Toshiba Super MMU-AP0092H Service Manual page 95

9-4. Check Code and Check Position Displayed on the Remote Controller and Outdoor Unit
(7-Segment Display of Interface)
<In case of SUPER MODULAR MULTI SYSTEM>
Check code
Main Outdoor 7-segment display
remote
controller Check code Auxiliary code
E01 — —
E02 — —
E03 — —
E04 — —
E06 E06 No. of indoor units
which received
signal normally
— E07 —
E08 E08 Duplicated indoor
addresses
E09 — —
E10 — —
E12 E12 01: Indoor/outdoor
communication
02: Between outdoors
communication
Detected
Check code name
position
Remote Communication error between
controller indoor and remote controller
(Detected at remote controller side)
Remote Remote controller sending error
controller
Indoor Communication error between
unit indoor and remote controller
(Detected at indoor side)
Indoor Indoor/outdoor communication
unit circuit error
(Detected at indoor side)
I/F Decreased number of indoor units
I/F Indoor/outdoor communication
circuit error
(Detected at outdoor side)
Indoor Duplicated indoor addresses
I/F
Remote Duplicated master remote
controller controllers
Indoor Communication error between
unit indoor P .C. board assembly
I/F Automatic address start error
Status Error detection condition
Corresponding Communication interrupted between
unit only stops. indoor P .C. board and remote controller.
Corresponding Signal could not be sent from remote
unit only stops. controller to indoor unit.
Corresponding No communication from remote
unit only stops. controller (including wireless) and
communication adapter.
Corresponding Indoor unit does not receive
unit only stops. communication from outdoor unit.
All stop When signal is not sent for a certain
period from the indoor unit which has
been used to send signals.
All stop Transmission from outdoor to indoor
cannot continue for 30 seconds.
All stop Multiple indoor unit address setup are
duplicated.
Corresponding In 2-remote controller control (including
unit only stops. wireless), both are setup as master
(Header indoor unit stops and other
indoor unit is operating.)
Corresponding Communication was not succeeded
unit only stops. after power was supplied or during
communication.
All stop • When indoor automatic address
started, other refrigerant circuit system
was setting automatic address.
• When outdoor automatic address
started, indoor automatic address
was executed.
Check item (position)
• Check remote controller inter-unit cable (A/B).
• Check disconnection, connector contact error.
• Check indoor power supply.
• Check indoor P .C. board error.
• Check remote controller address setup.
(When two remote controllers operate)
• Check remote controller P .C. board.
• Check the communication wire of remote controller:
Exchange remote controller.
• Check remote controller and communication adapter wiring.
• Check power-ON order of indoor/outdoor.
• Check indoor address setup.
• 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)
• Check connection of communication line between indoor and outdoor.
• Check connector connection for communication in indoor P .C. board.
• Check connector connection for communication in outdoor P .C. board.
• Check indoor P .C. board failure.
• Check outdoor P .C. board (I/F) failure.
• Check outdoor terminator resistor setup (SW30-2).
• Check the communication connection between indoor and outdoor.
• Check indoor address.
• Check the change of remote controller connection (Group / individual)
after setup of indoor address.
• Check remote controller setup.
• Check remote controller P .C. board.
• Indoor P .C. board failure
• Setup the address again after disconnecting communication
connection with other refrigerant circuit system.