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-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.
Outdoor 7-segment display
Main
remote
Check
controller
code
E01 –
E02 –
E03 –
E04 –
E06 E06
– E07
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Check code
Location
AI-NET central
of
control
detection
remote
Sub-code
controller
Remote
controller
– –
Remote
controller
– –
Indoor
unit
– 97
Indoor
unit
– 04
No. of indoor I/F
units from
which signal is
received
normally
04
I/F
– –
manuals search engine
Description System status
Indoor-remote Stop of Communication between
controller corresponding indoor P.C. board and remote
communication unit controller is disrupted.
error
(detected at
remote
controller end)
Remote Stop of Signal cannot be transmitted
controller corresponding from remote controller to
transmission unit indoor unit.
error
Indoor-remote Stop of There is no communication
controller corresponding from remote controller
communication unit (including wireless) or
error network adaptor.
(detected at
indoor end)
Indoor-outdoor Stop of Indoor unit is not receiving
communication corresponding signal from outdoor unit.
circuit error unit
(detected at
indoor end)
Dropping out of All stop Indoor unit initially
indoor unit communicating normally fails
to return signal for specified
length of time.
Indoor-outdoor All stop Signal cannot be transmitted
communication from outdoor to indoor units
circuit error for 30 seconds continuously.
(detected at
outdoor end)
178
Error detection
Check items (locations)
condition(s)
• 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.