Installation Manual
‒
49
‒
49-EN
Wired
remote
controller
display
Wireless remote controller
Sensor block display of
receiving unit
Main defective parts
Judging
device
Parts to be checked / error description
Air conditioner
status
Indication
Operation Timer
Ready
GR GR OR
Flashing
P01
ALT
Indoor unit fan error
Indoor
Indoor fan motor, indoor P.C. board ---
Indoor AC fan error (fan motor thermal
relay activated) was detected.
Entire stop
P03
ALT
Outdoor unit discharge
temp. error
Outdoor
An error was detected in the discharge
temp. releasing control.
Entire stop
P04
ALT
Outdoor unit high-
pressure system error
Outdoor
High-pressure switch --- The IOL was
activated or an error was detected in the
high-pressure releasing control using the
TE.
Entire stop
P05
ALT
Open phase detected
Outdoor
The power wire may be connected
incorrectly. Check open phase and
voltages of the power supply.
Entire stop
P07
ALT
Heat sink overheat
Outdoor
Abnormal temperature was detected by
the temp. sensor of the IGBT heat sink.
Entire stop
P10
ALT
Indoor unit water
over
fl
ow detected
Indoor
Drain pipe, clogging of drainage,
fl
oat
switch circuit, indoor P.C. board ---
Drainage is out of order or the
fl
oat
switch was activated.
Entire stop
P12
ALT
Abnormal operation of
the fan of the indoor unit
Indoor
Abnormal operation of the indoor fan
motor, indoor P.C. board, or indoor DC
fan (over current or lock, etc.) is detected.
Entire stop
P15
ALT
Gas leakage detected
Outdoor
There may be gas leakage from the pipe
or connecting part. Check for gas leakage.
Entire stop
P19
ALT
4-way valve error
Outdoor
(Indoor)
4-way valve, indoor temp. sensors (TC /
TCJ) --- An error was detected due to
temperature drop of the indoor unit heat
exchanger sensor during heating.
Auto-reset
P20
ALT
High-pressure protective
operation
Outdoor
High-pressure protection.
Entire stop
P22
ALT
Outdoor unit fan error
Outdoor
Outdoor unit fan motor, outdoor unit P.C.
board --- An error (overcurrent, locking,
etc.) was detected in the outdoor unit fan
drive circuit.
Entire stop
P26
ALT
Outdoor unit inverter Idc
activated
Outdoor
IGBT, outdoor unit P.C. board, inverter
wiring, compressor --- Short-circuit
protection for compressor drive circuit
devices (G-Tr / IGBT) was activated.
Entire stop
P29
ALT
Outdoor unit position
error
Outdoor
Outdoor unit P.C. board, high-pressure
switch --- Compressor motor position
error was detected.
Entire stop
P31
ALT
Other indoor unit error
Indoor
Another indoor unit in the group is raising
an alarm.
Entire stop
E03 / L07 / L03 / L08 alarm check
locations and error description.
Auto-reset
: Lighting : Flashing : OFF : The air conditioner automatically enters the auto-address setting mode.
ALT : When two LEDs are
fl
ashing, they
fl
ash alternately. SIM: When two LEDs are
fl
ashing, they
fl
ash in synchronization.
Receiving unit display OR : Orange GR : Green
