Toshiba MMU-AP0152SH Service Manual page 53

7-4. Check Code and Check Position Displayed on the Remote Controller and Outdoor Unit
(7-Segment Display of Interface)
Check code
Outdoor 7-segment display
Main
remote central control
controller Check code remote controller
Sub-code
E01 — —
E02 — —
E03 — —
E04 — —
E06 E06 No. of indoor
units which
received signal
normally
— E07 —
E08 E08 Duplicated
indoor
addresses
E09 — —
E10 — —
Detected
Check code name
AI-NET
position
— Remote Communication error between
controller indoor and remote controller
(Detected at remote controller side)
— Remote Remote controller sending error
controller
97 Indoor unit Communication error between
indoor and remote controller
(Detected at indoor side)
4 Indoor unit Indoor/outdoor communication
circuit error
(Detected at indoor side)
4 I/F Decreased number of indoor units
— I/F Indoor/outdoor communication
circuit error
(Detected at outdoor side)
96 Indoor Duplicated indoor addresses
I/F
99 Remote Duplicated master remote
controller controllers
CF Indoor unit Communication error between
indoor P .C. board assembly
Status Error detection condition
Corresponding Communication interrupted • Check remote controller inter-unit cable (A/B).
unit only stops. between indoor P .C. board
• Check disconnection, connector contact error.
and remote controller.
• Check indoor power supply.
• Check indoor P .C. board error.
• Check remote controller address setup.
• Check remote controller P .C. board.
Corresponding Signal could not be sent from • Check the communication wire of remote controller: Exchange remote
unit only stops. remote controller to indoor
unit.
Corresponding No communication from • Check remote controller and communication adapter wiring.
unit only stops. remote controller (including
wireless) and communication
adapter.
Corresponding Indoor unit does not receive • Check power-ON order of indoor/outdoor.
unit only stops. communication from outdoor
• Check indoor address setup.
unit.
• Check inter-unit cabling between indoor and outdoor.
• Check outdoor end terminal resistance setup (SW30-2).
• Check the power supply of indoor unit. (Power-ON)
All stop When signal is not sent for a
certain period from the indoor
• Check connection of communication line between indoor and outdoor.
unit which has been used to
• Check connector connection for communication in indoor P .C. board.
send signals, [E06] is
• Check connector connection for communication in outdoor P .C. board.
normally displayed.
• Check indoor P .C. board failure.
• Check outdoor P .C. board (I/F) failure.
• Check outdoor terminator resistor setup (SW30-2).
All stop Transmission from outdoor to
indoor cannot continue for 30
• Check the communication connection between indoor and outdoor.
seconds.
All stop Multiple indoor unit address • Check indoor address.
setup are duplicated.
• Check the change of remote controller connection (Group / individual)
Corresponding In 2-remote controller control • Check remote controller setup.
unit only stops. (including wireless), both are
• Check remote controller P .C. board.
setup as master
(Header indoor unit stops and
other indoor unit is operating.)
Corresponding There is any trouble in power • Indoor P .C. board failure
unit only stops. line.
Check item (position)
(When two remote controllers operate)
controller.
after setup of indoor address.