Service Manual

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Error mode detected by remote controller
Error mode detected by central remote controller
¥
: Flash,
¡
: Go on,
l
: Go off
¥
: Flash,
¡
: Go on,
l
: Go off
Wireless sensor
lamp display
Operation Timer Ready
———
———
———
Wired remote controller
Check code
C05
C06
P30
Diagnostic function
Cause of operation
Sending error central remote controller
Receiving error in central remote controller
Differs according to error contents of unit with
occurrence of alarm.
Status of
air conditioner
Operation continues
Operation continues
Continuation/Stop
(Based on a case)
Condition
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Judgment and measures
1. Check communication line/miscabling/ Check power of indoor unit.
2. Check communication. (U3, U4 terminals)
3. Check network adapter P.C. board.
4. Check central controller
(such as central control remote controller, etc.).
5. Terminal resistance check (connection interface SW01)
Check the check code of corresponding unit by remote controller
Wireless sensor
lamp display
Operation Timer Ready
———
¥
ll
¥
ll
¥
ll
¥¡¥
Wired remote controller
Check code
No check code is displayed.
(Remote controller does
not operate.)
E01*2
E02
E09
L20
Diagnostic function
Cause of operation
No communication with master indoor unit
• Remote controller cable is not correctly
connected.
• Power of indoor unit is not turned on.
• Automatic address cannot be completed.
No communication with indoor master unit
• Disconnection of inter-unit cable between remote
controller and master indoor unit
(Detected at remote controller side)
Signal sending error to indoor unit
(Detected at remote controller side)
Multiple master remote controllers are recognized.
(Detected at remote controller side)
Duplicated indoor central addresses on
communication of central control system
(Detected by central controller side)
Status of
air conditioner
Stop
Stop
(Automatic restart)
* When there is center,
operation continues
Stop
(Automatic restart)
* When there is center,
operation continues.
Stop
(Sub unit continues operation.)
Stop
(Automatic restart)
Condition
—
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Displayed when
error is detected
Judgment and measures
Remote controller power error, Defective indoor EEPROM
1. Check remote controller inter-unit cables.
2. Check remote controller.
3. Check indoor power cables.
4. Check indoor P.C. board.
5. Check indoor EEPROM. (including socket insertion)
: Phenomenon of automatic address repetition occurred.
Signal receiving of remote controller is defective.
1. Check remote controller inter-unit cables.
2. Check remote controller.
3. Check indoor power cables.
4. Check indoor P.C. board.
Signal sending of remote controller is defective.
1. Check sending circuit inside of remote controller.
: Replace remote controller.
1. Check there are multiple master units for 2 remote controllers
(including wireless).
: Master unit is one and others are sub units.
1. Check address setup of central control system network. (DN = 03)
*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.