Installation Manual
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EN
EN-51
EN-52
9
Troubleshooting
In addition to the CODE No. on the remote control of an indoor unit, you can diagnose trouble 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
* 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].
Rotary switch setting
value
Indication
LED
SW01
SW02
SW03
1
1
1
Outdoor unit check code
A
Outdoor unit number
(U1)
B
Check code display*
Check code
Check code name
Indication on 7-segment display on the outdoor unit
Auxiliary code
E06
Number of indoor units which received normally
Decrease of number of indoor units
E07
—
Indoor / Outdoor communication circuit trouble
E08
Duplicated indoor addresses
Duplication of indoor addresses
E15
—
No indoor unit during automatic addressing
E16
00: Capacity over 01 or more: No. of connected units
Number of connected capacity over / indoor units
E20
01: Other line outdoor connected
02: Other line indoor connected
Other line connected during automatic addressing
E31
IPDU quantity information*1
IPDU communication trouble
F04
—
TD sensor trouble
F06
—
TE sensor trouble
F07
—
TL sensor trouble
F08
—
TO sensor trouble
F12
—
TS sensor trouble
F13
—
TH sensor (Board installed) trouble
F15
—
Outdoor temp. sensor miswiring (TE, TL)
F16
—
Outdoor pressure sensor miswiring (Pd, Ps)
F23
—
Ps sensor trouble
F24
—
Pd sensor trouble
F31
—
Outdoor EEPROM trouble
H01
—
Compressor breakdown
A
B
D600 D601 D602 D603 D604
H02
—
Compressor trouble (Lock)
H03
—
Current detective circuit system trouble
H06
—
Low-pressure protective operation
L04
—
Outdoor system address duplicated
L06
Number of indoor units with priority
Duplication of indoor units with priority
L08
—
Indoor group / Address unset
L10
—
Outdoor capacity unset
L29
IPDU quantity information *1
IPDU quantity trouble
L30
Detected indoor unit address
External interlock of indoor unit
P03
—
Discharge temp TD trouble
P04
—
High-pressure switch trouble
P05
00
Phase missing detection
*E (*: Fan motor number)
Fan motor Vdc trouble
—
Compressor Vdc trouble
P07
—
Heat sink overheat trouble
P10
Detected indoor unit address
Indoor overflow trouble
P13
—
Outdoor liquid back detection trouble
P15
01: TS condition 02: TD condition
Gas leak detection
P19
—
4-way valve operation trouble
P20
—
High-pressure protective operation
P22
*0: Elemental device short
*1: Position detective circuit trouble
*2: Input current sensor trouble
*3: Fan motor lock trouble *4: Motor current trouble
*5: Synchronize, step out trouble
*C: Sensor temperature trouble (No TH sensor)
*D: Sensor short, free trouble (No TH sensor)
(*: Fan motor number)
Outdoor fan IPDU trouble
P26
—
G-TR short protection trouble
P29
—
Compressor position detective circuit system trouble
*1 IPDU number information
01: Compressor 02: Fan 1 03: Compressor and Fan 1
04: Fan 2 05: Compressor and Fan 2 06: Fan 1 and Fan 2
07: Compressor, Fan 1 and Fan 2 09: Compressor
0A: Fan 1 0B: Compressor, Fan 1 0C: Fan 2
0D: Compressor, Fan 2 0E: Fan 1, Fan 2
0F: Compressor, Fan 1, Fan 2
Check code
Check code name
Indication on 7-segment display on the outdoor unit
Auxiliary code
+00_EB99809701_00Ta.book Page 26 Tuesday, December 6, 2016 2:07 PM
