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Check code
Outdoor 7-segment display
Sub-code
01: TG1
F09
02: TG2
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
Flash
control
display
F
1
2
A
F
1
5
A
F
1
6
A
F
2
3
A
F
2
4
A
F
3
1
I S
H05
H06
H
0
7
H08
H15
H16
L
0
4
I S
L
0
5
I S
L
0
6
I S
L (
0
) 8
I S
L
1
0
I S
L
1
7
I S
L23
SIM
L
2
8
I S
Typical problem site
Outdoor heat exchanger
Outdoor heat exchanger gas side temperature
gas side temperature
sensors (TG1, TG2) have been open/
sensor (TG1, TG2) trouble
-short circuited.
Outdoor suction
Outdoor suction temperature sensor
L
T
temperature sensor
(TS1,TS3) has been open/short-circuited.
(TS1,TS3) trouble
Outdoor temperature
Wiring trouble in outdoor temperature sensors
L
T
sensor (TE1,TL1)
(TE1,TL1) has been detected.
wiring trouble
Outdoor pressure sensor
Wiring trouble in outdoor pressure sensors (Pd,
L
T
(Pd, Ps) wiring trouble
Ps) has been detected.
Low pressure sensor (Ps)
L
T
Output voltage of low pressure sensor (Ps) is zero.
trouble
Output voltage of high pressure sensor (Pd) is zero
High pressure sensor (Pd)
L
T
or provides abnormal readings when compressors
trouble
have been turned off.
Outdoor EEPROM is faulty (alarm and shutdown
M
Outdooe EEPROM trouble
for header unit and continued operation for follower
unit)
Outdoor discharge
Wiring/installation trouble or detachment of
temperature sensor (TD1)
outdoor discharge temperature sensor (TD1) has
wiring trouble
been detected
Activation of low-pressure
Low pressure (Ps) sensor detects abnormally low
protectio
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)
Outdoor discharge
Wiring/installation trouble or detachment of
temperature sensor (TD2)
outdoor discharge temperature sensor (TD2) has
wiring trouble
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
M
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
M
unit (as displayed on
priority indoor unit.
priority indoor unit)
Duplicated priority indoor
unit (as displayed on
More than one indoor unit have been set up
M
indoor unit other than
as priority indoor unit.
priority indoor unit)
Indoor group address not
Address setting have not been performed for one
M
or more indoor units (also detected at indoor end).
set
Outdoor unit capacity has not been set (after P.C.
M
O
u
d t
o
r o
c
a
p
a
c
y t i
n
t o
s
t e
board replacement).
Outdoor model
Old model outdoor unit (prior to 6 series) has been
M
incompatibility trouble
connected.
SW setting mistake
Bit 3 and 4 of SW17 are turning on.
Too many outdoor units
More than three outdoor units have been
M
connected.
connected
81
Description of problem
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Troubleshooting
