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Check code
Outdoor 7-segment display
Main
remote
Check
Sub-code
controller
code
E09
–
–
E10
–
–
E12
E12
–
E15
E15
–
00:
Overloading
01-:
No. of units
connected
E16
E16
E18
–
–
01:
Connection of
outdoor unit
from other line
E20
E20
02:
Connection of
indoor unit from
other line
Fan IPDU
A3-
1
IPDU
(Upper)
01
O
02
O
E
3
1
E
3
1
03
O
O
04
05
O
06
O
07
O
O
Circle (O): Troubled IPDU
AMP Air Conditioning
Location
of
Description
detection
Remote
Duplicated
controller
master remote
controller
Indoor
Indoor inter-
unit
MCU
communication
error
I/F
Automatic
address starting
trouble
I/F
Indoor unit not
found during
automatic
address setting
I/F
Too many
indoor units
connected
Indoor
Trouble in
unit
communication
between indoor
header and
follower units
I/F
Connection to
other line found
during
automatic
address setting
I/F
IPDU
communication
2
(Lower)
trouble
O
O
O
O
Check code detection
System status
condition(s)
Stop of
In two remote controller
corresponding
configuration (including
unit
wireless), both controllers are
set up as master. (Header
indoor unit is shut down with
alarm, while follower indoor
units continue operating.)
Stop of
Communication cannot be
corresponding
established / maintained
unit
upon turning on of power or
during communication.
All stop
Indoor automatic address
setting is started while
automatic address setting for
equipment in other refrigerant
line is in progress.
All stop
Indoor unit cannot be
detected after indoor
automatic address setting is
started.
All stop
Combined capacity of
indoor units exceeds
130 % of combined
capacity of outdoor units.
Note:
If this code comes up
after backup setting for
outdoor unit failure is
performed, perform "No
overloading detected"
setting.
<"No overloading detected"
setting method>
Turn on SW09 / Bit 2 on I/F
P.C. board of outdoor unit.
More than 13 indoor units
are connected.
Stop of
Periodic communication
corresponding
between indoor header and
unit
follower units cannot be
maintained.
All stop
Equipment from other line is
found to have been
connected when indoor
automatic address setting is
in progress.
All stop
Communication is disrupted
between IPDUs (P.C.
boards) in inverter box.
108
119
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Check items (locations)
Check remote controller
settings.
Check remote controller
P.C. boards.
Check for trouble in indoor
P.C. board.
Perform automatic address
setting again after
disconnecting
communication cable to
that refrigerant line.
Check connection of
indoor-outdoor
communication line.
Check for trouble in indoor
power supply system.
Check for noise from other
devices.
Check for power failure.
Check for trouble in indoor
P.C. board.
Check capacities of indoor
units connected.
Check combined HP
capacities of indoor units.
Check HP capacity
settings of outdoor units.
Check No. of indoor units
connected.
Check for trouble in outdoor
P.C. board (I/F).
Check remote controller
wiring.
Check indoor power supply
wiring.
Check P.C. boards of
indoor units.
Disconnect inter-line tie
cable in accordance with
automatic address setting
method explained in
"Address setting" section.
Check wiring and
connectors involved in
communication between
IPDU-I/F P.C. board for
bad contact or broken wire.
Check for trouble in outdoor
P.C. board (I/F, A3-IPDU
or Fan IPDU).
Check for external noise.
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Table of Contents
Troubleshooting
