| The temperature difference between the seatback thermal electric unit and seat cushion thermal electric unit is more than 30°C |
- When it detects for 4 seconds that the temperature difference between the seatback thermal electric unit and seat cushion thermal electric unit is more than 30°, it stops the output to the thermal electric unit, activates the climate controlled seat blower motor at the maximum position, and sends the external airflow for 30 seconds
- If the temperature difference is still more than 30°C after 30 seconds pass, it stops all output and enters the system OFF condition
- When the temperature difference between seatback thermal electric unit and seat cushion thermal electric unit becomes less than 20°C, the system recovers automatically
- If it detects that the temperature difference is more than 30°C after the automatic system recovery, it immediately stops all output and enters the system OFF condition
NOTE:
When the switch operation is performed before entering the system OFF condition, the fail-safe mode is reset.
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| The temperature of thermal electric unit is more than 110°C in the HEAT mode (any thermal electric unit in the seatback or seat cushion) |
- When it detects for 4 seconds that the temperature of the thermal electric unit is more than 110°C, it stops the output to the thermal electric unit, activates the climate controlled seat blower motor at the maximum position, and sends the external airflow for 30 seconds
- If the temperature does not become less than 105°C after 30 seconds pass, it stops all output and enters the system OFF condition
- When the temperature of the thermal electric unit becomes less than 105°C, the system recovers automatically
- If it detects that the temperature of the thermal electric unit is more than 110°C after the automatic system recovery, it immediately stops all output and enters the system OFF condition
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| The temperature of the thermal electric unit is more than 45°C in the COOL mode (any thermal electric unit in the seatback or seat cushion) |
- When it detects for 4 seconds that the temperature of the thermal electric unit is more than 45°C and less than 70°C, it starts the temperature monitoring of the thermal electric unit at 3 second intervals
- While monitoring, if it detects that the temperature continuously rises 2°C or more 4 times or reaches 70°C or more, it stops all output and enters the system OFF condition
- If it detects other results of monitoring, it continues activating in the COOL mode
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Thermal electric unit sensor open circuit in the HEAT mode
(in either the back and the cushion TEU) |
- When it detects for 4 seconds that the thermal electric unit sensor is an open circuit, it stops all output and enters the system OFF condition
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Climate controlled seat blower motor system open circuit
(in either the back and the cushion blower) |
- When it detects for 2 seconds that climate controlled seat blower motor is an open circuit while the climate controlled seat is being activated, and the battery status has been stable for the same 2 second period. it stops output to the thermal electric unit
- When it detects for 10 seconds that the climate controlled seat blower motor is an open circuit while the climate controlled seat is being activated, and the battery status has been stable for the same 10 second period. it stops all output and enters the system OFF condition
NOTE:
After detecting the climate seat blower motor system open circuit for 2 seconds, the system recovers automatically if the activation of the climate controlled seat blower motor is detected for 1 second or more.
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Switch input out of the specified range
(either heat input or cool input) |
- When it detects for 4 seconds that the rotary switch input is more than 30% of the vehicle battery voltage, it stops all output and enters the system OFF condition
- When the switch input returns to a value within the specified range, the system recovers automatically
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| Both HEAT switch and COOL switch input out simultaneously |
- During the standby mode, heating or cooling states, if both HEAT switch and COOL switch input are more than 6% of the vehicle battery voltage simultaneously, it stops all output and enters the system OFF condition
- When either switch input returns to a value within the specified range, the system recovers automatically
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| System voltage out of range |
- If the system voltage at the climate controlled seat control unit falls outside of the 8.5 to 16.5 V operating range, it stops all output after a 500 ms time period.
- When the system voltage returns to the normal operating range (10.5-15.5V with a 500 ms hysteresis), the system recovers automatically.
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