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Concealed Duct High Static Pressure
Installation Manual
Concealed Duct High Static Pressure
Installation Manual
n Error codes and parts to be checked
«
: The air conditioner automatically enters the auto-address setting mode.
Wired remote
controller
display
Indication
E01
E02
E03
E04
E08
E09
E10
E18
E31
F01
F02
F04
F06
F07
F08
F10
F12
F13
F15
F29
F31
H01
H02
H03
H04
H06
Main defective parts
No header remote controller
Remote controller communication error
Remote controller transmission error
Indoor unit-remote controller regular
communication error
Indoor unit-outdoor unit serial
communication error
IPDU-CDB communication error
Duplicated indoor addresses
«
Duplicated header remote controllers
CPU-CPU communication error
Header indoor unit-indoor follower unit
regular communication error
IPDU communication error
Indoor unit heat exchanger sensor
(TCJ) error
Indoor unit heat exchanger sensor (TC)
error
Outdoor unit discharge temp. sensor
(TD) error
Outdoor unit temp. sensor (TE/TS)
error
TL sensor error
Outdoor unit outside air temp. sensor
error
Indoor unit room temp. sensor (TA)
error
TS (1) sensor error
Heat sink sensor error
Temp. sensor connection error
Indoor unit, other P.C. board error
Outdoor unit P.C. board
Outdoor unit compressor breakdown
Outdoor unit compressor lock
Outdoor unit current detect circuit error
Case thermostat operation (1)
Outdoor unit low-pressure system error
Judging
device
Remote
controller
Remote
controller
Indoor
Indoor
Indoor
Remote
controller
Indoor
Indoor
Outdoor
Indoor
Indoor
Outdoor
Outdoor
Outdoor
Outdoor
Indoor
Outdoor
Outdoor
Outdoor
Indoor
Outdoor
Outdoor
Outdoor
Outdoor
Outdoor
Outdoor
Parts to be checked / error description
Incorrect remote controller setting – The header remote controller
has not been set (including two remote controllers).
No signal can be received from the indoor unit.
System interconnecting wires, indoor P.C. board, remote controller –
No signal can be sent to the indoor unit.
Remote controller, network adapter, indoor P.C. board – No data is
received from the remote controller or network adapter.
System interconnecting wires, indoor P.C. board, outdoor P.C. board.
– Serial communication error between indoor unit and outdoor unit
Indoor address setting error –
The same address as the self-address was detected.
Remote controller address setting error – Two remote controllers are
set as header in the double-remote controller control.
(∗ The header indoor unit stops raising alarm and follower indoor
units continue to operate.)
Indoor P.C. board – Communication error between main MCU and
motor microcomputer MCU
Indoor P.C. board –
Regular communication is not possible between header and follower
indoor units or between twin header (main) and follower (sub) units.
Communication error between IPDU and CDB
Heat exchanger sensor (TCJ), indoor P.C. board – Open-circuit or
short-circuit of the heat exchanger sensor (TCJ) was detected.
Heat exchanger sensor (TC), indoor P.C. board – Open-circuit or
short-circuit of the heat exchanger sensor (TC) was detected.
Outdoor temp. sensor (TD), outdoor P.C. board – Open-circuit or
short-circuit of the discharge temp. sensor was detected.
Outdoor temp. sensors (TE/TS), outdoor P.C. board – Open-circuit or
short-circuit of the heat exchanger temp. sensor was detected.
TL sensor may be displaced, disconnected or short-circuited.
Outdoor temp. sensor (TO), outdoor P.C. board – Open-circuit or
short-circuit of the outdoor air temp. sensor was detected.
Room temp. sensor (TA), indoor P.C. board – Open-circuit or short-
circuit of the room temp. sensor (TA) was detected.
TS (1) sensor may be displaced, disconnected or short-circuited.
Abnormal temperature was detected by the temp. sensor of the IGBT
heat sink.
Temp. sensor (TE/TS) may be connected incorrectly.
Indoor P.C. board – EEPROM error
Outdoor P.C. board – In the case of EEPROM error.
Current detect circuit, power voltage –
Minimum frequency was reached in the current releasing control or
short-circuit current (Idc) after direct excitation was detected
Compressor circuit – Compressor lock was detected.
