96
Check code
Main
remote
controller
E15
E16
E18
E19
E20
E23
E25
E26
E28
Outdoor 7-segment display
Check code
Auxiliary code
E15
—
E16
00: Capacity over
01 to: No. of connected units
—
—
E19
00: No header unit
02: Two or more header units
E20
01: Connection of outdoor of other line
02: Connection of indoor of other line
E23
—
E25
—
E26
No. of normally received outdoor units
E28
No. of detected outdoor units
Detected
position
I/F
I/F
Indoor
unit
I/F
I/F
I/F
I/F
I/F
I/F
Check code name
No corresponding indoor
unit during automatic
address
No. of connected indoor
units / Capacity over
Communication error
between indoor header
and follower units
Header outdoor unit
quantity error
Other line unit connected
during automatic address
Communication sending
error between outdoor
units
Duplicated outdoor
follower address setup
Decreased number of
connected outdoor units
Outdoor follower unit error
Status
All stop
All stop
Corresponding
unit only stops.
All stop
All stop
All stop
All stop
All stop
All stop
Error detection condition
Indoor unit is not found when indoor automatic
address start was set up.
• Total capacity of indoor units exceeded 135%
of total outdoor capacity.
• No. of connected indoor units are more than
48 units.
[Note]
If this code appears after backup setup of outdoor
unit trouble, set up “No. capacity-over detection”.
<Setup method of
“No. capacity-over detection”>
Turn on SW09/Bit 2 on I/F P.C. board of outdoor
header unit.
Regular communication between indoor header
and follower units
• There are multiple header outdoor units in
1 line.
• There is none of header outdoor unit in 1 line.
Unit of other line was connected when indoor
automatic address started.
Transmission of other outdoor unit was
unavailable for 30 seconds or more.
Outdoor addresses manually set up are
duplicated.
The signal was not returned for constant from
the outdoor unit which was receiving signal.
Outdoor header unit received error code from
outdoor follower unit.
Check item (position)
• Check the communication line connection between
indoor and outdoor.
• Check the electric power line error in indoor.
• Check the noise of surrounding devices.
• Power failure
• Check indoor P.C. board error.
• Check the connection capacity of indoor unit.
• Check the HP capacity of indoor unit.
• Check the indoor/outdoor capacity setup
• Check the No. of connected indoor units.
• Check the outdoor I/F P.C. board error
• Check cable of the remote controller.
• Check power cabling of indoor.
• Check P.C. board of indoor.
The outdoor unit connected with communication cable
between indoor and outdoor (U1.U2) is the outdoor unit.
• Check connection of communication line between indoor
and outdoor.
• Check outdoor P.C. board(I/F) error.
Separate the cable between lines according to automatic
address setup method in “Address setup”.
• Check power supply in outdoor unit. (Is power supplied?)
• Check connection or disconnection of connecting wire
between outdoor units.
• Check connection of connector for outdoor P.C. board
communication.
• Check outdoor P.C. board (I/F) error.
• Check terminal resistance setting of communication
between outdoor units
[Note]
Do not set up the outdoor address manually.
• Outdoor backup is being set.
• Check power supply of outdoor unit. (Is power supplied?)
• Check connection or disconnection of connecting wire
between outdoor units.
• Check connection of connector for outdoor P.C. board
communication.
• Check outdoor P.C. board (I/F) error.
• Check the check code of outdoor follower unit.
<Convenient functions>
When pushing SW04 for 1 second or more under condition that [E28] is displayed on 7-segment display of outdoor header unit, the fan of
outdoor unit which stopped abnormally starts rotating.
If pushing SW04 and SW05 simultaneously, the fan of normal outdoor unit operates. When pushing SW05 singly, the operation of fan is cleared.
