9-4. Check Codes Displayed on Remote Controller and SMMS
series 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
Location
of
detection
Description
System status
Check code detection
condition(s)
Check items (locations)
• Check remote controller
inter-unit tie cable (A/B).
• Check for broken wire or
connector bad contact.
• Check indoor power
supply.
• Check for failure in indoor
P.C. board.
• Check remote controller
address settings
(when two remote
controllers are in use).
• Check remote controller
P.C. board.
Remote
controller
Indoor-remote
controller
communication
trouble
(detected at
remote
controller end)
Stop of
corresponding
unit
Communication between
indoor P.C. board and
remote controller is
disrupted.
E01
—
—
• Check internal
transmission circuit of
remote controller.
--- Replace remote
controller as necessary.
Remote
controller
Remote
controller
transmission
trouble
Stop of
corresponding
unit
Signal cannot be transmitted
from remote controller to
indoor unit.
E02
—
—
• Check remote controller
and network adaptor
wiring.
Indoor unit
Indoor-remote
controller
communication
trouble
(detected at
indoor end)
Stop of
corresponding
unit
There is no communication
from remote controller
(including wireless) or
network adaptor.
E03
—
—
• 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 (SW100,
Bit 2).
Indoor unit
Indoor-outdoor
communication
circuit trouble
(detected at
indoor end)
Stop of
corresponding
unit
Indoor unit is not receiving
signal from outdoor unit.
E04
—
—
• 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
No. 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
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.
—
—
Main
remote
controller
Outdoor 7-segment display
Check
code
Sub-code
- 136 -
Содержание MMC-UP0151HP-E
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