Toshiba Carrier MMU-AP0074HPUL, Service Manual

Page: 63 / 105

E08 E08
Duplicated
indoor address Indoor
unit
I/F Duplicated
indoor address All stop More than one indoor unit is
assigned same address. Check indoor addresses.
Check for any change
made to remote controller
connection (group /
individual) since indoor
address setting.
E09
Remote
controller Duplicated
master remote
controller Stop of
corresponding
unit In two remote controller
configuration (including
wireless), both controllers are
set up as master. (Header
indoor unit is shut down with
alarm, while follower indoor
units continue operating.) Check remote controller
settings.
Check remote controller
P.C. boards.
E10
Indoor
unit Indoor inter-
MCU
communication
error Stop of
corresponding
unit Communication cannot be
established / maintained
upon turning on of power or
during communication. Check for defect in indoor
P.C. board
E12 E12
E15
E16
01:
Indoor-outdoor
communication
02:
Outdooroutdoor
communication I/F Automatic
address starting
error All stop Indoor automatic address
setting is started while
automatic address setting
for equipment in other
refrigerant line is in
progress.
Outdoor automatic
address setting is started
while automatic address
setting for indoor units is in
progress.
Perform automatic address
setting again after
disconnecting
communication cable to
that refrigerant line.
E15
I/F Indoor unit not
found during
automatic
address setting All stop Indoor unit cannot be
detected after indoor
automatic address setting is
started. Check connection of
indoor-outdoor
communication line.
Check for error in indoor
power supply system.
Check for noise from other
devices.
Check for power failure.
Check for defect in indoor
P.C. board.
E16
00:
Overloading
01-:
No. of units
connected I/F Too many
indoor units
connected All stop Combined capacity of
indoor units exceeds 135
% 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.
More than 48 indoor units
are connected.
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 defect in outdoor
P.C. board (I/F).
< "No overloading detected "
setting method>
Turn on SW09/Bit 2 on I/F
P.C. board of outdoor header
unit.
Check code
Location
of
detection
Description System status
Error detection
condition(s)
Check items (locations)
Outdoor 7-segment display
Sub-code
Check
code
Main
remote
controller
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