8
3
Check code
Main
remote
controller
E25
E26
E28
E31
F01
F02
F03
F04
F05
F06
Outdoor 7-segment display
Check code
Sub-code
E25
—
E26
No. of normally received
outdoor units
E28
No. of detected outdoor
units
E31
01: IPDU1 error
02: IPDU2 error
03: IPDU1, 2 errors
04: Fan IPDU error
05: IPDU1 + Fan IPDU error
06: IPDU2 + Fan IPDU error
07: All IPDU error or
communication error
between IPDU and
I/F P.C. board or
outdoor I/F P.C. board error
—
—
—
—
—
—
F04
—
F05
—
F06
—
AI-NET
central control
remote controller
15
15
d2
CF
OF
Od
93
19
A1
18
Detected
position
I/F
I/F
I/F
I/F
Indoor
unit
Indoor
unit
Indoor
unit
I/F
I/F
I/F
Check code name
Duplicated outdoor follower
address setup
Decreased number of
connected outdoor units
Outdoor follower unit error
IPDU communication error
Indoor TCJ sensor error
Indoor TC2 sensor error
Indoor TC1 sensor error
TD1 sensor error
TD2 sensor error
TE1 sensor error
Status
All stop
All stop
All stop
All stop
Corresponding
unit only stops.
Corresponding
unit only stops.
Corresponding
unit only stops.
All stop
All stop
All stop
Error detection condition
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.
Communication of each IPDU (P.C.
board) in inverter box interrupted.
• Resistance value of sensor is
infinite or zero. (Open/Short)
• Resistance value of sensor is
infinite or zero (Open/Short).
• Resistance value of sensor is
infinite or zero (Open/Short).
• Resistance value of sensor is
infinite or zero (Open/Short).
• Resistance value of sensor is
infinite or zero (Open/Short).
• Resistance value of sensor is
infinite or zero (Open/Short).
Check item (position)
Note)
Do not set up the outdoor address manually.
• Outdoor is performing backup.
• Check the power of outdoor unit.
(Is the power turned on?)
• Check connection of inter-unit wire or disconnection
between outdoor units.
• Check the connector connection for communication on
outdoor P.C. board.
• Check outdoor P.C. board (I/F) error.
• Check the check code of outdoor follower unit.
• Check connection of communication connector and
disconnection between IPDU and I/F P.C. board.
• Check outdoor P.C. board (I/F, IPDU, Fan IPDU) error.
• Check external noise.
• Check power supply P.C. board for fan error.
• Check connection/wiring of TCJ sensor connector.
• Check characteristics of TCJ sensor resistance value.
• Check indoor P.C. board error.
• Check connection/wiring of TC2 sensor connector.
• Check characteristics of TC2 sensor resistance value.
• Check indoor P.C. board error.
• Check connection/wiring of TC1 sensor connector.
• Check characteristics of TC1 sensor resistance value.
• Check indoor P.C. board error.
• Check connection of TD1 sensor connector.
• Check characteristics of TD1 sensor resistance value.
• Check outdoor P.C. board (I/F) error.
• Check connection of TD2 sensor connector.
• Check characteristics of TD2 sensor resistance value.
• Check outdoor P.C. board (I/F) error.
• Check connection of TE1 sensor connector.
• Check characteristics of TE1 sensor resistance value.
• Check outdoor P.C. board (I/F) error.
<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.
FILE NO. SVM-1
40
77