Toshiba MMY-MAP0724HT6UL, Service Manual

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9-4. Check codes displayed on remote control and SMMS-
i outdoor unit (7-segment display on I/F board) and
locations to be checked
For other types of outdoor units, refer to their own service manuals.
Check code
Location
of
detection
Description System status Error detection condition(s) Check items (locations) Wired
remote
control
Outdoor 7-segment display
Check
code
Sub-code
E01 – –
Remote
control Indoor-remote
control
communication
error
(detected at
remote control
end) Stop of
corresponding
unit Communication between indoor
P.C. board and remote control is
disrupted. • Check remote control inter-unit
tie cable (A/B).
• Check for broken wire or
connector bad contact.
• Check indoor power supply.
• Check for defect in indoor P.C.
board.
• Check remote control address
settings
(when two remote controls are in
use).
• Check remote control P.C. board.
E02 – –
Remote
control Remote control
transmission
error Stop of
corresponding
unit Signal cannot be transmitted from
remote control to indoor unit. • Check internal transmission
circuit of remote control.
--- Replace remote control as
necessary.
E03 – –
Indoor
unit Indoor-remote
control
communication
error
(detected at
indoor end) Stop of
corresponding
unit There is no communication from
remote control (including wireless)
or “1:1 Model” Connection Interface. • Check remote control and “1:1
Model” Connection Interface
wiring.
E04 – –
Indoor
unit Indoor-outdoor
communication
circuit error
(detected at
indoor end) Stop of
corresponding
unit Indoor unit is not receiving signal
from outdoor unit. • Check order in which power was
turned on for indoor and outdoor
units.
• Check indoor address setting.
• Check indoor-outdoor tie cable.
• Check outdoor termination
resistance setting (SW30, Bit 2).
E06 E06
No. of indoor
units from
which signal is
received
normally I/F Dropping out of
indoor unit All stop Indoor unit initially communicating
normally fails to return signal for
specified length of time. • Check power supply to indoor
unit.
(Is power turned on?)
• Check connection of indoor-
outdoor communication cable.
• Check connection of
communication connectors on
indoor P.C. board.
• Check connection of
communication connectors on
outdoor P.C. board.
• Check for defect in indoor P.C.
board.
• Check for defect in outdoor P.C.
board (I/F).
– E07 –
I/F Indoor-outdoor
communication
circuit error
(detected at
outdoor end) All stop Signal cannot be transmitted from
outdoor to indoor units for 30
seconds continuously. • Check outdoor termination
resistance setting (SW30, Bit 2).
• Check connection of indoor-
outdoor communication circuit.
E08 E08
Duplicated
indoor address Indoor
unit
I/F Duplicated
indoor address All stop More than one indoor unit is
assigned same address. • Check indoor addresses.
• Check for any change made to
remote control connection
(group/individual) since indoor
address setting.
E09 – –
Remote
control Duplicated
master remote
control Stop of
corresponding
unit In two remote control configuration
(including wireless), both controllers
are set up as master. (Header
indoor unit is shut down with alarm,
while follower indoor units continue
operating.) • Check remote control settings.
• Check remote control P.C.
boards.
E10 – –
Indoor
unit Indoor inter-
MCU
communication
error Stop of
corresponding
unit Communication cannot be
established/maintained upon
turning on of power or during
communication. • Check for defect in indoor P.C.
board