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Sharp KI-N50E-H Service Manual page 25

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3. Temperature sensor error 「C4」
(1) Overview
Error mode that activates when a short-circuit or broken wire is detected in the circuit to detect temperature.
Operation of all modes continues and the unit can be operated normally.
(2) Detection time and conditions to occur
During all modes when unit is running.
(3) Load operation
All load outputs continue normal operation (assume the temperature is 20℃).
(4) Error display
"C4" indication flashes in [888] Lamp.(*1)
Other indicators are in the same before this error occurred.
(5) Button operation
All buttons are effective as usual.
(6) Solution
This error mode automatically canceled when A/D input of temperature sensor is in the normal range.
(7) Notes
Humidity sensor error does not occur in this models.
*1: "℃" and "C4" blinks.
4. Communication between microcomputers error 「C6」
(1) Overview
Error mode that activates when the communication between LSI1(MASTER) and LSI2(SLAVE)becomes interrupted.
(2) Conditions to occur
It detects when normal data transmission / reception has been interrupted for 8 seconds or more.
(3) Load operation
All load output is turnd off when communication between microcomputers(operation) error occurred.
In the other cases, continue operation.
(4) Error display
Communication between microcomputers(dust sensor) error C6 flash.(*2)
Other indicators are in the same before this error occurred.
(5) Button operation
All buttons are effective as usual.
(6) Solution
This error mode automatically canceled when the communication between microcomputers is restored.
*2: "µg" and "C6" blinks.
5. Plasmacluster Unit data error 「C8」
(1) Overview
Error mode that activates when there is a problem with Plasmacluster Unit.
Communication error
When communication error occurs in EEPROM.
Imitation
When Plasmacluster unit is imitation.
Data error
When the unit operation total time data is abnormal.
(2) Detection time and conditions to occur
① Communication error
When writing data to EEPROM and reading data.
② Imitation
When reading data to EEPROM.
③ Data error
When reading data to EEPROM.
When unit is running,
① Communication error
When the EEPROM signal could not be checked three times consecutively.
② Imitation
When the value of the EEPROM address does not match the predetermined value.
③ Data error
When unit operation integration time is abnormal.
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