119
(*1) All stop only in case of the header unit The follower unit continues operation.
Check code
Outdoor 7-segment display
Wired
remote
controller Check code
Auxiliary code
AI-NET
central control
remote controller
Detected
position
Check code
name
Status
Error detection condition
Check item (position)
F23
F23
—
43
I/F
Ps sensor error
All stop
Output voltage of Ps sensor was zero.
• Misconnection of Ps sensor and Pd sensor connectors
• Check connection of Ps sensor connector.
• Check Ps sensor error.
• Check compression error of compressor.
• Check 4-way valve error.
• Check outdoor P.C. board (I/F) error.
• Check SV4 circuit error.
F24
F24
—
43
I/F
Pd sensor error
All stop
Output voltage of Pd sensor was zero.
(Sensor Open)
Pd > 4.15MPa during stop of compressor
• Check connection of Pd sensor connector.
• Check Pd sensor error.
• Check outdoor P.C. board (I/F) error.
F29
—
—
12
Indoor
Indoor other
error
Corresponding
unit only stops.
Indoor P.C. board did not operate normally. • Check indoor P.C. board error (EEPROM error).
F31
F31
—
1C
I/F
Outdoor
EEPROM error
All stop (*1)
Outdoor P.C. board (I/F) did not operate
normally.
• Check power voltage.
• Check power noise.
• Check outdoor P.C. board (I/F) error.
H01
H01
01: Compressor 1
1F
IPDU
Compressor
breakdown
All stop
Inverter current detection circuit detected
over-current and stopped.
• Check power voltage. (AC220–240V ± 10%).
• Check compressor error.
• Check cause of abnormal overload operation.
• Check outdoor P.C. board (IPDU) error.
H02
H02
01: Compressor 1
1d
IPDU
Compressor
error (lock)
All stop
Over-current was detected several
seconds after header compressor had
started.
• Check compressor error.
• Check power voltage. (AC220–240V ± 10%).
• Check cable of compressor and phase-missing.
• Check connector/terminal connection on IPDU P.C. board.
• Check conduction of case heater.
(Check activation error due to liquid stagnation in compressor.)
• Check outdoor P.C. board (IPDU) error.
H03
H03
01: Compressor 1
17
IPDU
Current
detection circuit
system error
All stop
While header compressor stopped,
current flowed more than the specified
amount.
• Check cabling of current detection circuit system.
• Check outdoor P.C. board (IPDU) error.
H04
H04
—
44
I/F
Compressor 1
case thermo
operation
All stop
Compressor 1 case thermostat performed
protective operation.
• Check compressor 1 case thermo circuit.
(Connector, cable, P.C. board)
• Check full opening of service valve. (Gas and liquid side)
• Check outdoor PMV clogging.
• Check SV4 circuit leakage.
• Check miscabling/misinstallation of SV4.
• Check valve open status of indoor PMV.
• Check 4-way valve error.
• Check refrigerant shortage.
• Check SV5 leak.