– 48 –
10-2. Primary Judgment
To diagnose the troubles, use the following methods.
1) Judgment by flashing LED of the signal receiving unit
2) Self-diagnosis by service check remote controller
3) Judgment of trouble by every symptom
Firstly use the method 1) for diagnosis. Then, use the method 2) or 3) to diagnose the details of troubles.
10-3. Judgment by Flashing LED of the signal receiving unit
While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the
contents of self-diagnosis are displayed with block on the indoor unit indication section.
Table 10-3-1
NOTES :
1. The contents of items B and C and a part of item E are displayed when air conditioner operates.
2. When item B and C, and item B and a part of item E occur concurrently, priority is given to the block of item B.
3. The check codes can be confirmed on the remote controller for servicing.
Item
Check
code
Block display
Description for self-diagnosis
A
OPERATION (Green)
Fl
as
hing di
s
pl
a
y (1 Hz)
Power f
a
il
u
re (when power i
s
ON)
B
OPERATION (Green)
Fl
as
hing di
s
pl
a
y (1 Hz)
Protective circ
u
it oper
a
tion for indoor P.C.
b
o
a
rd
C
OPERATION (Green)
TIMER (Or
a
nge)
Fl
as
hing di
s
pl
a
y (1 Hz)
Protective circ
u
it oper
a
tion for connecting c
ab
le
a
nd
s
eri
a
l
s
ign
a
l
s
y
s
tem
D
OPERATION (Green)
PRE.DEF (Or
a
nge)
Fl
as
hing di
s
pl
a
y (1 Hz)
Protective circ
u
it oper
a
tion for o
u
tdoor P.C.
b
o
a
rd
E
OPERATION (Green)
TIMER (Or
a
nge)
PRE.DEF (Or
a
nge)
Fl
as
hing di
s
pl
a
y (1 Hz)
Protective circ
u
it oper
a
tion for other
s
(incl
u
ding compre
ss
or)
the
s
ign
a
l
receiving
u
nit
indic
a
tion l
a
mp
fl
as
he
s
.
Which l
a
mp
doe
s
fl
as
h?
