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1. Contents of Remote Controller Switch Alarm Display
W-2WAY ECO-i SYSTEM
Trouble Diagnosis
ON: Blinking: OFF:
Possible cause of malfunction
Wired
remote
control
display
Wireless
remote controller
receiver display
Operation
Timer
Standby
for heating
Serial
communication
errors
Mis-setting
Remote controller is detecting
error signal from indoor unit.
Error in receiving serial communication signal. (Signal from
main indoor unit in case of group control) Outdoor system
address, indoor unit address, or indoor unit address
independent/main/sub unit setting has not been made.
(Auto address is not completed.)
<E01>
Error in transmitting serial communication signal.
<E02>
Indoor unit is detecting error signal from remote controller and system controller.
<<E03>>
Indoor unit is detecting error
signal from outdoor unit.
Error in receiving serial communication signal.
When turning on the power supply, the number of
connected indoor units does not correspond to the number
set. (Except R.C. address is “0.”)
Group wiring failure of indoor units in the refrigerant system
(occurring when remote controller is operated immediately
after automatic address setting)
•
•
•
E04
Outdoor unit is detecting error
signal from indoor unit.
Error in receiving serial communication signal.
There is an indoor unit which does not send signals when
the power is ON.
•
• E06
Improper setting Indoor unit address setting is duplicated.
• <<E08>>
Duplicated remote controller “main” setting.• <<E09>>
Improper setting Automatic address setting start is prohibited.
AP pin was short-circuited at time when automatic address
setting was started.
E12
Indoor unit communication
error of group control wiring.
Error of main indoor unit in receiving serial communication
signal from sub indoor units.
E18
During auto. address setting,
number of connected units
does not correspond to number
set.
Number of connected indoor units is less than the number set. E15
Number of connected indoor units is more than the number set.
E16
No indoor unit is connected during auto. address setting.
E20
Main outdoor unit is detecting error signal from sub outdoor unit.
E24
Duplicated outdoor unit address.
E25
Mismatch in “No. of outdoor units” setting.
E26
Error of sub outdoor unit in receiving serial communication
signal from main outdoor unit.
E29
Improper setting Connected indoor unit is not a multi unit.
<<L02>>
Duplication of main indoor unit address setting in group control.
<L03>
Duplicated indoor unit priority (priority indoor unit).
L05
Duplicated indoor unit priority (non-priority indoor unit) and
outdoor unit.
L06
Group control wiring is connected to individual control indoor unit.
L07
Indoor unit address is not set.
L08
Capacity code of indoor unit is not set.
<<L09>>
Mismatch of outdoor unit type.
L17
Duplication of outdoor R.C. address setting. L04
Capacity code of outdoor unit is not set.
L10
4-way valve operation failure
L18
Thermistor
fault
Indoor unit Indoor coil temp. sensor (E1) <<F01>>
Indoor coil temp. sensor (E3) <<F03>>
Indoor suction air (room) temp. sensor
<<F10>>
Indoor discharge air temp. sensor
<<F11>>
Thermistor fault Outdoor unit
Compressor 1 (INV) discharge temp. sensor
F04
Compressor 2 (constant speed) discharge temp. sensor
F05
Outdoor air temp. sensor
F08
Heat exchanger 1 liquid temp. sensor
F07
Heat exchanger 1 gas temp. sensor
F06
Continued
Operating lamp
blinking
Heating ready lamp
blinking
Operating lamp
blinking
Heating ready lamp
blinking
Operating and heating
ready lamps blinking
simultaneously
Operating and heating
ready lamps blinking
simultaneously
Operating and
timer lamps blinking
alternately
Operating and timer
lamps blinking
altemately