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11-2. Checking Method
On the remote controller (Handy type, For Central control) and the interface P.C. board of the outdoor unit, LCD
display part (Remote controller) to display the operation status or 7-segment display part (On the outdoor interface
P.C. board) is provided. Using this self-diagnosis function, the judgment method of defective air conditioner or
troubled position when a trouble occurred is described below:
The following table lists each check code that each device detects.
Confirm the check contents according to the checked position in the following table.
• Check from indoor remote controller or TCC-LINK central controller:
Refer to “Remote controller & TCC-LINK central display”.
• Check from outdoor unit: Refer to “Outdoor segment display”.
Check code display list (Indoor air conditioner)
(Detection by fresh air intake unit)
Check code display
TCC-LINK
central &
remote controller
E03
E04
E08
E10
E18
F01
F02
F03
F10
F11
F29
L03
L07
L08
L09
L20
L30
P01
P10
P31
Outdoor 7-segment
Sub-code
—
—
—
—
E08
Duplicated indoor
unit Nos.
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
L08
—
—
—
—
—
L30
Detected indoor
air conditioner No.
—
—
P10
Detected indoor
air conditioner No.
—
—
Representative defective position
Regular communication error between indoor and
remote controller
Regular communication error between indoor and
outdoor units
Duplicated indoor units
Communication error between indoor MCU and other
MCU
Regular communication error between indoor master
and follower units
Indoor heat exchanger temp sensor (TCJ) error
Indoor heat exchanger temp sensor (TC2) error
Indoor heat exchanger temp sensor (TC1) error
Outdoor suction temp sensor (TA) error
Blow-off temp sensor (TF) error
Indoor and other P.C. board error
Duplicated indoor group master unit setting
There is group line in single indoor air conditioner
Indoor group address unset
Indoor capacity unset
Duplicated central control system address
Input of indoor outside error (Interlock)
Indoor AC fan error
Indoor overflow was detected.
Other indoor air conditioner error
Error contents
No communication from remote controller and network adapter
(No communication of central control system)
No communication from outdoor unit
Detection of address same to self address
MCU communication error between main and motor microcomputer
Regular communication is impossible between indoor master and
follower units
Open/short of heat exchanger temp sensor (TCJ) was detected.
Open/short of heat exchanger temp sensor (TC2) was detected.
Open/short of heat exchanger temp sensor (TC1) was detected.
Open/short of outdoor suction temp sensor (TA) was detected.
Open/short of blow-off temp sensor (TF) was detected.
Indoor EEPROM error (Other error may be detected in some cases.)
Multiple master units exist in a group.
Even one group connected indoor air conditioner exists in single
indoor air conditioner.
Indoor group address is not yet set.
(Detected also at outdoor unit side)
Indoor capacity is not yet set.
Duplicated setup of central control system address
Abnormal stop by outside error (CN80) input
Indoor AC fan error was detected.
(Fan motor thermal relay operation)
Float switch operated.
Follower unit of the group cannot operate by [E03/L03/L07/L08]
alarm of master unit
(Detection by remote controller)
Check code display
Remote
controller
E01
E02
E09
Outdoor 7-segment
Sub-code
—
—
—
—
—
—
Representative defective position
No main remote controller, Communication
(receive) error of remote controller
Remote controller communication (send)
error
Duplicated main remote controllers
Error contents
Signal cannot be received from indoor air conditioner or main remote controller
is not set. (including 2-remote controller control)
Signal cannot be sent to indoor air conditioner.
In 2-remote controller control, both remote controllers are set as main controller.
(Indoor master unit stops with alarm and follower unit operation continues.)
(Detection by central controller)
Check code display
TCC-LINK
central
C05
C06
—
C12
P30
Outdoor 7-segment
Sub-code
—
—
—
—
—
—
—
—
—
—
Representative defective position
Communication (send) error of central
control system
Communication (receive) error of central
control system
There are multiple network adapters.
Multipurpose device control interface batch
alarm
Group follower unit error
Error contents
Signal of central control system cannot be sent, or there are multiple identical
central devices (AI-NET).
Signal of central control system cannot be received.
There are multiple network adapters on the remote controller communication
line.(AI-NET)
Device error, which is connected to multipurpose device control interface of the
exclusive TCC-LINK/AI-NET
Group follower unit error
(For remote controller, unit No. and the above [
∗∗∗
] detail display)
