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11 Troubleshooting
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 LED
D600
AB
D601 D602 D603 D604
SW01 SW02 SW03
1 1 1 Outdoor unit check code
A
Outdoor unit number
(U1
to U3)
B Check code display*
* 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
rorre 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 error
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 nothing
02: 2 or more header units
Number of header outdoor unit error
E20
01: Other line outdoor connected
02: Other line indoor connected
Other lines connected during automatic addressing
—32E
Communication transmission error between
outdoor units
pu tes sserdda roodtuo rewollof detacilpuD—52E
E26 Number of outdoor units which received normally Decrease of connected outdoor units
rorre tinu roodtuo rewolloF.oN TINU roodtuo detceteD82E
E31 IPDU quantity information
(*1)
IPDU communication error
UCM bus dna UCM neewteb rorre noitacinummoC 0813E
rorre rosnes 1DT—40F
rorre rosnes 2DT—50F
F06
01: TE1 sensor
02: TE2 sensor
TE1 sensor error
TE2 sensor error
rorre
rosnes 1LTrosnes 1LT :1070F
rorre rosnes OT—80F
Check code
Check code nameIndication on 7-segment display on the outdoor unit
Auxiliary code
F12
01: TS1 sensor
02: TS2 sensor
TS1 or TS2 sensor error
F13
01: Compressor 1
02: Compressor 2
TH (Heat sink) sensor error
)1LT ,1ET( gniriwsim rosnes .pmet roodtuO—51F
)sP ,dP( gniriwsim rosnes erusserp roodtuO—6
1F
rorre rosnes sP—32F
rorre rosnes dP—42F
rorre MORPEE roodtuO—13F
H01
01: Compressor 1
02: Compressor 2
Compressor breaking down
H02
01: Compressor 1
02: Compressor 2
Compressor error (Locked)
H03
01: Compressor 1
02: Compressor 2
Current detection circuit error
gniriwsim rosnes 1DT—50H
n
oitarepo evitcetorp erusserp woL—60H
H07 Detected outdoor UNIT No.
Oil level down detection
(Indicated only on the header outdoor unit)
H08
01: TK1 sensor error
02: TK2 sensor error
04: TK4 sensor error
05: TK5 sensor error
Temperature sensor error for oil level
gniriwsim rosnes 2DT—51H
H16
01: TK1 oil circuit error
02: TK2 oil circuit error
04: TK4 oil circuit error
05: TK5 oil circuit error
Oil level detector circuit error
revo stinu rotceles wolFsserdd
a tinu roodni detceteD01J flow error
rorre tnemeergasid ledom stinu roodtuO—
20L
noitacilpud sserdda metsys roodtu
O—40L
ytiroirp htiw stinu roodni fo noitacilpuD stinu roodni roirp fo rebmuN60L
tesnu sserdda/puorg tinu roodnI—80L
.tesnu yticapac tinu roodtuO—01L
L12 01: Flow selector unit(s) installation error Flow selector unit(s) system error
stinu roodtuo fo sledom tnetsisnocnI—71L
rorre tinu rotceles wolFsserdda tinu roodni detceteD81L
tinu roodtuo fo elbuort gnittes hctiwS)eludoM retaW toH( MWH :2032L
L24
01: Duplication of flow selector unit address
02: Indoor unit(s) operation mode priority setting
Flow selector unit(s) setting error
revo ytitnauq detcennoc roodtuO—82L
L29 IPDU number information
(*1)
IPDU quantity error
ti
nu roodni fo kcolretni lanretxEsserdda tinu roodni detceteD03L
srorre UDPI rosserpmoC—13L
65-EN 66-EN
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