72
Failure mode detected by remote controller or central controller (TCC-LINK)
“1 : 1 Model” Connection Interface: TCB-PCNT30TLE2
*1 The check code cannot be displayed by the wired remote controller.
(Usual operation of air conditioner becomes unavailable.)
For the wireless models, a trouble is notified with indication lamp.
*2 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
Judgment and measures
Check code
Cause of operation
Status of air
conditioner
Condition
Not displayed
at all
(Operation on
remote
controller is
impossible.)
No communication with header indoor
unit
• Remote controller wiring is not
correct.
• Power of indoor unit is not turned
on.
• Automatic address cannot be
completed.
Stop
—
Power supply trouble of remote controller, Indoor
EEPROM trouble
1.Check remote controller inter-unit wiring.
2.Check remote controller.
3.Check indoor power wiring.
4.Check indoor P.C. board.
5.Check indoor EEPROM.
(including socket insertion)
→
Automatic address repeating phenomenon
generates.
E01
*1
No communication with header indoor
unit
• Disconnection of inter-unit wire
between remote controller and
header indoor unit
(Detected by remote controller side)
Stop
(Automatic
reset)
* If central
controller
exists,
operation
continues.
Displayed
when trouble is
detected
Receiving trouble from remote controller
1.Check remote controller inter-unit wiring.
2.Check remote controller.
3.Check indoor power wiring.
4.Check indoor P.C. board.
E02
Signal send trouble to indoor unit
(Detected by remote controller side)
Stop
(Automatic
reset)
* If central
controller
exists,
operation
continues.
Displayed
when trouble is
detected
Sending trouble of remote controller
1.Check sending circuit inside of remote controller.
→
Replace remote controller.
E09
There are multiple master remote
controllers.
(Detected by remote controller side)
Stop
(Follower unit
continues
operation.)
Displayed
when trouble is
detected
1.In 2-remote controllers (including wireless), there
are multiple header units.
Check that there are 1 master remote controller
and other sub remote controllers.
L20
Duplicated indoor central addresses
on communication of central control
system
(Detected by indoor / central
controller side)
Stop
(Automatic
reset)
Displayed
when trouble is
detected
1.Check setting of central control system network
address. (“1 : 1 Model” Connection Interface
SW01)
2.Check “1 : 1 Model” Connection Interface P.C.
board.
Central
controller
L20
—
*2
Communication circuit trouble of
central controller
(Detected by central controller side)
Continues
(By remote
controller)
Displayed
when trouble is
detected
1.Check communication wire / miswiring
2.Check communication (U3, U4 terminals)
3.Check “1 : 1 Model” Connection Interface P.C.
board.
4.Check central controller (such as central control
remote controller, etc.)
5.Check terminal resistance. (TCC-LINK)
Central
controller
(Send)
C05
(Receive)
C06
—
Indoor Gr sub unit trouble
(Detected by central controller side)
Continuation /
Stop
(According to
each case)
Displayed
when trouble is
detected
Check the check code of the corresponding unit from
remote controller.
Central
controller
P30
