Toshiba MCY-MHP0806HT8-C Series Service Manual page 111

Check code
Outdoor 7-segment display
Main
remote
Check
Sub-code
controller
code
No. of priority
indoor units
L06 L06
L07 – –
L08 L08 –
L09 – –
L10 L10 –
L20 – –
02: SW setting
mistake when
L23 –
HWM is
connected
Fan IPDU
A3-IPDU
1 (Upper) 2 (Lower)
O
01
O
02
03 O O
04 O
05 O O
O O
06
O O O
07
Circle (O): Faulty IPDU
(*) Concerning the "00"
L 2 9 L 2 9
auxiliary code
1) The wrong model setting
for the interface P.C.
board was used when the
board was replaced with
the service P.C. board.
In such a case, the
sub-codes "08" to "0F" for
L29, which are not
included in the table
above, may be displayed.
2) The wrong model setting
for the IPDU P.C. board
was used when the board
was replaced with the
service P.C. board.
Detected
indoor address
L30 L30
– L31 –
Location
of Description System status
detection
I/F Duplicated All stop
priority indoor
unit (as
displayed on
indoor unit other
than priority
indoor unit)
Indoor Connection of Stop of
unit group control corresponding
cable to stand- unit
alone indoor unit
Indoor Indoor group / Stop of
unit addresses not corresponding
set unit
Indoor Indoor capacity Stop of
unit not set corresponding unit
I/F Outdoor All stop
capacity not set
AI-NET Duplicated All stop
Indoor central control
unit address
SW setting All stop
I/F
mistake
I/F Trouble in No. of All stop
IPDUs
Indoor External
Stop of
unit interlock of corresponding
indoor unit unit
I/F Extended IC Continued
trouble operation
Check code detection
condition(s)
More than one indoor unit
have been set up as priority
indoor unit.
There is at least one stand-
alone indoor unit to which
group control cable is
connected.
Address setting has not been
performed for indoor units.
Capacity setting has not been
performed for indoor unit.
Jumper wire provided on P.C.
board for servicing I/F P.C.
board has not been removed
as required for given model.
There is duplication in central
control address setting.
Bit4 of SW09 is not turned
on when HWM is
connected.
Insufficient number of IPDUs
are detected when power is
turned on.
• Signal is present at
external error input
terminal (CN80) for 1
minute.
There is part failure in P.C.
board (I/F).
110
Check items (locations)
• Check displays on priority
indoor unit and outdoor
unit.
• Check indoor addresses.
• Check indoor addresses.
Note:
This code is displayed
when power is turned on
for the first time after
installation.
Set indoor capacity. (DN =
11)
Check model setting of P.C.
board for servicing outdoor
I/F P.C. board.
• Check central control addresses.
• Check network adaptor
P.C. board.
Check switch setting of
•
Bit4 of SW09 in outdoor
P.C. board (I/F).
• Check model setting of
P.C. board for servicing
outdoor I/F P.C. board.
• Check connection of UART
communication connector.
• Check A3-IPDU, fan IPDU,
and I/F P.C. board for
defect.
When external device is
connected to CN80
connector:
1) Check for defect in
external device.
2) Check for trouble in indoor
P.C. board.
When external device is not
connected to CN80
connector:
1) Check for trouble in indoor
P.C. board.
Check outdoor P.C. board
(I/F).