SMMS High-Wall Type
Installation Manual
– 27 –
Check method
On the remote controller (Wired remote controller, Central control remote controller) and the interface P.C.
board of the outdoor unit (I/F), a check display LCD (Remote controller) or 7-segment display (on the
outdoor interface P.C. board) to display the operation is provided. Therefore the operation status can be
known. Using this self-diagnosis function, a trouble or position with error 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.
• In case of check from indoor remote controller: See “Wired remote controller display” in the list.
• In case of check from outdoor unit: See “Outdoor 7-segment display” in the list.
• In case of check from indoor unit with wireless remote controller: See “Sensor block display of receiving
unit” in the list.
AI-NET: Artificial Intelligence.
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 controller
Check code name
Judging
device
Wired
remote
controller
display
Outdoor 7-segment display
Sensor block display of
receiving unit
Auxiliary code
OPERATION TIMER PRE.DEF. Flash
E01
—
—
Communication error between indoor
and remote controller
(Detected at remote controller side)
Remote
controller
E02
—
—
Remote controller transmission error
Remote
controller
E03
—
—
Communication error between indoor
and remote controller (Detected at
indoor side)
Indoor
E04
—
—
Communication circuit error 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 error between
indoor/outdoor (Detected at outdoor
side)
I/F
E08
E08 Duplicated indoor addresses
Duplicated indoor addresses
Indoor / I/F
E09
—
—
Duplicated main remote controllers
Remote
controller
E10
—
—
Communication error between indoor
MCU
Indoor
E12
E12
01: Indoor/Outdoor
communication
02: Communication between
outdoor units
Automatic address start error
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
I/F
E18
—
—
Communication error between indoor
units
Indoor
E19
E19
00: Header is nothing
02: Two or more header units
Outdoor header units quantity error
I/F
E20
E20
01: Outdoor of other line
connected
02: Indoor of other line
connected
Other line connected during automatic
address
I/F
27-EN
