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4-2
4. Service procedures
Remote controller is
detecting error signal from
indoor unit
E01
E02
E10
E11
E14
E03
E08
E09
E04
E05
E06
E07
E15
E12
E16
E20
E17
E18
E31
L01
L02
L03
L04
L07
L08
L09
L10
L11
L13
Indoor unit is detecting error signal from remote controller (and system controller)
Error in receiving serial communication signal
(Signal from main indoor unit in case of
group control)
Auto address is not completed
Outdoor system address, indoor system address, or indoor unit
individual/main/sub setting is not set
(Automatic address setting is not completed)
Error in transmitting serial communication signal
Improper setting of indoor
unit or remote controller
Indoor unit address setting is duplicated
Remote controller setting is duplicated
Error in transmitting serial communications signal
Error in transmitting serial communications signal
Error in receiving serial communications signal
Error in receiving serial communications signal
Indoor unit is detecting error
signaled from signal option
Setting error
Main unit duplication in simultaneous-operation multi control
(detected by outdoor unit)
Indoor unit is detecting 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
Setting errorMis-setting
Continued
Error in transmitting serial communications signal
I
Starting auto address setting is prohibited
This alarm message shows that the auto address connector
CN100 is shorted while other RC line is executing auto address
operation.
ndoor unit capacity too low
Indoor unit capacity too high
No indoor units connected
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)
Error in transmitting serial communications signal
Error in receiving serial communications signal (including unit
quantity verification failure)
Simultaneously
Simultaneously
Simultaneously
Simultaneously
Serial commu-
nication errors
Mis-setting
Wired
remote
control
display
Wireless
remote controller
receiver display
ON:
Operation
Timer
S
tandb
y
Blinking: OFF:
Possible cause of malfunction
4-1. Meaning of Alarm Messages
(1) Contents of remote controller switch alarm display
4