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Check code
Main
remote
controller
E31
F01
F02
F03
F04
F05
F06
F07
F08
F10
F12
Outdoor 7-segment display
Check code
E31
—
—
—
F04
F05
F06
F07
F08
—
F12
Auxiliary code
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
—
—
—
—
—
—
—
—
—
01: TS1
02: TS2
Detected
position
I/F
Indoor unit
Indoor unit
Indoor unit
I/F
I/F
I/F
I/F
I/F
Indoor
I/F
Check code name
IPDU communication
error
Indoor TCJ sensor
error
Indoor TC2 sensor
error
Indoor TC1 sensor
error
TD1 sensor error
TD2 sensor error
TE1 sensor error
TL sensor error
TO sensor error
Indoor TA sensor
error
TS1, TS2 sensor
error
Status
All stop
Corresponding
unit only stops.
Corresponding
unit only stops.
Corresponding
unit only stops.
All stop
All stop
All stop
All stop
All stop
Corresponding
unit only stops.
All stop
Error detection condition
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).
• 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)
• 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/cabling of TCJ sensor connector.
• Check characteristics of TCJ sensor resistance value.
• Check indoor P.C. board error.
• Check connection/cabling of TC2 sensor connector.
• Check characteristics of TC2 sensor resistance value.
• Check indoor P.C. board error.
• Check connection/cabling 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.
• Check connection of TL sensor connector.
• Check characteristics of TL sensor resistance value.
• Check outdoor P.C. board (I/F) error.
• Check connection of TO sensor connector.
• Check characteristics of TO sensor resistance value.
• Check outdoor P.C. board (I/F) error.
• Check connection/cabling of TA sensor connector.
• Check characteristics of TA sensor resistance value.
• Check indoor P.C. board error.
• Check connection of TS1 or TS2 sensor connector.
• Check characteristics of TS1, TS2 sensor resistance value.
• Check outdoor P.C. board (I/F) error.