Toshiba MMY-MAP0804HT8-E Service Manual page 181

Outdoor 7-segment display
Main
remote
Check
controller
code
E18 –
E19 E19
E20 E20
E23 E23
E25 E25
E26 E26
E28 E28
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Check code
Location
AI-NET central
of
control
detection
remote
Sub-code
controller
Indoor
unit
– 97·99
00: I/F
No header unit
02:
Two or more
header units 96
01: I/F
Connection of
outdoor unit
from other line
42
02:
Connection of
indoor unit from
other line
I/F
– 15
I/F
– 15
Address of I/F
outdoor unit
from which
signal is not
received
normally
15
Detected I/F
outdoor unit
No.
d2
manuals search engine
Description System status
Error in Stop of Periodic communication
communication corresponding between indoor header and
between indoor unit follower units cannot be
header and maintained.
follower units
Error in number All stop • There is more than one
of outdoor outdoor header unit in one
header units line.
• There is no outdoor header
unit in one line.
Connection to All stop Equipment from other line is
other line found found to have been
during connected when indoor
automatic automatic address setting is
address setting in progress.
Outdoor- All stop Signal cannot be transmitted
outdoor to other outdoor units for at
communication least 30 seconds
transmission continuously.
error
Duplicated All stop There is duplication in
follower outdoor outdoor addresses set
address manually.
Dropping out of All stop Outdoor unit initially
outdoor unit communicating normally fails
to return signal for specified
length of time.
Outdoor All stop Outdoor header unit receives
follower unit error code from outdoor
error follower unit.
180
Error detection
Check items (locations)
condition(s)
• Check remote controller
wiring.
• Check indoor power supply
wiring.
• Check P.C. boards of
indoor units.
Outdoor header unit is
outdoor unit to which indoor-
outdoor tie cable (U1,U2) is
connected.
• Check connection of
indoor-outdoor
communication line.
• Check for defect in outdoor
P.C. board (I/F).
Disconnect inter-line tie cable
in accordance with automatic
address setting method
explained in "Address
setting" section.
• Check power supply to
outdoor units. (Is power
turned on?)
• Check connection of tie
cables between outdoor
units for bad contact or
broken wire.
• Check communication
connectors on outdoor
P.C. boards.
• Check for defect in outdoor
P.C. board (I/F).
• Check termination
resistance setting for
communication between
outdoor units.
Note:
Do not set outdoor
addresses manually.
• Backup setting is being
used for outdoor units.
• Check power supply to
outdoor unit. (Is power
turned on?)
• Check connection of tie
cables between outdoor
units for bad contact or
broken wire.
• Check communication
connectors on outdoor
P.C. boards.
• Check for defect in outdoor
P.C. board (I/F).
• Check check code
displayed on outdoor
follower unit.
<Convenient functions>
If SW04 is pressed and held
for at least 1 second while
[E28] is displayed on the 7-
segmentdisplay of outdoor
header unit, the fan of the
outdoor unit that has been
shut down due to an error
comes on.
If SW04 and SW05 are
pressed simultaneously, the
fans of normal outdoor units
come on.
To stop the fan or fans, press
SW05 on its own.