Nibe AMS10 - Page 54

AMS10-8 earlier models
P
N
U
W
V
264 - INVERTER ERROR
Is the connection between the
control board and the inverter
board ok?
YES
YES
YES
Does the LED on the inverter
board flash?
Replace the control board.
YES
Has the fault been corrected?
OK
Correct the connection.
Set JSW10 & 11 in position
according to table DIP switch *.
Is JSW10 & 11 correctly installed
on the inverter board?
Is there DC 15 V between the
switches CNI3:23 on the control
board? **/***
Replace the inverter board.
NO
NO
NO
NO
Is the connection between the
inverter board and the control
board ok?
NO
Is the voltage DC 15 V
after the fan has been
disconnected? **
YES
Replace the fan
NO
Connect signal cable securely
NO
Replace the inverter
board. If the problem
remains, also replace
the filter board
YES
YES
* For information about DIP switches, see page 60.
** See alarm 265 to check the voltage, page 55.
*** The voltage must not be less than DC 14 V.
NIBE AMS10Chapter 6 | Troubleshooting54