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Ceiling Type
Installation Manual
EN
Ceiling Type
Installation Manual
F31
SIM
Outdoor unit P.C.
board
Outdoor
Outdoor P.C. board ---- In the case of EEPROM error. Entire
stop
H01
Outdoor unit
compressor
breakdown
Outdoor
Current detect circuit, power voltage --- Minimum
frequency was reached in the current releasing
control or short-circuit current (Idc) after direct
excitation was detected
Entire
stop
H02
Outdoor unit
compressor lock
Outdoor
Compressor circuit --- Compressor lock was detected. Entire
stop
H03
Outdoor unit current
detect circuit error
Outdoor
Current detect circuit, outdoor unit P.C. board ---
Abnormal current was detected in AC-CT or a phase
loss was detected.
Entire
stop
H04
Case thermostat
operation
Outdoor
Malfunction of the case thermostat
Entire
stop
H06
Outdoor unit low-
pressure system error Outdoor
Current, high-pressure switch circuit, outdoor P.C.
board --- Pressure sensor error was detected or low-
pressure protective operation was activated.
Entire
stop
L03
SIM
Duplicated header
indoor units
Indoor
Indoor address setting error --- There are two or more
header units in the group.
Entire
stop
L07
SIM
Group line in
individual indoor unit Indoor
Indoor address setting error --- There is at least one
group-connected indoor unit among individual indoor
units.
Entire
stop
L08
SIM
Indoor group address
not set
Indoor
Indoor address setting error --- Indoor address group
has not been set.
Entire
stop
L09
SIM
Indoor unit capacity
not set
Indoor
Indoor unit capacity has not been set.
Entire
stop
L10
SIM
Outdoor unit P.C.
board
Outdoor
In the case of outdoor P.C. board jumper wire (for
service) setting error
Entire
stop
L20
SIM
LAN communication
error
Network
adapter
central
control
Address setting, central control remote controller,
network adapter --- Duplication of address in central
control communication
Auto-
reset
L29
SIM
Other outdoor unit
error
Outdoor
Other outdoor unit error
Entire
stop
1) Communication error between IPDU MCU and
CDB MCU
Entire
stop
2) Abnormal temperature was detected by the heat
sink temp. sensor in IGBT.
L30
SIM
Abnormal external
input into indoor unit
(interlock)
Indoor
External devices, outdoor unit P.C. board ---
Abnormal stop due to incorrect external input into
CN80
Entire
stop
L31
SIM
Phase sequence
error, etc.
Outdoor
Power supply phase sequence, outdoor unit P.C.
board --- Abnormal phase sequence of the 3-phase
power supply
Operation
continued
(thermost
at OFF)
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
overflow detected
Indoor
Drain pipe, clogging of drainage, float switch circuit,
indoor P.C. board --- Drainage is out of order or the
float switch was activated.
Entire
stop
P12
ALT
The fan error 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
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
: Lighting
: Flashing
: OFF
: The air conditioner automatically enters the auto-address setting mode.
ALT: When two LEDs are flashing, they flash alternately. SIM: When two LEDs are flashing, they flash in synchronization.
Receiving unit display OR: Orange GR: Green
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 when 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
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
39-EN
40-EN
+00EH99878901_01EN.book Page 20 Wednesday, April 13, 2011 9:38 AM
