33
ENGLISH
Error on a fan
Outdoor unit display
Description
When the feedback signal is maintained as OPEN status for 10 seconds after outputting the
fan operation signal from ASS’Y Control ( For AHU KIT)
Reason
• Fan operation of AHU KIT is abnormal.
• The circuit to detect the fan feedback signal of AHU KIT is not formed or
misconnected.
1. Checking method
Have you congured the system
to receive the fan feedback signal?
(Refer to p.12~13)
When the AHU KIT fan is in operation,
does the fan feedback signal provide
the contact signal in SHORT status?
Is the fan operating?
Yes
No
Set the 05 series SEG21 of AHU PBA installation option as “0”.
(It will not detect the fan feedback signal.)
Connect the feedback signal to fan check terminal of
ASS’Y control.
(It consist of contact signal)
Check the 05 series SEG21 in installation option of ASS’Y
control is set as “1”.
Do you need the fan feedback?
Yes
No
Check the fan control of AHU.
No
Form the control circuit so that the proper fan feedback
signal is output depending on fan operation status.
Replace the ASS’Y Control PBA.
No
Yes
Yes
• Only the contact signal without power supply should be entered to detecting terminal of fan feedback signal. If
voltage or current is connected other than the contact signal without power supply, the ASS’Y Control may be
damaged.
NOTE
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