Toshiba MMY-MAP0726FT2P-UL - Diagnosis procedure for each check code

9-5. Diagnosis procedure for each check code
Yes No Yes Yes Yes
No
Yes No No No Yes No
[E01]
esuaCedoc kcehC Check code nameesuaCedoc kcehC Check code name
Check code
CauseCheck code name
* The check code is not indicated on the central control device or the 7-segment indication on the outdoor unit.
Yes
No
[E02] [E03]
Communication trouble between the indoor unit and remote controller (detected on the remote controller)
Signal transmission trouble on the remote controller
Communication trouble between the indoor unit and remote controller (detected on the indoor unit)
1. Remote controller inter-unit wire trouble 2. Indoor power trouble 3. Indoor P.C. board trouble 4. Remote controller address setup trouble 5. Remote controller P.C. board trouble
Unable to send signals to indoor units
No communication from the remote controller/communication adapter
Is the
inter-unit wire of
remote controllers (A/B)
normal?
The
communication wiring
between the remote
controller and indoor units
is connected properly.
Is there no
disconnection or
connector contact trouble on
harness out of terminal
block of indoor
unit?
Is a group control
operation?
Is power of each indoor
unit turned on?
Is power applied
to remote controller?
AB terminals: Approx.
DC18V
Is setup of two
remote controllers
without header remote
controller?
Correct inter-unit cable of remote controller.
Connect the wiring properly.
The transmission circuit in the remote controller malfunctions.
Replace the remote controller.
Correct connector connection and check circuit wiring. Check power connection status of indoor unit. (Turn on power again.)
Check indoor P.C. board. Failure Replace
Check remote controller P.C. board. Failure Replace
Change one to header/other to follower. (Remote controller address connector)
The trouble is detected when the indoor unit cannot receive the signal from the wired remote controller. Check the communication wiring from the remote controller A and B. The check code [E03] is not indicated on the remote controller as its communication is down. However, the code is indicated on the central controller of TCC-LINK.
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