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Check codes and parts to be checked
Check method
On the remote control (Wired remote control, Central control remote control) and the interface P.C. board of the
outdoor unit (I/F), a check display LCD (Remote control) or 7-segment display (on the outdoor interface P.C. board)
to display the operation is provided. Therefore the operation status can be known. With this self-diagnosis function,
a trouble or position with trouble of the air conditioner can be found as shown in the table below.
Check code list
The following list shows each check code. Find the check contents from the list according to part to be checked.
• To check from indoor remote control: See “Wired remote control display” in the list.
• To check from outdoor unit: See “Outdoor 7-segment display” in the list.
• To check from indoor unit with a wireless remote control: See “Sensor block display of receiving unit” in the list.
IPDU : Intelligent Power Drive Unit
: Lighting,
: Flashing,
: Goes off
ALT : Flashing is alternately when there are two flashing LED.
SIM : Simultaneous flashing when there are two flashing LED.
Check code
Wireless remote control
Check code name
Judging
device
Wired remote
control display
Outdoor 7-segment display
Sensor block display of
receiving unit
Auxiliary code
Operation Timer Ready Flash
E01
—
—
Communication trouble between indoor
and remote control
(Detected at remote control side)
Remote
control
E02
—
—
Remote control transmission trouble
Remote
control
E03
—
—
Communication trouble between indoor
and remote control (Detected at indoor
side)
Indoor
E04
—
—
Communication circuit trouble between
indoor / outdoor (Detected at indoor
side)
Indoor
E06
E06 No. of indoor units in which sensor has been normally
received
Decrease of No. of indoor units
I/F
—
E07
—
Communication circuit trouble between
indoor / outdoor (Detected at outdoor
side)
I/F
E08
E08 Duplicated indoor addresses
Duplicated indoor addresses
Indoor / I/F
E09
—
—
Duplicated header remote controls
Remote
control
E10
—
—
Communication trouble between indoor
MCU
Indoor
E12
E12 01: Indoor / Outdoor communication
02: Communication between outdoor units
Automatic address start trouble
I/F
E15
E15
—
Indoor is nothing during automatic
addressing
I/F
E16
E16 00: Capacity over
01 ~:No. of connected units
Capacity over / No. of connected indoor units
Combined capacity of indoor units
exceeds 120% of combined capacity of
outdoor units. (SMMS-i only)
I/F
E18
—
—
Communication trouble between indoor units
Indoor
E19
E19 00: Header is nothing
02: Two or more header units
Outdoor header units quantity trouble
I/F
E20
E20 01: Outdoor of other line connected
02: Indoor of other line connected
Other line connected during automatic
address
I/F
E23
E23
—
Sending trouble in communication
between outdoor units
I/F
E25
E25
—
Duplicated follower outdoor addresses
I/F
E26
E26 No. of outdoor units which received signal normally
Decrease of No. of connected outdoor units
I/F
E28
E28 Detected outdoor unit number
Follower outdoor unit trouble
I/F
E31
E31
IPDU communication trouble
I/F
F01
—
—
ALT Indoor TCJ sensor trouble
Indoor
F02
—
—
ALT Indoor TC2 sensor trouble
Indoor
F03
—
—
ALT Indoor TC1 sensor trouble
Indoor
F04
F04
—
ALT TD1 sensor trouble
I/F
F05
F05
—
ALT TD2 sensor trouble
I/F
F06
F06 TE1 sensor
TE2 sensor
ALT TE1 sensor trouble
TE2 sensor trouble
I/F
F07
F07
—
ALT TL sensor trouble
I/F
F08
F08
—
ALT TO sensor trouble
I/F
F09
F09 01: TG1
02: TG2
TG1 sensor trouble
TG2 sensor trouble
I/F
F10
—
—
ALT Indoor TA sensor trouble
Indoor
F11
— TF sensor
ALT TF sensor trouble
Indoor
F12
F12 01: TS1 sensor
03: TS3 sensor
ALT TS1 sensor trouble, TS3 sensor trouble
I/F
F13
F13
01: Comp. 1 side
02: Comp. 2 side
03: Comp. 3 side
ALT TH sensor trouble
IPDU
F15
F15
—
ALT Outdoor temp. sensor miswiring (TE1, TL)
I/F
F16
F16
—
ALT Outdoor pressure sensor miswiring (Pd, Ps)
I/F
F22
F22
—
ALT TD3 trouble
I/F
F23
F23
—
ALT Ps sensor trouble
I/F
F24
F24
—
ALT Pd sensor trouble
I/F
F29
—
—
SIM Indoor other trouble
Indoor
F31
F31
—
SIM Indoor EEPROM trouble
I/F
H01
H01
01: Comp. 1 side
02: Comp. 2 side
03: Comp. 3 side
Compressor break down
IPDU
H02
H02
01: Comp. 1 side
02: Comp. 2 side
03: Comp. 3 side
Compressor trouble (lock)
IPDU
H03
H03
01: Comp. 1 side
02: Comp. 2 side
03: Comp. 3 side
Current detect circuit system trouble
IPDU
H05
H05
—
TD1 miswiring
I/F
H06
H06
—
Low pressure protective operation
I/F
H07
H07
—
Oil level down detective protection
I/F
Check code
Wireless remote control
Check code name
Judging
device
Wired remote
control display
Outdoor 7-segment display
Sensor block display of
receiving unit
Auxiliary code
Operation Timer Ready Flash
Sub-
code
A3-IPDU
Fan-
IPDU Sub-
code
A3-IPDU Fan-
IPDU
1 2 3 1 2
1 2 3 1 2
01
0D
02
0E
03
0F
04
11
05
12
06
13
07
18
08
19
09
1A
0A
1B
0B
Circle (
): IPDU trouble
0C
33-EN
34-EN
+00EHEH99887601.book Page 17 Thursday, April 21, 2016 9:44 AM