Nibe AMS10 - Page 55

265 - INVERTER ERROR
Is the voltage 15 V DC between
the switches CNI3:2-3 on the
inverter board? */**
NO
NO
NO
Is the voltage DC 15 V at the fan
motor's contact?
Replace the control board.
Replace the inverter board.
If the fault remains also change
the filter board.
Defective cable between control
board and inverter board.
Is the voltage 15 V DC on the
control board side after the switch
(CNI3 or 1) has been removed? (*)
Replace the fan motor.
YES
YES
YES
Has the fault been resolved?
NO
Replace inverter board. OKYES
* Check the voltage according to the
image further down the page.
** In abnormal conditions, the voltage is
below 14 V DC.
Measurement between CNI3:2-3 on the inverter board:
Remove the surface
treatment on the
soldered points to
be measured.
2: 15 V (+)
3: GND (-)
AMS 10-8 AMS 10-12/16
15V (+)
GND (-)
55Chapter 6 | TroubleshootingNIBE AMS10