Mitsubishi Electric PQHY-P120THMU-A, Service Handbook

Page: 407 / 414

[
X
LED Monitor Display on the Heat source Unit Board ]
- 398 - HWE09080
76
4
0
0
1
1
111
10
1
IC
1 Op
er
at
ion mo
de
0
000
: St
op
0
0
0
1
:
V
ent
ila
ti
o
n
00
02 :
Coo
ling
0
0
0
3
: He
at
ing 00
04
:
Dry
B
W
he
n WR
2 is us
ed
, the
fo
ur
L
D
s on
th
e l
e
ft
(
LD1
-
4)
di
sp
la
y
op
er
at
ion
mo
de
, a
nd t
h
e
f
o
ur
L
D
s
on
th
e
rig
h
t (
L
D
5
-L
D8
)
d
ispl
a
y
po
rt
add
re
ss
.
(D
is
pl
ay
ed
a
lte
rn
at
el
y e
v
-
er
y f
iv
e
s
e
co
nd
s)
76
5
1
0
1
1
111
10
1
IC
2 Op
er
at
ion mo
de
76
6
0
1
1
1
111
10
1 I
C
3O
per
at
io
n
mo
de
76
7
1
1
1
1
111
10
1
IC
4 Op
er
at
ion mo
de
76
8
0
0
0
0
000
01
1
IC
5 Op
er
at
ion mo
de
D
a
ta o
n
in
doo
r un
it syst
em
No
.
SW1
Ite
m
Disp
la
y
Unit
(A,
B)
* 1
Re
m
a
rk
s
12
34
567
89
0
L
D1
LD
2
L
D3
LD4
L
D
5
L
D6
L
D
7
L
D
8
O
C
OS
*1
A:
The
c
o
n
d
it
io
n of
ei
ther
OC or
OS is
di
sp
la
ye
d in
di
vi
d
ual
ly
. B:
The
c
o
n
d
it
io
n of
th
e en
ti
re
r
e
fr
ig
e
ra
n
t sy
st
em i
s
di
sp
la
y
ed
.