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OPERATION - FAULT MODE
The Fault mode function is disabled by default, it must be enabled via the menu to operate. The
Fault function will monitor the CO and NO
2
sensor lifetime and indicate when either sensor should
be replaced. If the device determines that the sensor has reached the end of its useful life and that
replacement is necessary, it will enter Fault mode. This will cause the Status LED to blink red and the
buzzer to beep once every 10 minutes. The LCD will periodically show "Sensor Fault". The Fault mode can
be disabled via the menu or enabled at any time. If enabled, and the device is in Fault mode, pressing the
TEST switch will "silence" the buzzer due to the Fault alarm only. Buzzer silence due to the Fault alarm will
hold until the fault condition is reset via the menu. The buzzer may still activate due to a setpoint alarm if
enabled. The Fault Mode display will show even if the LCD mode is set to off.
CO
xxx ppm
CO
Fault
NO2
Fault
OPERATION - RE-CAL MODE
The Re-Cal mode function is enabled by default, it must be disabled via the menu if it is not required. The
Re-Cal function will monitor the device and indicate when the CO or NO
2
sensors should be re-calibrated.
If the device determines that the sensor requires re-calibration it will enter Re-Cal mode. This will cause
the Status LED to blink red and the buzzer to beep once every 10 minutes. The LCD will periodically
show " CO Cal Required" or “NO
2
Cal Required” as applicable. If enabled, and the device is in Re-Cal mode,
pressing the TEST switch will "silence" the buzzer due to the Re-Cal alarm only. Buzzer silence due to the
Re-Cal alarm will hold until the Re-Cal condition is reset via the menu. The buzzer may still activate due
to a setpoint alarm if enabled. The Re-Cal Mode display will show even if the LCD mode is set to off.
OPERATION - SETUP MENU
The device has several parameters that can be configured locally via the Setup menu using the keypad
and LCD. All parameters default to typical values but the installer may want to change some values.
In some cases, such as the device network address, the installer MUST change the settings before
operation. Any changes made are saved in non-volatile memory and are restored in case of a power loss.
Only the menu items relevant to the device model will be shown. The menu can be accessed at any time
after the warm-up mode and if there is 5 minutes of inactivity the menu will close, and normal operation
will continue. Note that the TEST switch has no affect when the Setup menu is in use.
The menu has several items as shown below. To enter the menu, press and release the <MENU> key.
This will enter the Setup Menu step 1, pressing the <MENU> key a second time saves the setting and
advances to step 2. Each press of the <MENU> key saves the current setting and advances the menu
item. The <UP> and <DOWN> keys are used to make changes to program variables by scrolling through
the available options. Holding the <UP> or <DOWN> key will scroll through some options at a faster rate.
To access the keys open the cover, keys are located on PCB and are marked. When a value is changed, use
<MENU> to save it to memory and advance to the next menu item. The first column below shows what
will be displayed on the LCD, including the default value.
<Menu>
Press and release the <Menu> key to enter the Setup Menu
CO
xxx ppm
CO Cal
Required
NO2 Cal
Required
CO
xxx ppm
<MENU>
Press to advance to next menu item
CO Range
0-300ppm
Press the <UP> or <DOWN> keys to scroll through the available
options. The CO sensing range and output scale can be changed
to 0-100ppm, 0-150ppm, 0-300pm, 0-400ppm, or 0-500ppm. The
factory default CO range is 0-300ppm.
1. CO RANGE
Only if
CO is sensor is installed
& the output type is
Voltage or mA
IN-GE-GDTXXX-06
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