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• • Contents of alarm display on remote controller
For the remote controller, there are other alarm contents listed on the following table besides the alarm display on outdoor main unit
control P.C. board.
Wired remote
control display
<E01>
Remote controller detects abnormal signal transmitted
from the indoor unit.
<E02>
<<E03>>
Indoor unit failed to receive serial signal by remote controller (or central controller).
Indoor unit detects abnormal signal from outdoor main unit
E04
control P.C. board.
E08
Setting failure
<<E09>>
E18
Indoor unit communication error in group control wiring
<<L02>>
<L03>
Setting failure
L07
L08
<<L09>>
<<F01>>
<<F03>>
Indoor unit thermistor failure
<<F10>>
<<F11>>
<<P09>>
Connection failure of ceiling panel or connector
<<P01>>
<<P10>>
Indoor unit protection
<<P11>>
<<P12>>
F29
Nonvolatile memory IC (EEPROM) failure on indoor unit control P.C. board
• • The parentheses of << >> used in the table of alarm display does not affect anything the operation of other indoor units.
• • The parentheses of < > used in the table of alarm display implies that there are two cases : according to the content of the symptom,
some affect the operation of other indoor units and others do not affect anything.
Alarm messages displayed on system controller
Error in transmitting serial
communication signal
Serial
communication
errors
Error in receiving serial
Mis-setting
communication signal
Activation of
Protective device of sub
protective
indoor unit in group control is
device
activated.
NOTE
1. Alarm messages in << >> do not affect other indoor unit operations.
2. Alarm messages in < > sometimes affect other indoor unit operations depending on the fault.
Detected contents
Indoor or main outdoor unit is not operating correctly.
Mis-wiring of control wiring between indoor unit, main outdoor unit and
system controller.
Indoor or main outdoor unit is not operating correctly.
Mis-wiring of control wiring between indoor unit, main outdoor unit and
system controller.
CN1 is not connected properly.
When using wireless remote controller or system controller, in order to
check the alarm message in detail, connect wired remote controller to
indoor unit temporarily.
60
• • Failure of remote controller to receive.
(For group control, signal from the main unit.)
• • No setting of system address, indoor unit address,
indoor unit individualization / main / sub
(Auto address setting not completed.)
Remote controller not connected properly.
• • Receiving failure of remote controller
(For group control, signal from the main unit.)
• • Inconsistencies in number of connected units and setting
units when outdoor unit is turned ON power.
(Excepting the system address "0")
Indoor unit address settings duplicated
Main remote control settings duplicated
Main indoor unit failed to receive serial signal from sub
indoor unit.
Indoor unit connected to multiple outdoor units is not for
multiple type.
Main unit settings duplicated in group control indoor units
Group control wiring connected to individual control indoor
unit
Indoor unit address settings not made
Indoor unit capacity settings not made
Heat exchanger temperature sensor E1
Heat exchanger temperature sensor E3
Inlet temperature sensor
Outlet temperature sensor
Fan protection thermostat
Float switch
Faulty drain pump. Drain pump locked.
Actuation of fan invertor protecting function
C05
C06
P30
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