Check Codes Displayed On Remote Control And Smms Outdoor Unit (7-Segment Display On I/F Board) And Locations To Be Checked - Toshiba MMD-AP0726HP-UL Service Manual

9-4.
Check Codes Displayed on Remote Control and
SMMS-e 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
control
code
E01 –
E02 –
E03 –
E04 –
No. of indoor units from
which signal is received
normally
E06 E06
– E07
Location
of Description
detection
Remote Indoor-remote
control control
communication
trouble
(detected at
remote
control end)
–
Remote Remote
control control
– transmission
trouble
Indoor Indoor-remote
unit control
communication
–
trouble
(detected at
indoor end)
Indoor Indoor-outdoor
unit communication
circuit trouble
(detected at
indoor end)
–
Signal lack of
I/F
indoor unit
I/F Indoor-outdoor
communication
circuit trouble
–
(detected at
outdoor end)
Trouble detection
System status
condition(s)
Stop of Communication between
corresponding indoor P.C. board and
unit remote control is disrupted.
Stop of Signal cannot be
corresponding transmitted from remote
unit control to indoor unit.
There is no communication
Stop of
corresponding from remote control
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.
- 59 -
Check items (locations)
• 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 control
are in use).
• Check remote control
P.C. board.
• Check internal
transmission circuit of
remote control.
--- Replace remote
control as necessary.
• Check remote control
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 terminator
resistor 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 terminator
resistor setting (SW30,
Bit 2).
• Check connection of
indoor-outdoor
communication circuit.