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33
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¥
: Flash,
¡
: Go on,
l
: Go off
Diagnostic function
Wireless sensor
lamp display
Wired remote
controller
Operation
Timer
Ready
Check code
Cause of operation
Status of air
conditioner
Condition
Judgment and measures
—
—
—
No check code
is displayed.
(Remote
controller does
not operate.)
No communication with master indoor unit
• Remote controller wire is not correctly connected.
• Power of indoor unit is not turned on.
• Automatic address cannot be completed.
Stop
—
Remote controller power error, Defective indoor EEPROM
1. Check remote controller inter-unit wires.
2. Check remote controller.
3. Check indoor power wires.
4. Check indoor P.C. board.
5. Check indoor EEPROM. (including socket insertion)
: Phenomenon of automatic address repetition occurred.
¥
l
l
E01*2
No communication with indoor master unit
• Disconnection of inter-unit wire between remote controller and
master indoor unit (Detected at remote controller side)
Stop
(Automatic restart)
• When there is center,
operation continues.
Displayed when
error is detected
Signal receiving of remote controller is defective.
1. Check remote controller inter-unit wires.
2. Check remote controller.
3. Check indoor power wires.
4. Check indoor P.C. board.
¥
l
l
E02
Signal sending error to indoor unit
(Detected at remote controller side)
Stop
(Automatic restart)
• When there is center,
operation continues.
Displayed when
error is detected
Signal sending of remote controller is defective.
1. Check sending circuit inside of remote controller.
: Replace remote controller.
¥
l
l
E09
Multiple master remote controllers are recognized.
(Detected at remote controller side)
Stop
(Sub unit continues
operation.)
Displayed when
error is detected
1. Check there are multiple master units for 2 remote controllers
(including wireless).
: Master unit is one and others are sub units.
L20
¥
¡
¥
Central
remote controller
98
Duplicated indoor central addresses on communication of central
control system (AI-NET)
(Detected by central controller side)
Stop
(Automatic restart)
Displayed when
error is detected
1. Check address setup of central control system network.
(Network adapter SW01)
2. Check network adapter P.C. board.
—
*3
—
—
—
Central
remote controller
99
Multiple network adapters on remote controller communication line
(Detected by central controller side)
Operation continues.
Displayed when
error is detected
1. Check multiple network adapters.
2. Check inter-unit wire/miswiring of remote controller.
: Only one network adapter on remote controller communication line
—
*3
—
—
—
Central
remote controller
97
Interruption of central control system (AI-NET) communication circuit
(Detected by central controller side)
Operation continues.
(According to handy
remote controller)
Displayed when
error is detected
1. Check communication line/miswiring. Check power of indoor unit.
2. Check communication. (XY terminals)
3. Check network adapter P.C. board.
4. Check central controller (such as central control remote controller, etc.).
—
—
—
—
Central
remote controller
b7
Indoor Gr sub unit error (Detected by central controller side)
Continuation/stop
(Based on a case)
Displayed when
error is detected
Check the check code of corresponding unit by handy remote controller.
*2 Check code is not displayed by wired remote controller. (Usual operation of air conditioner is disabled.)
For wireless type models, E01 is notified by the display lamp.
*3 These errors are related to communication of remote controllers (A, B) and central system (AI-NET, X, Y), and [E01], [E02], [E03], [E09], or [E18] is displayed or no check code is displayed on the remote controller
according to the error contents.
Error mode detected by remote controller or network adapter
