Toshiba MMC-AP0154H-E(-TR), Service Manual, Page: 73 / 226

– 73 –
9 2 L 9 2 L
M I S ) 0 3 L ( . o N t i n u r o o d n i d e t c e t e D 0 3 L
Indoor external error input
(interlock)
P03 –
–
–
–
–
P0301: Compressor 1
02: Compressor 2
03: Compressor 3
ALT
ALT
5 0 P 5 0 P
7 0 P 7 0 P
P10
P13 – P13
P15
P17 – P17
T L A 8 1 P – 8 1 P
Outdoor discharge (TD3)
temperature error Outdoor discharge temperature sensor (TD3)
detects abnormally high temperature.
9 1 P 9 1 P
Outdoor unit No. detected
ALT
T L A 0 2 P – 0 2 P
Flash
Operation Timer Ready
01
02
03
04
05
06
07
08
09
1 2
A3-IPDU Fan
IPDU
Fan
IPDU
3
0A
0B
0C
0D
0E
0F
1 2
A3-IPDU
O
O
O
O
O
O
O
O
3
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Circle (O):
Faulty IPDU
Check code Display of receiving unit
Typical fault site Description of error
Outdoor 7-segment display
TCC-LINK
central control
or main remote
controller
display
Indicator light block
Sub-code
L08
(L08)
SIM Indoor group address not
set
Address setting has not been performed for one or
more indoor units (also detected at indoor end).
L10
L10
SIM
SIM
Outdoor capacity not set
Outdoor unit capacity has not been set (after P.C.
board replacement).
Old model outdoor unit (prior to 3 series) has been
connected.
L17
SIM L17
Outdoor model
incompatibility error
L18
SIM
L18
FS (Flow Selector) unit
error
Cooling / heating cycle error resulting from piping
error is detected.
More than four outdoor units have been
connected.
L28
L28
SIM
SIM
Too many outdoor units
connected
SMMS (Series 1)
01: A3-IPDU1 error
02: A3-IPDU2 error
03: A3-IPDU1/A3-IPDU2 error
04: Fan IPDU error
05: A3-IPDU1
+ Fan IPDU error
06: A3-IPDU2
+ Fan IPDU error
07: All IPDU error
SMMS-i (Series 4)
There are insufficient number of IPDUs (P.C.
boards) in inverter box.
Error in number of IPDUs
Indoor unit has been shut down for external error
input in one refrigerant line (detected by indoor
unit).
Outdoor discharge temperature sensor (TD1) has
detected abnormally high temperature. Outdoor discharge (TD1)
temperature error
P04
P04
High-pressure SW
activation
High-pressure SW was activated.
00: Open phase detected
Open phase / power failure
Open phase is detected when power is turned on.
Inverter DC voltage is too high (overvoltage) or too
low (undervoltage).
Inverter DC voltage (Vdc)
error
MG-CTT error
ALT
01: Compressor 1
02: Compressor 2
03: Compressor 3
01: Compressor 1
02: Compressor 2
03: Compressor 3
ALT
Heat sink overheating
error
Temperature sensor built into IGBT (TH) detects
overheating.
Indoor unit No. detected
(P10)
ALT
Indoor unit has been shutdown in one refrigerant
line due to detection of overflow (detected by
indoor unit).
Indoor unit overflow
ALT
Outdoor liquid backflow
detection error
State of refrigerant cycle circuit indicates liquid
backflow operation.
01: TS condition
02: TD condition
P15
ALT
ALT
Outdoor suction temperature sensor (TS1) detects
sustained and repeated high temperatures that
exceed standard value.
Gas leak detection
Outdoor discharge (TD2)
temperature error
Outdoor discharge temperature sensor (TD2)
detects abnormally high temperature.
4-way valve reversing
error
Abnormality in refrigerating cycle is detected
during heating operation.
Activation of high-pressure
protection
High pressure (Pd) sensor detects high pressure
that exceeds standard value.
MG-CTT: Magnet contactor