Toshiba MMY-MAP0726FT2P-UL - Page 171

Yes No
Yes
Yes
No No
Yes
No
[E31]
esuaCedoc kcehC Check code name
IPDU communication trouble
1. Connection trouble of communication
line between IPDU and I/F P.C. board
2. I/F P.C. board trouble 3. IPDU P.C. board trouble 4. External noise
Is
communication
connector between IPDU
and I/F P.C. board
connected?
Is there
no disconnection on
communication line
between IPDU and I/F
P.C. board?
Is there
voltage deflection
between 4 and 5 pin of
CN600 on I/F P.C. board?
(Measurement with tester:
DC 0 to 5V,
5 pins GND)
Is there
voltage deflection
between 3 and 5 pin of
CN600 on I/F P.C. board?
(Measurement with tester:
DC0 to 5V,
5 pins GND)
Correct connection of connector. Replace communication line. I/F P.C. board trouble I/F P.C. board trouble
Replace defective IPDU P.C. board.
In the case that All IPDUs (A3- IPDUs and fan IPDUs) do not return response. * Two A3-IPDUs (NO 1 and 2) exist in all models,
one Fan-IPDU exists.
Sub-code
No
Reset power supply and reactivate.
Yes
I/F board trouble --> Replace
Was power
supply correctly reset? (Power supply OFF for
60 seconds or more)
Sub-code : 80 Communication trouble between MCU and MCU
1
2 1
01 ○
02 ○
03 ○ ○
08 ○
09 ○ ○
0A ○ ○
0B ○ ○ ○
A3-IPDU Fan-IPDU
− 170−
Yes
No
Yes
No
[F01]
Yes
No
Yes
No
[F02]
Check code Check code
Check code name
Indoor TCJ sensor trouble
Cause
TCJ sensor Open/Short
Check code name
Indoor TC2 sensor trouble
Cause
TC2 sensor Open/Short
Is TCJ
sensor connector
(CN102: Red) on indoor
P.C. board normally
connected?
Are characteristics
of TCJ sensor resistance
value normal?
Is TC2
sensor connector
(CN101: Black) on indoor
P.C. board normally
connected?
Are characteristics of
TC2 sensor resistance
value normal?
Correct connection of connector. Replace TCJ sensor. Correct connection of connector. Replace TC2 sensor.
Check indoor P.C. board. Failure Replace
Check indoor P.C. board. Failure Replace
* See “Indoor unit temperature sensor characteristics” on “9-10. Sensor Characteristics”. * See “Indoor unit temperature sensor characteristics” on “9-10. Sensor Characteristics”.