Installation Manual
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EN
• You cannot change the temperature setting during the test run.
• Errors are detected as usual.
• The unit does not perform test run for 3 minutes after turning the power on or stopping running.
Stop operation
1
Set the rotary switches on the interface P.C. board of the outdoor unit back:
SW01 to [1], SW02 to [1] and SW03 to [1].
7-segment display
[A]
[U1]
[B]
[ ]
SW09
SW07
SW11
SW06
SW10
SW12 SW13
SW16
SW14
SW17
D600 D601 D602 D603 D604
SW04
SW05
SW15
SW01
SW02
SW03
SW30
D600 D601 D602 D603 D604
SW04
SW05
SW15
SW01
SW02
SW03
Interface P.C. board
Push switch
7-segment
display [A]
Push switch
7-segment
display [B]
Rotary switches
9
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
* 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, or HWM unit only
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
01: TL1 sensor
03: TL3 sensor
TL1 or TL3 sensor trouble
F08
—
TO sensor trouble
F12
01: TS1 sensor
03, 04: TS3 sensor
TS1 or TS3 sensor trouble
F13
—
TH sensor (Board installed) trouble
F15
—
Outdoor temp. sensor miswiring (TE, TL1)
F16
—
Outdoor pressure sensor miswiring (Pd, Ps)
F23
—
Ps sensor trouble
F24
—
Pd sensor trouble
D600
A
B
D601 D602 D603 D604
EN-75
EN-76
2FAN_IM_DB04307201-04_EN.book Page 38 Tuesday, December 17, 2019 6:34 PM