Daikin Altherma EHVH/X16S18+26CA Installer's Reference Manual page 69

k Digital I/O PCB A4P (only for installations with solar kit or digital
I/O PCB kit)
l Demand PCB for power limitation
m Terminal block X5M (low voltage)
n Main PCB A1P
o PCB fuse FU1
ERHQ011~016BA + ERLQ011~016CA + EHVH/X16S18+26CA
Daikin Altherma - Low Temperature Split
4P313777-1C – 2012.11
14 Technical data
Installer reference guide
69