37
Chapter 6. Details of Functions via Communication
Event items
The following items can be processed as events by this device.
Event item name Event No. Overview
UV flame detector check
(combustion time)
A1 This event occurs if the combustion time exceeds the value set for “UV flame
detector check (combustion time).”
Use this event for maintenance when the flame sensor needs to be replaced
Product service life check
(total operating time)
A2 This event occurs if the total operating time exceeds the value set for
“Product service life check (total operating time).”
Use this event for maintenance when this device or all connected devices
should be replaced.
Product service life check
(total combustion count)
A3 This event occurs if the total combustion count exceeds the value set for
“Product service life check (total combustion count).”
Use this event for maintenance when this device or all connected devices
should be replaced.
False flame A4 This event occurs if the flame relay is on before startup and the start check
relay does not turn on after startup.
This event can be caused by false flame or flame relay contact welding.
Flame relay OFF A5 This event occurs if startup input is on during flame monitoring (PF) and the
flame relay is turned OFF (flame failure).
Use this event to check the flame detection status.
Flame relay OFF (shutter
closed)
A6 AUR355C: This event occurs if startup input is on and the shutter remains
closed for about 5 seconds.
Use this event for fault diagnosis of the flame detector or this device.
AUR355B: This event does not occur.
Name Address Event status
Event flag 3044W Bit 0: UV flame detector check (combustion time)
0: no
1: yes
Bit 1: product service life check (total operating time)
0: no
1: yes
Bit 2: product service life check (total combustion count)
0: no
1: yes
Bit 3: false flame
0: no
1: yes
Bit 4: flame relay OFF
0: no
1: yes
Bit 5: flame relay OFF (shutter closed)
0: no
1: yes
Bits 6 to 15
Undefined
If an event occurs, the relevant bit in the communication data event flag (3044W) is set to “1.” In addition, the
7-segment display shows the event code.
Handling Precautions
• If an alarms has occurred, pressing the DISP switch does not display the
event code even if an event has occurred.
• If multiple events have occurred, the displayed event codes are
automatically cycled.
• Once an event occurs, it is retained until the user clears it.
6 - 2 Event Function
To Next Page
Loading...