Current detect circuit, outdoor unit P.C. board – Abnormal current
was detected in AC-CT or a phase loss was detected.
Malfunction of the case thermostat.
Current, high-pressure switch circuit, outdoor P.C. board –
Ps pressure sensor error was detected or low-pressure protective
operation was activated.
Air
conditioner
status
∗
∗
Auto-reset
Auto-reset
Auto-reset
∗
Auto-reset
Auto-reset
Entire stop
Auto-reset
Auto-reset
Entire stop
Entire stop
Entire stop
Operation
continued
Auto-reset
Entire stop
Entire stop
Entire stop
Auto-reset
Entire stop
Entire stop
Entire stop
Entire stop
Entire stop
Entire stop
Wired remote
controller
display
Indication
L03
L07
L08
L09
L10
L20
L29
L30
L31
P01
P03
P04
P05
P07
P10
P15
P19
P20
P22
P26
P29
P31
Main defective parts
Duplicated header indoor units
«
Group line in individual indoor unit
«
Indoor group address not set
«
Indoor power level not set
Outdoor unit P.C. board
LAN communication error
Other outdoor unit error
Abnormal external input into
indoor unit (interlock)
Phase sequence error, etc.
Indoor unit fan error
Outdoor unit discharge temp. error
Outdoor unit high-pressure system
error
Open phase detected
Heat sink overheat
Indoor unit water overflow
detected
Gas leakage detected
4-way valve error
High-pressure protective operation
Outdoor unit fan error
Outdoor unit inverter Idc activated
Outdoor unit position error
Other indoor unit error
Judging
device
Indoor
Indoor
Indoor
Indoor
Outdoor
Network
adapter
central control
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Outdoor
Outdoor
Outdoor
Indoor
Outdoor
Outdoor
(Indoor)
Outdoor
Outdoor
Outdoor
Outdoor
Indoor
Parts to be checked / error description
Indoor address setting error –
There are two or more header units in the group.
Indoor address setting error – There is at least one group-connected
indoor unit among individual indoor units.
Indoor address setting error – Indoor address group has not been set.
Indoor power level has not been set.
In the case of outdoor P.C. board jumper wire (for service) setting error.
Address setting, central control remote controller, network adapter
– Duplication of address in central control communication.
Other outdoor unit error Entire stop
1) Communication error between IPDU MCU and CDB MCU
2) Abnormal temperature was detected by the heat sink temp.
sensor in IGBT.
External devices, outdoor unit P.C. board – Abnormal stop due to
incorrect external input into CN80
Power supply phase sequence, outdoor unit P.C. board
– Abnormal phase sequence of the 3-phase power supply
Indoor fan motor, indoor P.C. board – Indoor AC fan error
(fan motor thermal relay activated) was detected.
An error was detected in the discharge temp. releasing control.
High-pressure switch – The IOL was activated or an error was
detected in the high-pressure releasing control using the TE.
The power supply wire may be connected incorrectly.
Check open phase and voltages of the power supply.
Abnormal temperature was detected by the temp. sensor of the IGBT
heat sink.
Drain pipe, clogging of drainage, float switch circuit, indoor P.C. board
– Drainage is out of order or the float switch was activated.
There may be gas leakage from the pipe or connecting part.
Check for gas leakage.
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.
High-pressure protection
Outdoor unit fan motor, outdoor unit P.C. board – An error (overcurrent,
locking, etc.) was detected in the outdoor unit fan drive circuit.
IGBT, outdoor unit P.C. board, inverter wiring, compressor
– Short-circuit protection for compressor drive circuit devices
(G-Tr/IGBT) was activated.
Outdoor unit P.C. board, high-pressure switch
– Compressor motor position error was detected.
Another indoor unit in the group is raising an alarm.
E03/L07/L03/L08 alarm check locations and error description
Air
conditioner
status
Entire stop
Entire stop
Entire stop
Entire stop
Entire stop
Auto-reset
Entire stop
Entire stop
Operation
continued
(thermostat
OFF)
Entire stop
Entire stop
Entire stop
Entire stop
Entire stop
Entire stop
Entire stop
Auto-reset
(Auto-reset)
Entire stop
Entire stop
Entire stop
Entire stop
Entire stop
Auto-reset
– 39 – – 40 –