Two-way Cassette Indoor Unit Owner's Manua
23
8 Display of Light Board
The panel of this model is without nixie tube display. The error codes will be displayed through the
power light, operation light and timer light;
○
,
●
and
◎
stand for on, off and blink respectively.
Power light
○
◎
◎
◎
◎
Operation light
◎
●
○
○
◎
Timer light
●
○
●
○
●
Error code display sheet
Error
code
C0
A0
A3/A
4
L0
L1
L3
L5
d1
d3
d4
d6
d7
E0
db
Power
light
◎
○
○
●
●
●
○
◎
◎
◎
●
○
●
◎
Operati
on light
◎
◎
○
●
○
◎
●
○
●
◎
◎
◎
◎
●
Timer
light
◎
◎
◎
◎
◎
◎
◎
◎
◎
○
○
○
●
●
Error
descrip
tion
Com
muni
catio
n
error
To
be
deb
ugg
ed
Defr
ostin
g
Ind
oo
r
uni
t
err
or
Indo
or
fan
prot
ectio
n
Wat
er
full
prot
ectio
n
Free
ze
prot
ectio
n
Ind
oo
r
uni
t
PC
B
err
or
Ambi
ent
temp
eratur
e
sens
or
error
Inlet
pipe
temp
eratur
e
sens
or
error
Outle
t pipe
temp
eratur
e
sens
or
error
Hu
midi
ty
sen
sor
erro
r
Out
doo
r
unit
erro
r
Field
debu
ggin
g
code
oil
retur
n
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