Trane 4TXK6512G1000AA, Service Manual, Page: 52 / 187

4.11 4TXK6548G1000AA 4TXK6560G1000AA
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Tc:Temperature
sensor of
condenser’s
middle position
Ts:Compressor
suction
temperature
sensor
Te: Defrost
tempreature
sensor
Tao:Outdoor unit
ambient
temperature
sensor
Td:Compressor
dischargetempe
rature sensor
Th:Temper
ature
sensor of
hot
water
(
optio
nal
)
E.E.V
:Elect
ronic
expa
nsion
valve
LP:L
ow
press
ure
switc
h
HP:H
igh
press
ure
switc
h
DER
D:De
mand
respo
nse
enabli
ng
devic
e
(Only
used
in
Austra
lia and
New
Zeala
nd
area
)
4W
V:Fo
ur
way
valv
e
BM
S:Bu
ilding
Man
age
men
t
Syst
em
B
LU
:b
lu
e
B
R
N
:b
ro
w
n
D
ef
in
itio
n
(
m
o
d
el
)
4T
X
K
65
48
G
10
00
A
A
4T
X
K
6
56
0
G
10
00
A
A
R
es
er
ve
d
T
si
n
k:
T
e
m
pe
ra
tu
re
s
e
ns
o
r o
f d
riv
e
m
od
u
le
h
ea
t s
in
k
SW
8
①
e
x
te
rn
a
l d
ry
c
o
n
ta
c
t
in
p
u
t(
O
N
/O
F
F
s
ig
n
a
l )
0 1 2 3
4 5 6 7 8 9 A B C D E F
BR
N
RD
E
xp
la
n
a
tio
n
o
f a
b
b
re
vi
a
tio
n
s
1
:
R
es
er
ve
d
R
es
er
ve
d
R
es
er
ve
d
R
es
er
ve
d
R
es
er
ve
d
R
es
er
ve
d
R
es
er
ve
d
R
e
se
rv
e
d
R
e
se
rv
e
d
R
e
se
rv
e
d
R
e
se
rv
e
d
R
e
se
rv
e
d
R
e
se
rv
e
d
C1
C2
A B