Failure mode detected by remote controller or central controller (TCC-LINK)
2 The check code cannot be displayed by the wired remote controller.
(Usual operation of air conditioner becomes unavailable.)
For the wireless models, an trouble is notified with indication lamp.
3 This trouble is related to communication of remote controller (A, B), central system (TCC-LINK U3, U4),
and [E01], [E02], [E03], [E09] or [E18] is displayed or no check display on the remote controller according
to the contents.
Operation of diagnostic function
Status of
air conditioner
Condition
Cause of operation
Check code
Judgment and measures
Not di
s
played
at all
(Operation
on remote
controller i
s
impo
ss
ible.)
No comm
u
nication with header indoor
u
nit
• Remote controller wiring i
s
not correct.
• Power of indoor
u
nit i
s
not t
u
rned on.
• A
u
tomatic addre
ss
cannot be completed.
Stop
—
Power
su
pply tro
u
ble of remote controller, Indoor
EEPROM tro
u
ble
1. Check remote controller inter-
u
nit wiring.
2. Check remote controller.
3
. Check indoor power wiring.
4. Check indoor P.C. board.
5. Check indoor EEPROM.
(incl
u
ding
s
ocket in
s
ertion)
→
A
u
tomatic addre
ss
repeating phenomenon
generate
s
.
E01
∗
2
No comm
u
nication with header indoor
u
nit
• Di
s
connection of inter-
u
nit wire between
remote controller and header indoor
u
nit
(Detected by remote controller
s
ide)
Stop
(A
u
tomatic re
s
et)
∗
If center exi
s
t
s
,
operation contin
u
e
s
.
Di
s
played
when tro
u
ble
i
s
detected
Receiving tro
u
ble from remote controller
1. Check remote controller inter-
u
nit wiring.
2. Check remote controller.
3
. Check indoor power wiring.
4. Check indoor P.C. board.
E02
Signal
s
end tro
u
ble to indoor
u
nit
(Detected by remote controller
s
ide)
Stop
(A
u
tomatic re
s
et)
∗
If center exi
s
t
s
,
operation contin
u
e
s
.
Di
s
played
when tro
u
ble
i
s
detected
Sending tro
u
ble of remote controller
1. Check
s
ending circ
u
it in
s
ide of remote
controller.
→
Replace remote controller.
E09
There are m
u
ltiple main remote controller
s
.
(Detected by remote controller
s
ide)
Stop
(S
u
b
u
nit
contin
u
e
s
operation.)
Di
s
played
when tro
u
ble
i
s
detected
1. In 2-remote controller
s
(incl
u
ding wirele
ss
),
there are m
u
ltiple main
u
nit
s
.
Check that there are 1 main remote
controller and other
su
b remote controller
s
.
L20
Central
controller
L20
Stop
(A
u
tomatic re
s
et)
Di
s
played
when tro
u
ble
i
s
detected
1. Check
s
etting of central control
s
y
s
tem
network addre
ss
. (Network adapter SW01)
2. Check network adapter P.C. board.
D
u
plicated indoor central addre
ss
e
s
on
comm
u
nication of central control
s
y
s
tem
(Detected by indoor/central controller
s
ide)
—
∗
3
Central
controller
(Send)
C05
(Receive)
C06
Contin
u
e
s
(By remote controller)
Di
s
played
when tro
u
ble
i
s
detected
1. Check comm
u
nication wire / mi
s
wiring
2. Check comm
u
nication (U
3
, U4 terminal
s
)
3
. Check network adapter P.C. board.
4. Check central controller (
su
ch a
s
central
control remote controller, etc.)
5. Check terminal re
s
i
s
tance. (TCC-LINK)
Comm
u
nication circ
u
it tro
u
ble of central
control
s
y
s
tem
(Detected by central controller
s
ide)
—
Central
controller
P
3
0
Contin
u
ation/Stop
(According
to each ca
s
e)
Di
s
played
when tro
u
ble
i
s
detected
Check the check code of the corre
s
ponding
u
nit from remote controller.
Indoor Gr
su
b
u
nit tro
u
ble
(Detected by central controller
s
ide)
FILE NO. SVM-18041
- 51 -
