Nibe F2040 - Page 69

268 - Inverter A/F
Does the fault remain when the
power supply unit is reset?
YES
NO
YES
Does the compressor function?
YES
Is the current betweenT26 and
T27 for 380 - 390 V DC ?
OK
Is IC2 damaged?
NO
YES
NO
NO
Replace the inverter board.
67Chapter 6 | TroubleshootingNIBE™ F2040