Nibe F2040 - Inverter Error

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
(JSW10) / DIP-switch
(JSW11), see page 61.
Is JSW10 , 11 correctly
installed on the inverter
board?
Is there DC 15 V between the
switch CNI3:2-3 on the control
board? (2), (3)
Replace the inverter board.
NO
NO
NO
NO
Is the connection between the
inverter board and the control
board ok?
NO
Is the voltageDC 15 V
when the fan is
disconnected? (3)
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
(2) See 265 to check the
voltage.
(3) In abnormal conditions the
voltage is below DC 14 V.
NIBE™ F2040Chapter 6 | Troubleshooting62