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5-1. Meaning of Alarm Messages
1. Contents of the alarm display on the remote controller
Serial commu-
Remote controller is
nication errors
detecting error signal from
Mis-setting
indoor unit
Indoor unit is detecting error signal from remote controller (and system controller)
Setting error
Indoor unit is detecting
error signaled from signal
option
Setting error
Indoor unit is detecting
5
error signaled from outdoor
unit
Outdoor unit is detecting
error signaled from indoor
unit
Automatic address setting
failed
An indoor unit detected
trouble in the signal from
another indoor unit
Communications trouble
between units
Mis-setting
Setting error
Possible cause of malfunction
• Error in receiving serial communication signal
(Signal from main indoor unit in case of group control)
• Outdoor system address, indoor system address, or indoor
unit individual/main/sub setting is not set (Automatic address
setting is not completed).
• Auto address is not completed.
Error in transmitting serial communication signal
Indoor unit address setting is duplicated.
Remote controller setting is duplicated.
Communications error between the DC fan and the driver.
Error in receiving serial communications signal
Main unit duplication in simultaneous-operation multi control
(detected by outdoor unit)
• Error in receiving serial communications signal
• In case the power source wire is disconnected, the error may
sometimes occur.
Error in transmitting serial communications signal
Error in receiving serial communications signal (including unit
quantity verifi cation failure)
Error in transmitting serial communications signal
Indoor unit capacity too low
Indoor unit capacity too high
No indoor units connected
Error in transmitting serial communications signal
Error in receiving serial communications signal
Communications failure with MDC
Indoor unit group settings error
Indoor/outdoor unit type mismatch
Main unit duplication in group control (detected by indoor unit)
Outdoor unit address duplication (system address)
Group wiring connected for independent indoor unit
Address not set or group not set
Indoor unit capacity not set
Outdoor unit capacity not set or setting error
Miswiring in group control wiring
Indoor unit type setting error (capacity)
5-2
ON:
Blinking:
OFF:
Wireless
remote
controller
Lamp display
Display
E01
E02
E03
E08
E09
E10
E11
E14
E04
E05
E06
E07
E15
E16
E20
E17
E18
E31
L01
L02
L03
Simultaneously
L04
Simultaneously
L07
L08
L09
Simultaneously
L10
L11
L13
Simultaneously
Continued
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