Auto Commissioning & Management System & Amount of Refrigerant Check Function
8
-1-
3.
R
esol
ving
the
P
ro
b
lem
o
f "
Chec
k R
e
qui
re
d"
1) T
em
p
e
ra
t
ur
e
S
e
ns
o
r
of
Ou
tdoo
r Un
it
Ŷ
T
hings
to
Check:
O
u
tdoor
temperat
u
re
of
each
o
u
tdoor
u
nit
,
Cond
_
O
u
t
,
s
u
ction
,
and
l
iq
u
id
l
ine
temperat
u
re
sensor
Ŷ
E
rror
Code:
None
(
showing
"
Check
Req
u
ired
"
on
the
res
ul
t
report)
Ŷ
Determine
the
temperat
u
re
sensor
stat
u
s
of
each
insta
ll
ed
o
u
tdoor
u
nit
before
r
u
nning
the
compressor.
Ŷ
When
ha
v
ing
a
"
Check
Req
u
ired
"
message
from
the
temperat
u
re
sensor
of
o
u
tdoor
u
nit
,
p
l
ease
check
in
the
fo
ll
owing
order.
[N
ote
]
-
When
there
is
a
history
of
o
u
tdoor
u
nit
operation
(
inc
lu
ding
A
u
to
Commissioning
&
M
anagement
System
operation)
,
p
l
ease
try
to
r
u
n
the
A
u
to
Commissioning
&
M
anagement
System
one
ho
u
r
after
the
l
ast
stop
time
of
system
operation.
No
Waiting for more than one hour.
Does
the difference in between
the temperature sensors of each
outdoor unit to be checked
exceed 10
℃
?
Are
the temperature
sensors assembled
properly
?
Are the temperature
sensor connectors connected
properly
?
Are
the resistance values of temperature
sensors shown
to be normal
?
Check for any deviation
in the sensors and replace PC
B
.
Finish
Check and Take Action
*
H
o
w
to
M
easure
R
es
i
stance
After separating the temperature sensor c
onnector from PC
B
, measure the resistance
between two connector terminals.
[Temperature Sensor Resistance]
Check and Take Action
Replace sensor
Is the difference
between the temperature sensors
of each outdoor unit to be checked
below 10
℃
?
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Temperature
Resistance