Toshiba MMW-UP0271LQ-E - Page 55

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Check code
Location
of
detection
Description System status
Check code detection
condition(s)
Check items (locations)
• Check power supply to
indoor unit.
(Is power turned on?)
• Check indoor-outdoor
power-on sequence.
• Check indoor address
setting
• Check wiring of Indoor-
outdoor communication
wires
• Check outdoor terminator
resistor setting (SW100,
Bit 2).
Indoor unitNo. of indoor
units from
which signal is
received
normally
Display on main remote
controller.
Indoor units unavailable for
indoor / outdoor
communication. :E04
Indoor units available for
indoor / outdoor
communication. : E06
Indoor-outdoor
communication
circuit trouble
(E04)
All stop Condition 1
One indoor unit or more
initially communicating
normally fails to return signal
for specified length of time.
Condition 2
Outdoor I / F board
SW09 or SW103, Bit4 : ON
(To switch the check code
detection condition.)
In TU2C-LINK
communication system, if
the termination resistance is
not set in any of the indoor
units.
E04/E06 E06
• 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 failure in indoor
P.C. board.
• Check for failure in outdoor
P.C. board (I/F).
I/F Dropping out of
indoor unit
(E06)
• Check outdoor terminator
resistor setting (SW100,
Bit 2).
• Check connection of
indoor-outdoor
communication circuit.
I/F Indoor-outdoor
communication
circuit trouble
(detected at
outdoor end)
All stop Signal cannot be transmitted
from outdoor to indoor units
for 30 seconds continuously.
— E07 —
• Check indoor addresses.
• Check for any change
made to remote controller
connection (group/
individual) since indoor
address setting.
Indoor unit
I/F
Duplicated
indoor address
Duplicated
indoor address
All stop More than one indoor unit
are assigned same address.
E08 E08
Main
remote
controller
Outdoor 7-segment display
Check
code
Sub-code
1
ON
23
SW09 or SW103
4
• 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 failure in indoor
P.C. board.
• Check for failure in outdoor
P.C. board (I/F).
I/FNo. of indoor
units from
which signal is
received
normally
Dropping out of
indoor unit
All stop Condition 1
All indoor unit initially
communicating normally
fails to return signal for
specified length of time.
Condition 2
Outdoor I / F board
SW09 or SW103, Bit4 : OFF
(Factory default)
E04
E06
• Check power supply to
indoor unit.
(Is power turned on?)
• Check indoor-outdoor
power-on sequence.
• Check indoor address
setting
• Check wiring of Indoor-
outdoor communication
wires
• Check outdoor terminator
resistor setting (SW100,
Bit 2).
Indoor unit Indoor-outdoor
communication
circuit trouble
Only specified
indoor units stop
Condition 1
Indoor unit initially
communicating
normally fails to return
signal for specified
length of time.
——
Indoor unit (including Hot Water Module)