Toshiba MMY-MAP0806HT8P Service Manual page 182

Check code
Outdoor 7-segment display
Main
remote
Check
Sub-code
controller
code
A3-IPDU Fan-IPDU
1 2 1
01 ○
02 ○
03 ○ ○
08 ○
09 ○ ○
0A ○ ○
0B ○ ○ ○
L29 L29
Detected indoor address
L30 L30
– L31 –
P01 – –
P03 P03 –
Location
of
detection
I/F
A3-IPDU Fan-IPDU
2 1 2 1 2
10 ○
11 ○ ○
12 ○ ○
13 ○ ○ ○
18 ○ ○
19 ○ ○ ○
1A ○ ○ ○
1B ○ ○ ○ ○
Circle (O): Faulty IPDU
Indoor
unit
I/F
Indoor
unit
I/F
Description System status
Error in No. of All stop
IPDUs
External Stop of
interlock of corresponding
indoor unit unit
Extended IC Continued
error operation
Indoor fan Stop of
motor error corresponding
unit
Discharge All stop
temperature
TD1 error
− 181 −
Error detection
Check items (locations)
condition(s)
Insufficient number of IPDUs • Check model setting of
are detected when power is P.C. board for servicing
turned on. 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.
• Signal is present at When external device is
external error input connected to CN80
terminal (CN80) for 1 connector:
minute. 1) Check for defect in
2) Check for defect in indoor
When external device is not
connected to CN80
connector:
1) Check for defect in indoor
There is part failure in P.C. Check outdoor P.C. board
board (I/F). (I/F).
• Check the lock of fan motor
(AC fan).
• Check wiring.
Discharge temperature (TD1) • Check outdoor service
exceeds 115°C. 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 error
in SV41 or SV42).
external device.
P.C. board.
P.C. board.