Check Codes Displayed On Remote Controller And Smms-I Outdoor Unit (7-Segment Display On I/F Board) And Locations To Be Checked - Toshiba MMY-MAP0804HT8(Z)(ZG)-E Service Manual

8-4. Check Codes Displayed on Remote Controller 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
Outdoor 7-segment display
Main
remote
Check
Sub-code
controller
code
E01 – –
E02 – –
E03 – –
E04 – –
No. of indoor
units from
which signal is
received
normally
E06 E06
– E07 –
Location
AI-NET central
of Description
control
detection
remote
controller
Remote Indoor-remote
controller controller
communication
error
(detected at
remote
controller end)
–
Remote Remote
controller controller
– transmission
error
Indoor Indoor-remote
unit controller
communication
97
error
(detected at
indoor end)
Indoor Indoor-outdoor
unit communication
circuit error
(detected at
indoor end)
04
I/F Dropping out of
indoor unit
04
I/F Indoor-outdoor
communication
circuit error
–
(detected at
outdoor end)
Error detection
System status
condition(s)
Stop of Communication between
corresponding indoor P.C. board and remote
unit controller is disrupted.
Stop of Signal cannot be transmitted
corresponding from remote controller to
unit indoor unit.
Stop of There is no communication
corresponding from remote controller
unit (including wireless) or
network adaptor.
Stop of Indoor unit is not receiving
corresponding signal from outdoor unit.
unit
All stop Indoor unit initially
communicating normally fails
to return signal for specified
length of time.
All stop Signal cannot be transmitted
from outdoor to indoor units
for 30 seconds continuously.
178
Check items (locations)
• Check remote controller
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 controller
address settings
(when two remote
controllers are in use).
• Check remote controller
P.C. board.
• Check internal
transmission circuit of
remote controller.
--- Replace remote
controller as necessary.
• Check remote controller
and network adaptor
wiring.
• 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).
• 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).
• Check outdoor termination
resistance setting (SW30,
Bit 2).
• Check connection of
indoor-outdoor
communication circuit.