Toshiba MMU-AP0121MH - Manual (Page 58)

58
Check code
Main
remote
controller
L06
L07
L08
L09
L10
L17
L18
L20
L28
L29
L30
—
Outdoor 7-segment display
Check code
L06
—
L08
—
L10
L17
L18
—
L28
L29
L30
L31
Auxiliary code
No. of indoor units with priority
—
—
—
—
—
Corresponding indoor address
—
—
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 indoor address
—
Detected
position
I/F
Indoor
Indoor
Indoor
I/F
I/F
I/F
Indoor
I/F
I/F
Indoor
I/F
Check code name
Duplicated indoor units with priority
(Displayed on the unit other than
indoor unit with priority)
Group line in individual indoor unit.
Indoor group / address unset
Indoor capacity unset
Outdoor capacity unset
Inconsistent models of outdoor
units
FS unit system error
Duplicated central control
addresses
Quantity over of connected outdoor
units
IPDU quantity error
Interlock in indoor unit from outside
Extended IC (Integrated Circuit)
error
Status
All stop
Corresponding
unit only stops.
Corresponding
unit only stops.
Corresponding
unit only stops.
All stop
Corresponding
unit only stops.
All stop
All stop
All stop
Corresponding
unit only stops.
Operation
continues.
Error detection condition
Indoor units with priority were
duplicated.
At least one indoor unit connected
to a group existed in the individual
indoor units.
Address was not yet set up.
Indoor unit capacity was unset.
On the I/F P.C. board for service,
jumper line was not cut according to
the model.
Outdoor units of 1 series and those
of 2 series were mixed.
An indoor unit which is not
connected with FS unit is driving
without setup for cooling only mode.
Duplicated central control
addresses
There were more than four outdoor
units.
No. of IPDU units detected when
power was turned on were less.
• Outside error input terminal
Detected signal to (CN80) for
more 1 minute
P.C. board (I/F) parts error
Check item (position)
• 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 AI-NET)
• 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.
Check indoor (I/F) P.C. board.