AB-6256
Specifications are subject to change without notice.
Building Systems Company
http://www.azbil.com/
Rev. 1.0 Jul. 2012 AB-6256 Y (W03)
(J: AI-6256 Rev. 1.6) Printed in Japan.
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Fault detection self diagnostics
This product contains fault detecting self diagnostic functions. Error or faulty operation occurring when the power is turned on or
during the normal operation is detected and indicated with the yellow LED and the too icon on the LCD as shown in Fig. 11.
Figure 11. Tool icon on the LCD
If error code except E000 (normal operation) and E032 (CO
2
concentration level out of 0-9999 ppm range) is displayed, there
may be something abnormal with the product. Please contact our service personnel. (See Fig. 10 for checking error code.)
Note that the yellow LED also lights up during: • Initialization
• Pressing a button
• Calibration
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