Electrical connection
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
module
AA23-X4
Communication with TBAA23-
X100
Compressor heaterEB10 (CH)
Drip tray heaterEB11 (DH)
Main fuse compressor unitF
FanGQ1
(FM01)
FanGQ2
(FM02)
Control boardPWB1
Inverter boardPWB2
Filter boardPWB3
Terminal block, incoming supply and com-
munication with board AA23
TB
Designations in component locations according to
standard IEC 81346-1 and 81346-2. Designations
within brackets according to the supplier's standard.
F2040-8
AA23
AA23-F3
AA23-X4
AA23-X1
AA23-S3
AA23-X100
NIBE™ F2040Chapter 3 | The heat pump design16