Sierra Monitor Corporation IZS31 - Manual (Page 19)

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8. LED display
„ POWER LED ・・・ The power supply input and the connection of the sensors are displayed.
LED name Functions
MAIN Lights up when the power supply is applied. (Green)
(Flashes when wrong power supply is applied. ） POWER
SNSR Lights up when the auto balance sensor is connected.(Green)
„ ION LED ・・・ The discharged ion polarity and ion balance are displayed.
・The ion balance state can be identified with the LED display.
Ion balance OK LED
Below +/-30V Lighet up.(or flashes)
+/-30V or more Goes out
※ LED [OK] flashes when the ion balance nears the limit of the adjustment of the ion balance and indicates that
it is time for maintenance of the electrode needle.
„ ALARM LED ・・・ Failure of the ionizer will be indicated.
LED name Functions
HV Lights up when overcurrent is applied to the electrode
needle.（Red）
SNSR Lights up when the auto balance sensor doesn’t work properly.（Red）
ALARM
NDL
CHECK Lights up when dirt on the electrode needle is detected. （Red）
（Flashes when the dirt is being detected. ）
LED name Function
＋ Lights on when plus ions are generated.(Orange)
OK ［With auto balance sensor］Condition of the ion balance （Green）
［W/o auto balance sensor］ Goes out
ION
－ Lights on when minus ions are generated.(Blue)