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Concealed Duct Type
Installation Manual
Concealed Duct Type
Installation Manual
11
Troubleshooting
Confirmation and check
When an error occurred in the air conditioner, an error
code and indoor UNIT No. appear on the display part
of the remote controller.
The error code is only displayed during the operation.
If the display disappears, operate the air conditioner
according to the following “Confirmation of error log” for
confirmation.
Confirmation of error log
When an error occurred on the air conditioner, the error
log can be confirmed with the following procedure.
(The error log is stored in memory up to 4 errors.)
The log can be confirmed from both operating status
and stop status.
1
When
and
buttons are pushed
simultaneously for 4 seconds or more, the
following display appears.
If
is displayed, the mode enters in the error log
mode.
• [
01
: Order of error log] is displayed in CODE
No..
• [Error code] is displayed in CHECK.
• [Indoor unit address in which an error occurred]
is displayed in Unit No..
2
Every pushing of
button used to set
temperature, the error log stored in memory
is displayed in order.
The numbers in CODE No. indicate CODE No.
[
01
] (latest)
→
[
04
] (oldest).
REQUIREMENT
Do not push
button because all the error log of the
indoor unit will be deleted.
3
After confirmation, push
button to return
to the usual display.
Error code
Indoor UNIT No. in
which an error occurred
3
2
1
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
Indoor/outdoor connecting 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
Indoor/outdoor connecting 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
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
37-EN
38-EN
+00EH99878599_01EN.book Page 19 Saturday, April 2, 2011 4:13 PM
