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Check code
Outdoor 7-segment display
Sub-code
01: TS1
F
1
2
03: TS3
F
1
5
–
F
1
6
–
F
2
3
–
F
2
4
–
F
3
1
–
H05
–
H06
–
H
0
7
–
01: TK1 sensor trouble
02: TK2 sensor trouble
H08
04: TK4 sensor trouble
05: TK5 sensor trouble
H15
–
01: TK1 oil circuit trouble
02: TK2 oil circuit trouble
H16
04: TK4 oil circuit trouble
05: TK5 oil circuit trouble
L
0
4
–
Number of priority indoor units
L06
(check code L05 or L06 depending
on individual unit)
L
0
8
–
L
1
0
–
L
1
7
–
L23
–
L
2
8
–
Display of receiving unit
TCC-LINK
Indicator light block
central control
or main remote
Operation Timer Ready
control
Flash
display
F
1
2
A
L
T
F
1
5
A
L
T
F
1
6
A
L
T
F
2
3
A
L
T
F
2
4
A
L
T
F
3
1
I S
M
H05
H06
H
0
7
H08
H15
H16
L
0
4
I S
M
L
0
5
I S
M
L
0
6
I S
M
L (
0
) 8
I S
M
L
1
0
I S
M
L
1
7
I S
M
L23
SIM
L
2
8
I S
M
- 52 -
Typical problem site
Outdoor suction
Outdoor suction temperature sensor
temperature sensor
(TS1,TS3) has been open/short-circuited.
(TS1,TS3) trouble
Outdoor temperature
Wiring trouble in outdoor temperature
sensor (TE1,TL1)
sensors (TE1,TL1) has been detected.
wiring trouble
Wiring trouble in outdoor pressure sensors
Outdoor pressure sensor
(Pd, Ps) wiring trouble
(Pd, Ps) has been detected.
Low pressure sensor (Ps)
Output voltage of low pressure sensor (Ps) is zero.
trouble
Output voltage of high pressure sensor (Pd) is zero
High pressure sensor (Pd)
or provides abnormal readings when compressors
trouble
have been turned off.
Outdoor EEPROM is trouble (alarm and
Outdoor EEPROM trouble
shutdown for header unit and continued operation
for follower unit)
Wiring/installation trouble or detachment of
Outdoor discharge
temperature sensor (TD1)
outdoor discharge temperature sensor (TD1)
wiring trouble
has been detected.
Activation of low-pressure
Low pressure (Ps) sensor detects abnormally low
protection
operating pressure.
Temperature sensor for oil level detection
L
o
w
l i o
e l
v
l e
p
o r
e t
t c
o i
n
(TK1,TK2,TK4,TK5) detects abnormally low oil
level.
Trouble in temperature
Temperature sensor for oil level detection
sensor for oil level
(TK1,TK2,TK4,TK5) has been open/short-
detection
circuited.
(TK1,TK2,TK4,TK5)
Wiring/installation trouble or detachment of
Outdoor discharge
temperature sensor (TD2)
outdoor discharge temperature sensor (TD2)
wiring trouble
has been detected.
No temperature change is detected by
Oil level detection circuit
temperature sensor for oil level detection
trouble
(TK1,TK2,TK4,TK5) despite compressor having
been started.
Identical refrigerant line address has been
Duplicated outdoor
assigned to outdoor units belonging to different
refrigerant line address
refrigerant piping systems.
Duplicated priority indoor
More than one indoor unit have been set up as
unit (as displayed on
priority indoor unit.
priority indoor unit)
Duplicated priority indoor
More than one indoor unit have been set up
unit (as displayed on
indoor unit other than
as priority indoor unit.
priority indoor unit)
Address setting have not been performed for one
Indoor group address not
set
or more indoor units (also detected at indoor end).
Outdoor unit capacity has not been set (after P.C.
O
u
d t
o
r o
c
a
p
a
c
y t i
n
t o
s
t e
board replacement).
Old model outdoor unit (prior to 6 series) has been
Outdoor model
incompatibility trouble
connected.
SW setting mistake
Bit 3 and 4 of SW17 are turning on.
More than three outdoor units have been
Too many outdoor units
connected
connected.
Description of problem
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Table of Contents
Troubleshooting
