Components: Switch Box (Indoor Unit) - Daikin ERHQ011BA Installer's Reference Manual

14 Technical data

14.2.2 Components: Switch box (indoor unit)

b
Q1L
A7P
a
t
s
X9A
FU1
A1P
r
q
X13A
p
X6Y
X6YA
X5M
X2M
o
n
X1M
m
a Pump PCB A7P (Inverter PCB)
b Backup heater thermal protector Q1L
c Transformer TR1
d Terminals for backup heater X6M/X7M (*9W models only)
e Backup heater contactors K1M, K2M and K5M
f Booster heater contactor K4M
g Connectors X6YA/X6YB/X6Y
h Backup heater circuit breaker F1B
i Booster heater circuit breaker F2B. (Only for installations with
domestic hot water tank)
j Terminal block X2M (high voltage)
k Terminal block X3M. (Only for installations with domestic hot
water tank)
l Terminal block X1M (to outdoor unit)
m Cable tie mountings
n Digital I/O PCB A4P (only for installations with solar kit or digital
I/O PCB kit)
o Demand PCB for power limitation
p Terminal block X5M (low voltage)
q Socket X13A, receives the K3M connector. (Only for installations
with domestic hot water tank)
r Main PCB A1P
s Socket X9A, receives the thermistor connector. (Only for
installations with domestic hot water tank)
t PCB fuse FU1
Installer reference guide
63
c d d
X6M X7M X7M X7M
TR1
K1M K2M K2M K2M
e
e
e
f
K5M K3M
g
F1B F2B
h
i
X6YB
j
l
k
X4M
EHBH/X16
Daikin Altherma - Low Temperature Split
4P313776-1 – 2012.05