� 26 �
51-EN
52-EN
11
Troubleshooting
Confirmation and check
When an error has occurred in the air conditioner,
the check code and the unit number of the indoor
unit appear on the display of the remote control.
* The check code appears only while the unit is
running.
Push the [
MONITOR] button or [
CANCEL]
button to display the check information screen.
While the check information screen appears:
Push the “
Contact” [ F1] button to
display the contact number for service.
Push the “
Information” [ F2] button
to display the model name and serial number of
the unit.
Unit number of the
malfunctioning
indoor unit
Check code
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
EN
1115350171_EN,FR,ES.indd 27
19/3/2565 9:38:47
