EN
EN
EN
ID
– 42 –
In addition to the CODE No. on the remote controller of an indoor unit, you can diagnose failure type of an outdoor
unit by checking the 7-segment display on the interface P.C. board.
Use the function for various checks.
Set every DIP switch to OFF after checking.
7-Segment display and check code
Rotary switch setting value
Indication
7 - segment
LED
SW01 SW02 SW03
1 1 1 Outdoor unit check code
Display
contents
[U.
.E r r ] [ . ]
Display alternately every 2 seconds
: Outdoor Unit No.(1~5)
: Check code
: Sub code
* If a check code has an auxiliary code, the display indicates the check code for three seconds and the auxiliary
code for one second alternately.
Check code (indicated on the 7-segment display on the outdoor unit)
Indicated when SW01 = [1], SW02 = [1], and SW03 = [1].
Check code
Check code nameIndication on 7-segment display on the outdoor unit
Auxiliary code
E06 Number of indoor units which received normally
Decrease of number of indoor units
No indoor unit with a terminating resistor set
(TU2C-Link)
elbuort tiucric noitacinummoc roodtuo / roodnI—70E
.sesserdda roodni fo noitacilpuD sesserdda roodni detacilpuD80E
E12
01: Communication between indoor and outdoor units
02: Communication between outdoor units
Automatic addressing start trouble
gnisserdda citamotua gnirud tinu roodni oN — 51E
E16
00: Capacity over
01: Number of connected units
Capacity over / number of connected indoor units
E19
00: Header is not detected
02: 2 or more header units
Number of header outdoor unit trouble
E20
01: Other line outdoor connected
02: Other line indoor connected
Other lines connected during automatic addressing
noitacinummoc stinu roodtuo neewteb gnidneS
—32E
pu tes sserdda roodtuo rewollof detacilpuD—52E
E26 Number of outdoor units which received normally Decrease of connected outdoor units
elbuort tinu roodtuo rewolloFroodtuo detceteD82E
E31 Inverter quantity information
(*1)
Inverter communication trouble
UCM bus dna UCM neewteb elbuort noitacinummoC0813E
elbuort
rosnes 1DT —40F
elbuort rosnes 2DT —50F
F06
01: TE1 sensor
02: TE2 sensor
TE1 or TE2 sensor trouble
F07
01: TL1 sensor
02: TL2 sensor
03: TL3 sensor
TL1, TL2 or TL3 sensor trouble
elbuort rosnes OT—80F
Check code
Check code nameIndication on 7-segment display on the outdoor unit
Auxiliary code
F12
01: TS1 sensor
03: TS3 sensor
04: TS3 sensor detached
TS1 or TS3 sensor trouble
F13
1
: Compressor 1 side
2 : Compressor 2 side
TH (Heat sink) sensor trouble
Outdoor Temperature sensor miswiring (TE1, TL1)—51F
)sP ,dP( gniriwsim rosnes erusserp roodtuO —61F
elbuort rosnes sP—32F
elbuort rosnes dP—42F
elbuort MORPEE roodtuO—13F
H01
1
: Compressor 1 side
2 : Compressor 2 side
Compressor breaking down
H02
1
: Compressor 1 side
2 : Compressor 2 side
Compressor trouble (Locked)
H03
1
: Compressor 1 side
2 : Compressor 2 side
Current detection circuit system trouble
gniriwsim rosnes 1DT—50H
noitarepo evitcetorp erusserp woL—60H
noitceted nwod level liO—70H
H08
01: TK1 sensor trouble
02: TK2 sensor trouble
Temperature sensor trouble for oil level detection
gniriwsim rosnes 2DT—51H
H16
01: TK1 oil circuit trouble
02: TK2 oil circuit trouble
Oil level detector circuit system trouble
H17
1
: Compressor 1 side
2
: Compressor 2 side
Compressor trouble (step out)
L02 Detected indoor unit address Model mismatch of indoor and outdoor unit
noitacilpud sserdda metsys roodtuO—40L
ytiroirp htiw stinu roodni fo noitacilpuDstinu roodni roirp fo rebmuN60L
tesnu sserdda/puorg tinu roodnI—80L
.tesnu yticapac tinu roodtuO—01L
stinu roodtuo fo sledom tnetsisnocnI—71L
hctamsim stinu roodtuO—82L
L29
00 : when there are many inverter P.C. board.
: Inverter number information
(*1)
Inverter quantity trouble
tinu roodni fo kcolretni lanretxEsserdda tinu roodni detceteD03L
selbuort rosserpmoc rehtO—13L
elbuort 1DT erutarepmet egrahcsiD—30P
P04
01 : Compressor 1 side
02 : Compressor 2 side
High-pressure SW system operation
P05
1
: Compressor 1 side
2 : Compressor 2 side
Inverter DC voltage (Vdc) trouble
(compressor) MG-CTT trouble
00: Power outage detection
01: Open phase detection
02: Miswiring detection
Power outage detection
Open phase detection
Miswiring detection
14 Troubleshooting
trouble
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