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TROUBLESHOOTING
Fan Error
Outdoor unit display
When Control-KIT outputs fan operation status signal and the fan feedback
Explanation
signal stays OPEN for more than 10 seconds.
( AHU-KIT only)
• Poor AHU fan operation
Reason
• Missing or Incorrect circuit system for fan feedback check.
1) Self check
Did you set up the system to
receive the fan feedback?
(Refer to page 14)
Is fan working?
When the AHU fan is
operating, does fan feedback
cable offer SHORT signal?
Change the Control-KIT PBA.
• Fan feedback check terminal should only receive OPEN/SHORT contact signal without voltage.
When the fan feedback check terminal receives contact signal with voltage may damage the
Control-KIT .
(Continued)
Yes
Yes
Yes
Set the K12 DIP switch ON.
(Disables fan feedback signal.)
No
Do you need fan feedback?
Connect feedback signal to fan
check terminal on Control-KIT.
Ensure that DIP switch K12,
on Control-KIT, is OFF.
No
Check the AHU fan control.
Re-arrange the Control-KIT circuit again to
No
output the appropriate fan feedback signal
depending on the fan operation status.
25
No
Yes
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