� 24 �
47-EN
48-EN
Error codes and parts to be checked
Wired
remote
controller
display
Wireless remote controller
Sensor block display of
receiving unit
Main defective parts
Judging
device
Parts to be checked / error description
Air
conditioner
status
Indication
Operation Timer
Ready
GR GR OR
Flashing
E01
No header remote
controller
Remote
controller
Incorrect remote controller setting --- The header
remote controller has not been set (including two
remote controllers).
*
Remote controller
communication error
No signal can be received from the indoor unit.
E02
Remote controller
transmission error
Remote
controller
System interconnection wires, indoor P.C. board,
remote controller --- No signal can be sent to the
indoor unit.
*
E03
Indoor unit-remote
controller regular
communication error
Indoor
Remote controller, network adapter, indoor
P.C. board --- No data is received from the remote
controller or network adapter.
Auto-reset
E04
Indoor unit-outdoor unit
serial communication
error
Indoor
System interconnection wires, indoor P.C. board,
outdoor P.C. board --- Serial communication error
between indoor unit and outdoor unit
Auto-reset
IPDU-CDB
communication error
E08
Duplicated indoor
addresses
Indoor
Indoor address setting error --- The same address
as the self-address was detected.
Auto-reset
E09
Duplicated header
remote controllers
Remote
controller
Remote controller address setting error --- Two
remote controllers are set as header in the
double remote controller control.
*
(* The header indoor unit stops raising alarm and
follower indoor units continue to operate.)
E10
CPU-CPU
communication error
Indoor
Indoor P.C. board --- Communication error between
main MCU and motor microcomputer MCU
Auto-reset
E18
Header unit
follower unit regular
communication error
Indoor
Indoor P.C. board --- Regular communication is
not possible between header and follower indoor
units or between twin header (main) and follower
(sub) units.
Auto-reset
E31
IPDU communication
error
Outdoor
Communication error between IPDU and CDB
Entire stop
F01
ALT
Indoor unit heat
exchanger sensor
(TCJ) error
Indoor
Heat exchanger sensor (TCJ), indoor P.C. board ---
Open-circuit or short-circuit of the heat exchanger
sensor (TCJ) was detected.
Auto-reset
F02
ALT
Indoor unit heat
exchanger sensor (TC)
error
Indoor
Heat exchanger sensor (TC), indoor P.C. board ---
Open-circuit or short-circuit of the heat exchanger
sensor (TC) was detected.
Auto-reset
F04
ALT
Outdoor unit discharge
temp. sensor (TD) error Outdoor
Outdoor temp. sensor (TD), outdoor P.C. board ---
Open-circuit or short-circuit of the discharge temp.
sensor was detected.
Entire stop
F06
ALT
Outdoor unit temp.
sensor (TE/TS) error
Outdoor
Outdoor temp. sensors (TE/TS), outdoor P.C. board
--- Open-circuit or short-circuit of the heat
exchanger temp. sensor was detected.
Entire stop
F07
ALT
TL sensor error
Outdoor
TL sensor may be displaced, disconnected or
short-circuited.
Entire stop
F08
ALT
Outdoor unit outside air
temp. sensor error
Outdoor
Outdoor temp. sensor (TO), outdoor P.C. board ---
Open-circuit or short-circuit of the outdoor air temp.
sensor was detected.
Operation
continued
F10
ALT
Indoor unit room temp.
sensor (TA) error
Indoor
Room temp. sensor (TA), indoor P.C. board ---
Open-circuit or short-circuit of the room temp.
sensor (TA) was detected.
Auto-reset
Wired
remote
controller
display
Wireless remote controller
Sensor block display of
receiving unit
Main defective parts
Judging
device
Parts to be checked / error description
Air
conditioner
status
Indication
Operation Timer
Ready
GR GR OR
Flashing
F12
ALT
TS sensor error
Outdoor
TS sensor may be displaced, disconnected or
short-circuited.
Entire stop
F13
ALT
Heat sink sensor error
Outdoor
Abnormal temperature was detected by the temp.
sensor of the IGBT heat sink.
Entire stop
F15
ALT
Temp. sensor
connection error
Outdoor
Temp. sensor (TE/TS) may be connected
incorrectly.
Entire stop
F29
SIM
Indoor unit, other
P.C. board error
Indoor
Indoor P.C. board --- EEPROM error
Auto-reset
F31
SIM
Outdoor unit P.C. board Outdoor
Outdoor P.C. board ---- In the case of EEPROM
error.
Entire stop
H01
Outdoor unit
compressor
breakdown
Outdoor
Current detect circuit, power voltage --- Minimum
frequency was reached in the current releasing
control or short-circuit current (Idc) after direct
excitation was detected
Entire stop
H02
Outdoor unit
compressor lock
Outdoor
Compressor circuit --- Compressor lock was
detected.
Entire stop
H03
Outdoor unit current
detect circuit error
Outdoor
Current detect circuit, outdoor unit P.C. board ---
Abnormal current was detected in AC-CT or a
phase loss was detected.
Entire stop
H04
Case thermostat
operation (1)
Outdoor
Malfunction of the case thermostat
Entire stop
H06
Outdoor unit
low-pressure system
error
Outdoor
Current, high-pressure switch circuit, outdoor P.C.
board --- Pressure sensor error was detected or
low-pressure protective operation was activated.
Entire stop
L03
SIM
Duplicated header
indoor units
Indoor
Indoor address setting error --- There are two or
more header units in the group.
Entire stop
L07
SIM
Group line in individual
indoor unit
Indoor
Indoor address setting error --- There is at least
one group-connected indoor unit among individual
indoor units.
Entire stop
L08
SIM
Indoor group address
not set
Indoor
Indoor address setting error --- Indoor address
group has not been set.
Entire stop
L09
SIM
Indoor unit capacity
not set
Indoor
Indoor unit capacity has not been set.
Entire stop
L10
SIM
Outdoor unit P.C. board Outdoor
In the case of outdoor P.C. board jumper wire
(for service) setting error
Entire stop
L20
SIM
LAN communication
error
Network
adapter
central
control
Address setting, central control remote controller,
network adapter --- Duplication of address in
central control communication
Auto-reset
L29
SIM
Other outdoor unit
error
Outdoor
Other outdoor unit error
Entire stop
1) Communication error between IPDU MCU and
CDB MCU
Entire stop
2) Abnormal temperature was detected by the heat
sink temp. sensor in IGBT.
L30
SIM
Abnormal external
input into indoor unit
(interlock)
Indoor
External devices, outdoor unit P.C. board ---
Abnormal stop due to incorrect external input into
CN80
Entire stop
L31
SIM
Phase sequence
error, etc.
Outdoor
Power supply phase sequence, outdoor unit P.C.
board --- Abnormal phase sequence of the 3-phase
power supply
Operation
continued
(thermost
at OFF)
EN
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