Toshiba MML-AP0074BH2UL, Руководство по обслуживанию

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– 64 –
Main
remote
control
Check code
L09 — —
Indoor
unit Indoor capacity
not set Stop of
corresponding
unit Capacity setting has not been
performed for indoor unit. Set indoor capacity. (DN = 11)
L10 L10 —
I/F Outdoor
capacity not set All stop Jumper wire provided on P.C.
board for servicing I/F P.C. board
has not been removed as required
for given model. Check model setting of P.C. board
for servicing outdoor I/F P.C. board.
L20 — —
Network
adaptor
Indoor unit Duplicated
central control
address All stop There is duplication in central
control address setting. • Check central control addresses.
• Check network adaptor P.C.
board .
L23 — —
I/F SW setting
mistake All stop Outdoor P.C. board (I/F) does not
operate normally. • Check switch setting of Bit 3 and
4 of SW17 in outdoor P.C. board
(I/F).
L28 L28 —
I/F Too many
outdoor units
connected All stop There are more than three outdoor
units. • Check No. of outdoor units
connected (Only up to 3 units per
system allowed).
• Check communication lines
between outdoor units.
• Check for defect in outdoor P.C.
board (I/F).
— L31 —
I/F Extended IC
trouble Continued
operation There is part failure in P.C. board
(I/F). Check outdoor P.C. board
(I/F).
P01 — —
Indoor
unit Indoor fan
motor trouble Stop of
corresponding
unit • Check the lock of fan motor
(AC fan).
• Check wiring.
L30 L30
Detected indoor
address Indoor
unit External
interlock of
indoor unit Stop of
corresponding
unit • Signal is present at external
trouble input terminal (CN80)
for 1 minute. When external device is
connected to CN80 connector:
1) Check for defect in external
device.
2) Check for defect in indoor P.C.
board.
When external device is not
connected to CN80 connector:
1) Check for defect in indoor P.C.
board.
L29 L29
I/F Trouble in No.
of IPDUs All stop Insufficient number of IPDUs are
detected when power is turned on. • 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.
Outdoor 7-segment display
Check
code
Sub-code
Location
of
detection
Description System status
Trouble detection
condition(s)
Check items (locations)
A3-IPDU
Circle (O): IPDU trouble
Fan-IPDU
1
O
O
O
O
O
O
O
O
01
02
03
08
09
0A
0B
10
11
12
13
18
19
1A
1B
2
O
O
O
O
O
O
O
O
1
O
O
O
O
O
O
O
O
2
O
O
O
O
O
O
O
O
P03 P03 —
I/F Discharge
temperature
TD1 trouble All stop Discharge temperature (TD1)
exceeds 239°F (115°C). • Check outdoor service valves
(gas side, liquid side) to confirm
full opening.
• Check outdoor PMVs (PMV1, 3)
for clogging.
• Check resistance characteristics
of TD1 sensor.
• Check for insufficiency in
refrigerant quantity.
• Check for defect in 4-way valve.
• Check for leakage of SV4 circuit.
• Check SV4 circuit (wiring or
installation trouble in SV41 or SV42).
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