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Remote
controller
alarm display
P29
Error in current
detection circuit.
• AC current value
is high, even while
compressor is
halted.
F04
Disconnection, open
circuit or short circuit
in discharge
temperature sensor
(TD)
F06
Disconnection, open
circuit or short circuit
in outdoor unit heat
exchanger temp.
sensor (C1)
F07
Disconnection, open
circuit or short circuit
in outdoor unit heat
exchanger temp.
sensor (C2)
F08
Disconnection, open
circuit or short circuit
in outdoor air temp.
sensor (TO)
F12
Disconnection, open
circuit or short circuit
5
in suction temp.
sensor (TS)
F31
EEPROM trouble
L02
Indoor and outdoor
units incompatible
(PAC-i, ECO-i, GHP)
L04
Settings failure
L07
Settings failure
L10
Settings failure
L13
Indoor and outdoor
unit types
E06
Outdoor unit detected
a signal error from
the indoor unit
E07
Outdoor unit sending
failure to indoor unit
Alarm
Judgement conditions
contents
• Inverter halted after alarm
detected.
• Alarm output on 4 consecutive
(pre-trips.)
Sensor detection error (90
or more after 60 minutes has
elapsed since the compressor
was halted.)(Open circuit)
Open circuit or short circuit
Open circuit or short circuit
Open circuit or short circuit
Open circuit or short circuit
Reading/writing failure
Indoor unit judged incompatible
with the outdoor unit type
Duplicated outdoor unit address
(system address)
Group control wiring exists in
an individually-controlled indoor
unit.
Outdoor unit capacity not set.
Outdoor unit judged incompatible
with the outdoor unit type
Serial signals receiving failure
(including faulty unit quantity
confi rmation)
Serial signal sending failure
Eliminating
condition of alarm
Recovery at restart
Automatic recovery
Automatic recovery
Automatic recovery
Automatic recovery
Automatic recovery
Power reset recovery 1.Check EEPROM (IC007).
Power reset recovery 1.Check indoor unit EEPROM.
Automatic recovery
Power reset recovery 1.Check inter-unit control
Power reset recovery Check outdoor unit EEPROM.
Automatic recovery
Automatic recovery
Automatic recovery
5-6
Judgement and correction
1.Stops immediately even
when operations restarted.
• Layer short on the
compressor
2.Check HIC circuit
• Wiring trouble
1.Check discharge temp.
sensor (TD).
2.Check outdoor unit control
PCB.
1.Check outdoor unit heat
exchanger temperature
sensor (C1).
2.Check outdoor unit control
PCB.
1.Check outdoor unit heat
exchanger temp. sensor
(C2).
2.Check outdoor unit control
PCB.
1.Check outdoor air temp.
sensor (TO).
2.Check outdoor unit control
PCB.
1.Check suction temp. sensor
(TS).
2.Check outdoor unit control
PCB.
2.Check outdoor unit control
PCB.
2.Check indoor unit control
PCB.
1.Check outdoor unit system
address.
2.Check inter-unit control
wiring.
wiring.
2.Check indoor unit EEPROM.
1.Check indoor unit EEPROM.
2.Check outdoor unit control
PCB.
1.Check inter-unit control
wiring.
2.Check indoor and outdoor
unit control PCB.
1.Check inter-unit control
wiring.
2.Check outdoor unit control
PCB.
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