 32°C or higher.
Blue illumination lamps ON/OFF:
- While power is ON and the motor is stopping, switching the air speed switch six times within 5 seconds turns the lamps OFF. The process is reversible to turn them ON.
Troubleshooting and error codes
| Error Mode Display | Checkpoint | Check Method and Remedy |
|---|---|---|
| Power Heater/Check (Fuse is blown) |
Power supply voltage | Check that the power switch is turned ON and that approx. 220 to 240 V AC is supplied at both ends of the power cord connections on the terminal block. If 220 to 240 V AC is not supplied, check the following points: ① Check if the earth leakage breaker is turned ON. ② Check if the power cord is connected securely to the terminal block. |
| Power Heater/Check (Fuse is blown) |
Power supply voltage on the power circuit board (JT-30P3H/ JT-30P3) | Check that approx. 220 to 240 V AC is supplied between TAB1 and TAB2 (orange) on the power circuit board (JT-30P3H/JT-30P3). If 220 to 240 V AC is not supplied, check the following points. |
| Power (Fuse is blown) |
Power supply voltage on the filter circuit board (JT-30F3) | Check that approx. 220 to 240 V AC is supplied to the following points in the order of 1 and 2. ① Between TAB20 and TAB21 (red) If approx. 220 to 240 V AC is not supplied, replace the power switch (assembly). ② Between TAB22 and TAB23 (orange) If approx. 220 to 240 V AC is not supplied, replace the filter circuit board (JT-30F3). |
| Power (Fuse is blown) |
Connector dis- connection for the display circuit board (JT-30S5) | When 220 to 240 V AC is supplied, check the following points. Check if the connector CN19 on the display circuit board (JT-30S5) or CN18 on the control circuit board (JT-30M3/JT-30M2) is disconnected. |
| Power (Fuse is blown) |
Connector discon- nection between the circuit boards | Check if the connector CN2 on the power circuit board (JT-30P3H/ JT-30P3) or CN5 on the control circuit board (JT-30M3/JT-30M2) is disconnected. |
| Power Heater/Check |
Malfunction of the control circuit board (JT-30M3/ JT-30M2) | If no error is found after checking the above, replace the control circuit board (JT-30M3/JT-30M2). |
| Power Heater/Check |
Malfunction of the power circuit board (JT-30P3H/ JT-30P3) | If the hand dryer does not operate even after replacing the control circuit board (JT-30M3/JT-30M2), replace the power circuit board (JT-30P3H/JT-30P3). |
| Power Heater/Check ☆ or ☆ |
Leftover object | Check for any objects left over and shielding the sensor in the hand drying area. |
| (Tamper-proof timer) | Dirty sensor window | Dirt may shield the sensors. Wipe the dirt off the sensor window. |
| Power Heater/Check | Connector dis- connection for the sensors | Check if the following connectors are disconnected. ① Sensor circuit board (lower) (JT-30S3) connector CN12 ② Sensor circuit board (middle) (JT-30S2) (2 locations) connectors CN15 ③ Light receiving circuit board (JT-30S1) connector CN11 ④ Control circuit board (JT-30M3/JT-30M2) connectors CN7 and CN8 |
| Power Heater/Check | Malfunction of the control circuit board (JT-30M3/ JT-30M2) | If no error is found after checking the above, replace the control circuit board (JT-30M3/JT-30M2). |
| Power Heater/Check ○ | Abnormal power supply voltage (Overvoltage or undervolt- age detection) | Check if correct power supply voltage is applied. • The error will occur if the power supply voltage is approx. 359 V AC or over, or approx. 127 V AC or under. *Note: If 359 V AC or over is applied, a current fuse on the power circuit board (JT-30P3H/JT-30P3) may blow. |
| Power Heater/Check | Malfunction of the power circuit board (JT-30P3H/ JT-30P3) | If no error is found after checking the above, replace the power circuit board (JT-30P3H/JT-30P3). |
| Power Heater/Check ☆ |
Motor malfunction (Motor start error) (Motor lock) (Motor over-revolution) |
Check if the motor is locked or turns smoothly by hand. If no error is found after checking the above, replace the power circuit board (JT-30P3H/JT-30P3). |
| Power Heater/Check | Blower (assem- bly) malfunction Motor overload | If the error display persists after replacing the power circuit board (JT-30P3H/JT-30P3), replace the blower (assembly). Check for causes of motor overload. (Too much higher power supply voltage, any object disturbing the motor revolution, etc.) |
| Power Heater/Check ☆ |
(Motor overcurrent error) (Current detection circuit error) |
Connector dis- connection for the motor |
| Power Heater/Check ☆ |
