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