: Go on, : Flash, : Go off ALT (Alternate): Alternate flashing when there are two flashing LED SIM (Simultaneous): Simultaneous flashing when there are two flashing LED
(Indoor unit detected)
When this warning was detected before group construction/address check finish at power supply was turned on, the mode shifts automatically to AUTO address setup mode.
(Remote controller detected)
(Central control devices detected)
Check code indication
Central control device &
Wired remote controller
E03
E04
E08
E11
E18
F01
F02
F10
F29
L03
L07
L08
L09
L20
L30
P01
P10
P12
P19
P31
Lamp indication
Block indication
Operation
Timer Ready Flash
ALT
ALT
ALT
SIM
SIM
SIM
SIM
SIM
SIM
SIM
ALT
ALT
ALT
ALT
ALT
Representative trouble position
Regular communication trouble between indoor and
remote controller
Indoor/Outdoor serial trouble
Duplicated indoor addresses
Communication trouble between Application control kit and indoor unit
Regular communication trouble between
indoor header and follower units
Indoor unit, Heat exchanger (TCJ) trouble
Indoor unit, Heat exchanger (TC) trouble
Indoor unit, Room temp. sensor (TA) trouble
Indoor unit, other indoor P.C. board trouble
Duplicated setting of indoor group header unit
There are group cable in individual indoor unit.
Unset indoor group address
Unset indoor capacity
Duplicated central control system address
Outside trouble input to indoor unit (Interlock)
Indoor unit, AC fan trouble
Indoor unit, overflow detection
Indoor unit, DC fan trouble
4-way valve system trouble
Other indoor unit trouble
Explanation of trouble contents
No communication from remote controller and network adapter
(Also no communication from central control system)
There is trouble on serial communication between indoor and outdoor units
Same address as yours was detected.
Communication trouble between Application control kit and indoor unit P.C. board
Regular communication between indoor header and follower units is impossible,
Communication between twin header (master) and follower (sub) units is impossible.
Open/short-circuit was detected on heat exchanger (TCJ).
Open/short-circuit was detected on heat exchanger (TC).
Open/short-circuit was detected on room temp. sensor (TA).
EEPROM trouble (Other trouble may be detected. If no trouble, automatic address is repeated.
There are multiple header units in a group.
When even one group connection indoor unit exists in individual indoor unit.
Indoor group address is unset.
Capacity of indoor unit is unset.
Duplicated setting of central control system address
Abnormal stop by outside trouble CN80/TB2 (IN1) input
An trouble of indoor AC fan was detected. (Fan motor thermal relay worked.)
Float switch worked.
Indoor DC fan trouble (Over-current/Lock, etc.) was detected.
In heating operation, a trouble was detected by temp. down of indoor heat exchanger sensor.
Follower unit in group cannot operate by warning from [E03/L03/L07/L08] of header unit.
Air conditioner operation
Automatic Operation
reset
continuation
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F30 ALT Occupancy sensor trouble Occupancy sensor trouble has been detected.
Check code indication
Wired remote controller
E01
E02
E09
Lamp indication
Block indication
Operation
Timer Ready Flash
Representative trouble position
No master remote controller, Remote controller
communication (Receive) trouble
Remote controller communication (Send) trouble
Duplicated master remote controller
Explanation of trouble contents
Signal cannot be received from indoor unit. Master remote controller was not set.
(including 2 remote controllers)
Signal cannot be sent to indoor unit.
In 2-remote controller control, both were set as master. (Indoor master unit stops warning
and follower unit continues operation.)
Air conditioner operation
Automatic Operation
reset
continuation
Check code indication
Central control device
C05
C06
C12
P30
Lamp indication
Block indication
Operation
Timer Ready Flash
Is not displayed.
(Common use of wired
remote controller, etc.)
—
By warning unit
(Above-mentioned)
Representative trouble position
Central control system communication (send) trouble
Central control system communication (receive) trouble
General-purpose device control interface batched warning
Group follower unit is trouble.
Explanation of trouble contents
Signal sending operation of central control system is impossible.
There are multiple same central devices. (Link adapter)
Signal receiving operation of central control system is impossible.
An trouble on device connected to general-purpose device control interface of exclusive to
Link adapter
Group follower unit is trouble.
(For remote controller, above-mentioned [*** ] details are displayed with unit No.
Air conditioner operation
Automatic Operation
reset
continuation
NOTE: Even for the same contents of trouble such as communication trouble, the display of check code may differ according to detection device.
When wired remote controller or central controller detects an trouble, it is not necessarily related to operation of the air conditioner. In this list, the check codes that outdoor unit detects are not described.
: It is based on a situation.
7-2-3. Check Code List (Indoor)
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