Toshiba Super MMU-AP0092H Service Manual page 101

Check code
Main
Outdoor 7-segment display
remote
controller Check code Auxiliary code
L05 — —
L06 L06 No. of indoor units with priority
L07 — —
L08 L08 —
L09 — —
L10 L10 —
L17 L17 —
L18 L18 Corresponding indoor address
L20 — —
L28 L28 —
L29 L29 01: IPDU1 error
02: IPDU2 error
03: IPDU1, 2 errors
04: Fan IPDU error
05: IPDU1 + Fan IPDU error
06: IPDU2 + Fan IPDU error
07: All IPDU error or communication error
between IPDU and I/F P .C. board, or
outdoor I/F P .C. board error
L30 L30 Detected indoor address
— L31 —
Detected
Check code name
position
I/F Duplicated indoor units with priority
(Displayed on indoor unit with priority)
I/F Duplicated indoor units with priority
(Displayed on the unit other than
indoor unit with priority)
Indoor Group line in individual indoor unit.
Indoor Indoor group / address unset
Indoor Indoor capacity unset
I/F Outdoor capacity unset
I/F Inconsistent models of outdoor units
I/F FS unit system error
TCC-Link Duplicated central control addresses
Indoor
I/F Quantity over of connected outdoor
units
I/F IPDU quantity error
Indoor Interlock in indoor unit from outside
I/F Extended IC (Integrated Circuit) error
Status Error detection condition
All stop Indoor units with priority were
duplicated.
All stop Indoor units with priority were
duplicated.
Corresponding At least one indoor unit connected
unit only stops. to a group existed in the individual
indoor units.
Corresponding Address was not yet set up.
unit only stops.
Corresponding Indoor unit capacity was unset.
unit only stops.
All stop On the I/F P .C. board for service,
jumper line was not cut according to
the model.
When outdoor unit models are
intermingled. When 1/2 series of
SHRM was intermingled.
Corresponding An indoor unit which is not
unit only stops. connected with FS unit is driving
without setup for cooling only mode.
All stop Duplicated central control addresses
All stop There were more than four outdoor
units.
All stop No. of IPDU units detected when
power was turned on were less.
Corresponding • Outside error input terminal
unit only stops.
Detected signal to (CN80) for
more 1 minute
Operation P .C. board (I/F) parts error
continues.
Check item (position)
• Check display of indoor unit with priority.
• Check display of indoor unit with priority and
outdoor unit.
• Check indoor address.
• Check indoor address.
Note)
After installation, this code is displayed when the
power is firstly turned on.
Set up indoor capacity. (DN=11)
Check model setup on outdoor I/F P .C. board A'ssy
for service.
• Check outdoor units.
• Check setup of remote controller (DN=[OFF]).
• Check FS unit.
Check pipe connection to FS unit.
(Mispiping between discharge gas and suction gas)
Check miswiring/misinstallation of SVS/SVD valves.
• Check central control address.
• Check network adaptor P .C. board.
(In case of TCC-Link)
• Check No. of connected outdoor units.
(Max. 4 units per 1 system)
• Check communication line between outdoor units.
• Check outdoor P .C. board (I/F) error.
• Check model setup for outdoor I/F service P .C.
board.
• Check connection of UART communication
connector.
• Check IPDU, fan IPDU, and I/F P .C. board error.
Note)
UART: Universal Asynchronous Receiver Transmitter
n Outside device is connected to connector (CN80):
1) Check outside device error.
2) Check indoor P .C. board error.
n Outside device is not connected to connector (CN80):
1) Check indoor P .C. board error.
Check indoor (I/F) P .C. board.