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Under Ceiling Type
Installation Manual
EN
Toshiba
Check codes and parts to be checked
Wired
remote
control
display
Wireless remote control
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
control
Remote
control
Incorrect remote control setting --- The header remote
control has not been set (including two remote controls).
*
Remote control
communication error
No signal can be received from the indoor unit.
E02
Remote control
transmission error
Remote
control
System interconnection wires, indoor P.C. board, remote
control
--- No signal can be sent to the indoor unit.
*
E03
Indoor unit-remote
control regular
communication error
Indoor
Remote control, network adapter, indoor P.C. board ---
No data is received from the remote control 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 controls
Remote
control
Remote control address setting error --- Two remote
controls are set as header in the double-remote control
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 indoor unit-
indoor 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
(F06)
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
(F06)
ALT TS sensor error Outdoor
TS sensor may be displaced, disconnected or short-
circuited.
Entire stop
F13
(L29)
ALT Heat sink sensor error Outdoor
Abnormal temperature was detected by the temp. sensor
of the IGBT heat sink.
Entire stop
F15
(F06)
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
30-EN
+00EH99864801_00Ta.book Page 30 Tuesday, November 24, 2009 5:40 PM