Blown thermal fuse of the motor | Measure the resistance between Red - White and Red - Black of the motor lead wires. If it is ∞, replace the blower (assembly). |
| Power Heater/Check ☆ |
Malfunction of the power circuit board (JT-30P3H/ JT-30P3) | If no error is found after checking the above, or if the error display persists after replacing the blower (assembly), replace the power circuit board (JT-30P3H/JT-30P3). |
| Power Heater/Check ☆ |
(Motor signal error) | Connector discon- nection |
| Power Heater/Check ☆ |
Malfunction of the power circuit board (JT-30P3H/ JT-30P3) | If no error is found after checking the above, replace the power circuit board (JT-30P3H/JT-30P3). |
| Power Heater/Check * |
Malfunction of the control circuit board (JT-30M3/ JT-30M2) | Replace the control circuit board (JT-30M3/JT-30M2). |
| Troubles without error display | ||
| Warm air does not blow. (JT-SB216JSH-W/H/S-E) | Heater switch | Check if the heater switch is turned ON. (Heater lamp lights with the heater switch ON.) |
| Warm air does not blow. (JT-SB216JSH-W/H/S-E) | Connector dis- connection for the heater | Check if the connectors TAB3 and TAB4 on the power circuit board (JT-30P3H) are disconnected. |
| Warm air does not blow. (JT-SB216JSH-W/H/S-E) | Blown thermal fuse of the heater | Measure the resistance between the connectors TAB3 and TAB4 on the power circuit board (JT-30P3H). At a heater temperature of 0°C or over: 100 Ω or under If the fuse is blown, the resistance will be ∞ Ω. In this case, replace the heater (PTC) and the power circuit board (JT-30P3H). |
| Warm air does not blow. (JT-SB216JSH-W/H/S-E) | Malfunction of the power circuit board (JT-30P3H) | Check if approx. 220 to 240 V AC is output at both ends of the connectors TAB3 and TAB4 on the power circuit board (JT-30P3H). If it is not output, replace the power circuit board (JT-30P3H). *Note: Approx. 220 to 240 V AC is output during operation, and it is not output during standby. |
| Warm air does not blow. (JT-SB216JSH-W/H/S-E) | Heater malfunc- tion | If no error is found after checking the above, replace the heater (PTC). |
| The hand dryer operates by itself. The hand dryer does not stop operation. | Connector dis- connection for the sensors | Check if the following connectors are disconnected. ① Sensor circuit board (lower) (JT-30S3) connector CN12 ② Sensor circuit board (middle) (JT-30S2) (2 locations) connectors CN15 ③ Light receiving circuit board (JT-30S1) connector CN11 ④ Control circuit board (JT-30M3/JT-30M2) connectors CN7 and CN8 |
| The hand dryer operates by itself. The hand dryer does not stop operation. | Malfunction of the sensor circuit boards (JT-30S1/2/3) | Visually check the sensor circuit boards for a defect such as a crack, corrosion, or a cold solder joint. If the error persists after replacing the control circuit board (JT-30M3/JT-30M2) in the next procedure, replace the defective sensor circuit boards (JT-30S1/2/3). |
| The hand dryer operates by itself. The hand dryer does not stop operation. | Malfunction of the control circuit board (JT-30M3/ JT-30M2) | If no error is found after checking the above, replace the control circuit board (JT-30M3/JT-30M2). |
| Air speed switch does not change the air volume. (JT-SB216JSH-W/H/S-E) | Connector discon- nection | Check if the connector CN21 on the control circuit board (JT-30M3) or CN4 on the power circuit board (JT-30P3H) is disconnected. |
| Air speed switch does not change the air volume. (JT-SB216JSH-W/H/S-E) | Malfunction of the power circuit board (JT-30P3H) | If no error is found after checking the above, replace the power circuit board (JT-30P3H). |
| The hand dryer makes abnormal noises. Air blow is weak. | Sucking of foreign matter | Check for any foreign matter sticking to the blower (assembly) vanes. |
| The hand dryer makes abnormal noises. Air blow is weak. | Clogged filter | Check the filter for clogging with dust, etc. |
| The hand dryer makes abnormal noises. Air blow is weak. | Incorrect wiring | Check if the motor lead wires of the blower (assembly) (red to TAB7, white to TAB8, black to TAB9) are connected to incorrect TABs on the power circuit board (JT-30P3H/JT-30P3). (If they are connected incorrectly, the motor turns in the reverse direction.) |
| The hand dryer makes abnormal noises. Air blow is weak. | Malfunction of the power circuit board (JT-30P3H/ JT-30P3) | If no error is found after checking the above, replace the power circuit board (JT-30P3H/JT-30P3). |