Check Codes Displayed On Remote Controller And Smms Outdoor Unit (7-Segment Display On I/F Board) And Locations To Be Checked - Toshiba MMD-AP0186HP-E Service Manual

9-4. Check codes displayed on remote controller and SMMS 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
controller Sub-code
code
E01
E02
E03
E04
No. of indoor
units from
which signal is
received
normally
E06 E06
E07
Location
Description System status
of
detection
Remote Indoor-remote Stop of
controller controller corresponding
communication unit
error
(detected at
remote
controller end)
Remote Remote Stop of
controller controller corresponding
transmission unit
error
Indoor Indoor-remote Stop of
unit controller corresponding
communication unit
error
(detected at
indoor end)
Indoor Indoor-outdoor Stop of
unit communication corresponding
circuit error unit
(detected at
indoor end)
I/F Dropping out of All stop
indoor unit
I/F Indoor-outdoor All stop
communication
circuit error
(detected at
outdoor end)
– –
66
Error detection
Check items (locations)
condition(s)
Communication between Check remote controller
inter-unit tie cable (A / B).
indoor P.C. board and remote
Check for broken wire or
controller is disrupted.
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.
Signal cannot be transmitted Check internal
from remote controller to transmission circuit of
indoor unit. remote controller.
--- Replace remote
controller as necessary.
There is no communication Check remote controller
from remote controller and network adaptor
(including wireless) or
wiring.
network adaptor.
Indoor unit is not receiving Check order in which
power was turned on for
signal from outdoor unit.
indoor and outdoor units.
Check indoor address
setting.
Check indoor-outdoor tie
cable.
Check outdoor termination
resistance setting (SW30,
Bit 2).
Indoor unit initially
Check power supply to
communicating normally fails
indoor unit.
to return signal for specified
(Is power turned on?)
Check connection of
length of time.
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).
Signal cannot be transmitted Check outdoor termination
resistance setting (SW30,
from outdoor to indoor units
Bit 2).
for 30 seconds continuously.
Check connection of
indoor-outdoor
communication circuit.