ā 173 ā
[L17]
No
[L20]
No
No
[L28]
Check code CauseCheck code name
Check code CauseCheck code name
Check code CauseCheck code name
In case that SHRM-i is connected with another
outdoor unit (SMM-i)
Incompatible combination of
outdoor units
Central control addresses are duplicated.
Duplicated central control Central
addresses
Quantity over of connected
outdoor units
Are
not two or more
central control devices
which have same network
address
connected?
Is the
number of
the connected outdoor
units 3 or
less?
Is the
communication
line between outdoor
units correctly
connected?
Correct the network address
of the central control system.
Max. 3 outdoor units are
connectable for one system.
Correct connection of the
communication line.
Check I/F P.C. board.
Check the network adaptor on the
indoor P.C. board.
No
Ye s
Ye s
Ye s
Ye s
[L18]
Check code
Cause
Check code name
As Cooling-only setting was forgotten against
Cooling-only indoor unit, heating operation started.
FS unit error
Was
Cooling-only set against
Cooling-only indoor unit?
Set Cooling-only setting.
DN = 0F
Check Cooling/Heating FS unit.
1. Quantity over of connected outdoor units.
2. Connection error of communication line between
outdoor units
3. Outdoor I/F P.C. board error
[L29]
No
Ye s
Ye s
Ye s
Ye s
Ye s
No
No
No
No
Sub-code
01
02
03
04
05
06
07
08
09
12
A3-IPDU
3
0A
0B
0C
0D
0E
0F
12
A3-IPDU
O
O
O
O
O
O
O
O
3
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Check code
CauseCheck code name
Is jumper
setup of outdoor I/F
P.C. board correct?
(Check jumpers 8, 9,
10, 11 and 12)
Is
communication
connector between IPDU
and I/F P.C. board
connected?
Is there
no disconnection of
communication line between
IPDU and I/F P.C.
board?*
Is there
voltage fluctuation
between 4 and 5 pins of
CN600 on I/F P.C. board?
(Measurement by tester:
DC0 to 5V,
5 pin GND)
Is there
voltage fluctuation
between 3 and 5 pins of
CN600 on I/F P.C. board?
(Measurement by tester:
DC0 to 5V,
5 pin GND)
,
Correct connection of connector.
Correct connection of connector.
Replace communication line.
I/F P.C. board error
I/F P.C. board error
Replace the troubled
IPDU P.C. board.
IPDU quantity error
1. Incorrect model setup in service for I/F P.C. board
2. Communication error between A3-IPDU, fan IPDU
and I/F
3. A3-IPDU, fan IPDU, I/F P.C. board error
Fan
IPDU
Fan
IPDU
O: IPDU error part
In the case that All IPDUs (A3- IPDUs and fan IPDUs) do not
return response.
* Two A3-IPDUs (NO. 1 and 2) exist in 8, 10 HP models.
In 12 or 14 HP models, three A3-IPDUs (No. 1, 2, 3) exist.
To Next Page
Loading...
