ー
13
ー
3. Unit operation related
Fault diagnosis
3-3 External alarm (operation) output does not turn ON even though unit alarm is detected
3-4 Even if remote controller prohibition is set, function settings can be individually changed by
the remote controller
1. Intelligent Controller
or
Communication
Adaptor
1-1
Have you definitely set [System Settings] → [Event Control]?
Yes 1-2
No
Modify settings
1-2
Is the external output wiring properly connected?
Intelligent Controller
Communication Adaptor
27P terminal board
20P terminal board
17, 18 (DO1)
13, 14 (DO1)
17, 19 (DO2)
13, 15 (DO2)
Is there disconnection, open circuit, or short circuit?
Yes
1-3
No
Correct wiring
1-3 Is the load side (alarm device, etc.) properly connected?
(Contact rating: DC30 V, 0.5 A)
Yes
1-4
No
Modify
1-4 Is the “unit alarm” one of the following?
· Filter cleaning sign
· Engine oil Inspection Sign
· Remote control Inspection Sign
* In the case above, the external bulk warning is not output.
Yes
(END)
No
1-5
1-5 Replace MAIN board of communication adaptor connecting bulk output signal.
If only an Intelligent Controller is used, replace the Intelligent Controller.
1. Intelligent Controller
1-1
Is the centralised address set?
(Confirm on the [Settings] → [System Settings] → [I/D unit
settings] screen)
Yes 2-1
No
Apply settings
2. ON / OFF
Controller
2-1
The ON / OFF Controller main-sub changeover of the linked
ON / OFF Controller (ON / OFF CON) is OFF
Is it set to (Main)?
Yes
Set it to ON
(Sub)
No 2-2
2-2
Is the “centralised control main-sub changeover” of the
linked ON / OFF Controller (ON / OFF CON) set to OFF
(Main)?
Yes
Set it to ON
(Sub)
No
2-3
2-3 Replace the ON / OFF Controller
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