Electrical components
Communication boardAA23
Fuse for external heating cable (250 mA), max 45 W.AA23-
F3
DIP switch, addressing of outdoor unitAA23-
S3
Terminal block, KVRAA23-X1
Terminal block, communication from indoor moduleAA23-
X4
Communication with TBAA23-
X100
Compressor heaterEB10
(CH)
Drip tray heaterEB11
(DH)
Main fuse compressor unitF
FanGQ1
(FM01)
FanGQ2
(FM02)
Control board(PWB1)
Inverter board(PWB2)
Filter board(PWB3)
EMC filter for inverterRF2
EMC filter for incoming supplyRF3
Terminal block, incoming supply and communication with
board AA23
(TB)
Designations according to standard EN 81346-2.
Designations within brackets according to the supplier’s standard.
NIBE F2050Chapter 3 | The heat pump design18
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