169
List of Check Codes (Outdoor Unit)
(Errors detected by SMMS-i outdoor interface - typical examples)
Check code
Display of receiving unit
Typical fault site
Description of error
Outdoor 7-segment display
TCC-LINK
central control
or main remote
controller
display
Indicator light block
Sub-code
Flash
E06
Number of indoor units from which
signal is received normally
E06
Dropping out of indoor unit
Indoor unit initially communicating normally fails to
return signal (reduction in number of indoor units
connected).
E07
–
(E04)
Indoor-outdoor
communication circuit
error
Signal cannot be transmitted to indoor units
(
➝
indoor units left without communication from
outdoor unit).
E08 Duplicated indoor address
(E08)
Duplicated indoor address
More than one indoor unit is assigned same
address (also detected at indoor unit end).
E12
01: Indoor-outdoor communication
02: Outdoor-outdoor
communication
E12
Automatic address starting
error
• Indoor automatic address setting is started while
automatic address setting for equipment in other
refrigerant line is in progress.
• Outdoor automatic address setting is started
while automatic address setting for indoor units
is in progress.
E15
–
E15
Indoor unit not found
during automatic address
setting
Indoor unit fails to communicate while automatic
address setting for indoor units is in progress.
E16
00: Overloading
01: Number of units connected
E16
Too many indoor units
connected/overloading
Combined capacity of indoor units is too large
(more than 135% of combined capacity of outdoor
units).
E19
00: No header unit
02: Two or more header units
E19
Error in number of outdoor
header units
There is no or more than one outdoor header unit
in one refrigerant line.
E20
01: Connection of outdoor unit from
other refrigerant line
02: Connection of indoor unit from
other refrigerant line
E20
Connection to other
refrigerant line found
during automatic address
setting
Indoor unit from other refrigerant line is detected
while indoor automatic address setting is in
progress.
E23
–
E23
Outdoor-outdoor
communication
transmission error
Signal cannot be transmitted to other outdoor
units.
E25
–
E25
Duplicated follower
outdoor address
There is duplication in outdoor addresses set
manually.
E26
Address of outdoor unit from which
signal is not received normally
E26
Dropping out of outdoor
unit
Follower outdoor unit initially communicating
normally fails to do so (reduction in number of
follower outdoor units connected).
E28 Detected outdoor unit No.
E28
Outdoor follower unit error
Outdoor header unit detects fault relating to
follower outdoor unit (detail displayed on follower
outdoor unit).
E31
E31
IPDU communication error
There is no communication between IPDUs (P.C.
boards) in inverter box.
F04
–
F04
ALT
Outdoor discharge
temperature sensor (TD1)
error
Outdoor discharge temperature sensor (TD1) has
been open/short-circuited.
F05
–
F05
ALT
Outdoor discharge
temperature sensor (TD2)
error
Outdoor discharge temperature sensor (TD2) has
been open/short-circuited.
F06
01: TE1
02: TE2
F06
ALT
Outdoor heat exchanger
temperature sensor (TE1,
TE2) error
Outdoor heat exchanger temperature sensors
(TE1, TE2) have been open/short-circuited.
F07
–
F07
ALT
Outdoor liquid temperature
sensor (TL) error
Outdoor liquid temperature sensor (TL) has been
open/short-circuited.
F08
–
F08
ALT
Outdoor outside air
temperature sensor (TO)
error
Outdoor outside air temperature sensor (TO) has
been open/short-circuited.
F11
–
F11
IPDU: Intelligent Power Drive Unit (Inverter P.C. board)
: Lighting,
: Flashing,
: Goes off
ALT.: Flashing is alternately when there are two flashing LED
SIM: Simultaneous flashing when there are two flashing LED
Operation Timer Ready
01
02
03
04
05
06
07
08
09
1 2
A3-IPDU Fan
IPDU
Fan
IPDU
3
0A
0B
0C
0D
0E
0F
1 2
A3-IPDU
O
O
O
O
O
O
O
O
3
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Circle (O):
Faulty IPDU
