Toshiba SUPER MMK-AP0073H (IN) Service Manual page 67

Check code
Main
Outdoor 7-segment display
remote
controller Check code Sub-code
L03 — —
L04 L04 —
L05 — —
L06 L06 No. of indoor units with
priority
L07 — —
L08 L08 —
L09 — —
L10 L10 —
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
Detected
AI-NET Check code name
position
central control
remote controller
96 Indoor Duplicated indoor center units
96 I/F Duplicated outdoor line address
96 I/F Duplicated indoor units with priority
(Displayed on indoor unit with priority)
96 I/F Duplicated indoor units with priority
(Displayed on the unit other than
indoor unit with priority)
99 Indoor Group line in individual indoor unit.
99 Indoor Indoor group / address unset
46 Indoor Indoor capacity unset
88 I/F Outdoor capacity unset
98 AI-NET, Duplicated central control addresses
Indoor
46 I/F Quantity over of connected outdoor
units
CF I/F IPDU quantity error
Status Error detection condition
Corresponding There are multiple center • Check indoor address.
unit only stops. units in a group.
• Check the change of remote controller connection
All stop Line address setup is • Check line address.
duplicated against the
outdoor unit in different
refrigerant pipe system.
All stop Indoor units with priority • Check display of indoor unit with priority.
were duplicated.
All stop Indoor units with priority • Check display of indoor unit with priority and outdoor
were duplicated.
Corresponding At least one indoor unit • Check indoor address.
unit only stops. connected to a group
existed in the individual
indoor units.
Corresponding Address was not yet set up. • Check indoor address.
unit only stops.
[Note]
After installation, this code is displayed when the power
is firstly turned on.
Corresponding Indoor unit capacity was Set up indoor capacity. (DN=11)
unit only stops. unset.
All stop On the I/F P .C. board for Check model setup on outdoor I/F P .C. board A'ssy for
service, jumper line was not service.
cut according to the model.
All stop Duplicated central control • Check central control address.
addresses
• Check network adaptor P .C. board.
All stop There were more than four • Check No. of connected outdoor units.
outdoor units.
• Check communication line between outdoor units.
• Check outdoor P .C. board (I/F) error.
All stop No. of IPDU units detected • Check model setup for outdoor I/F service P .C. board.
when power was turned on
• Check connection of UART communication connector.
were less.
• Check IPDU, fan IPDU, and I/F P .C. board error.
[Note]
UART: Universal Asynchronous Receiver Transmitter.
Check item (position)
(Group/individual) after indoor address setup.
unit.
(In case of AI-NET)
(Max. 4 units per 1 system)