Samsung MXD-K100XN Installation Manual page 33

Fan Error
Outdoor unit display
Explanation
Reason
1) Self check
Did you set up the system to receive the
fan feedback? (Refer to page 10)
Is fan working?
When the AHU fan is
operating, does fan feedback cable offer
SHORT signal?
Change the Control-KIT PBA.
CAUTION
• 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 .
When Control-KIT outputs fan operation status signal and the fan feedback
signal stays OPEN for more than 10 seconds.( AHU-KIT only)
• Poor AHU fan operation
• Missing or Incorrect circuit system for fan feedback check.
Yes
Yes
Yes
Set the Install option 05 series SEG21 "0".
(Disables fan feedback signal.)
No
Do you need fan feedback?
Connect feedback signal to fan
check terminal on Control-KIT.
Ensure that Install option 05 series SEG21 "1".
No
Check the AHU fan control.
Re-arrange the Control-KIT circuit again to output
No
the appropriate fan feedback signal depending on
the fan operation status.
No
Yes
English 33