-
112
-
'19 • PAC-SM-312
'09•SRK-DB-087D
When a heat exchanger sensor 1 wire disconnection is detected while
operation is stopped. (If a temperature of –28ºC or lower is detected for
15 seconds, it is judged that the wire is disconnected.)
(Not displayed during operation.)
When a room temperature sensor wire disconnection is detected while
operation is stopped. (If a temperature of –45ºC or lower is detected for
15 seconds, it is judged that the wire is disconnected.)
(Not displayed during operation.)
• Broken heat exchanger sensor
1 wire, poor connector
-
-
-
connection
• Indoor unit PCB is faulty
• Broken room temperature
sensor wire, poor connector
connection
• Indoor
unit
PCB is faulty
Heat exchanger
sensor 1 error
Room
temperature
sensor error
When conditions for turning the indoor unit’s fan motor on exist during air-
conditioner operation, an indoor unit fan motor speed of 300 min
-1
or lower is
• Defective fan motor
, poor
connector connection
Indoor fan
motor error
–55ºC or lower is detected for 5 seconds continuously 3 times within
40 minutes after initial detection of this anomalous temperature.
Or –55ºC or lower is detected for within 20 seconds after power ON.
(The compressor is stopped.)
–55ºC or lower is detected for 5 seconds continuously 3 times within
40 minutes after initial detection of this anomalous temperature.
Or –55ºC or lower is detected for within 20 seconds after power ON.
(The compressor is stopped.)
• Broken heat exchanger sensor
wire, poor connector
connection
• Outdoor
unit
PCB is faulty
Outdoor heat
exchanger
sensor error
–25ºC or lower is detected for 5 seconds continuously 3 times within 40
minutes after initial detection of this anomalous temperature.
(The compressor is stopped.)
• Broken dischar
ge pipe sensor
wire, poor connector
connection
• Outdoor PCB is faulty
Dischar
ge pipe
sensor error
The compressor output current exceeds the set value during comp
ressor
start.
(The air-conditioner stops.)
•
,
Compressor
locking, open pha
se
on compressor output, short-
circuit on power transistor
service valve is closed
Current cut
If the power transistor primary current exceeds the setting value for 3
seconds, the compressor stops.
• Defective compressor
• Outdoor unit PCB is faulty
Compressor
startup failure
When discharge pipe temperature anomaly is detected 2 times within
60 minutes is compressor stop.
• Installation, operation status
• Discharge pipe temperature sensor
• Outdoor unit PCB is faulty
Discharge pipe
temperature
error
When there is no signal between the indoor unit PCB and outdoor unit
PCB for 10 seconds or longer (when the power is turned on), or when
there is no signal for 7 minute 35 seconds or longer (during operation)
(the compressor is stopped).
• Defective power source
,
Broken signal wire, defective
indoor/outdoor PCB
Error of signal
transmission
If it fails again to detect the rotor position after shifting to the
compressor rotor position detection operation, the compressor stops.
• Defective compressor
• Operation status
• Installation status
Compressor
rotor lock error
When the outdoor fan motor speed continues for 30 seconds or longer
at 75 min
-1
or lower. (3 times) (The air-conditioner stops.)
• Defective fan motor
, poor
connector connection
Outdoor fan
motor error
Indoor unit display panel
Description
of trouble
Cause
Display (flashing) condition
When the compressor command speed is lower than the set value a
nd
the current safe has operated. (the compressor stops)
• Overload operation
• Overchar
ge
• Compressor locking
Current safe
stop
If the output current of inverter exceeds the specifications, it makes the
compressor stopping. (In heating mode).
• Service valve (gas side) closed
• Defective outdoor
unit
PCB
Service valve
(gas side)
closed opertion
• Power transistor error
(Outdoor unit PCB is faulty)
Power
transistor
anomaly
When a heat exchanger sensor 2 wire disconnection is detected while
operation is stopped. (If a temperature of –28ºC or lower is detected for
15 seconds, it is judged that the wire is disconnected.)
(Not displayed during operation.)
• Broken heat exchanger sensor
2 wire, poor connector
connection
• Indoor
unit
PCB is faulty
Heat exchanger
sensor 2 error
When the value of the outdoor heat exchanger sensor exceeds the
set
value.
• Installation, operation status
• Outdoor heat exchanger
temperature sensor
• Outdoor unit PCB is faulty
Cooling
overload
operation
Error is displayed if the converter voltage exceeds target voltage (3 times
within 20 minutes). Remote control may be set after 3-minute delay.
Error is displayed if the converter voltage is lower than 210V.
• Outdoor unit PCB is faulty
Active filter
voltage error
When the insufficient refrigerant amount is detected 3 times within 60
minutes.
Insufficient refri-
gerant amount or
detection of servi-
ce valve closure
ON
ON
ON
2-time
flash
4-time
flash
1-time
flash
2-time
flash
5-time
flash
6-time
flash
2-time
flash
7-time
flash
TIMER
light
3-time
flash
4-time
flash
ON
Keeps
flashing
ON
ON
1-time
flash
2-time
flash
6-time
flash
Keeps
flashing
Keeps
flashing
ON
ON
ON
ON
2-time
flash
ON
RUN
light
ON
ON
3-time
flash
ON
5-time
flash
7-time
flash
E 16
• Broken outdoor air temp.
sensor wire, poor connector
connection
• Outdoor
unit
PCB is faulty
Outdoor air
temperature
sensor error
1-time
flash
Keeps
flashing
E 38
E 37
E 39
E 42
E 59
E 36
E 5
E 60
E 40
E 47
E 48
E 35
The wired remote control wire Y is open. The wired remote
control wires X and Y
are reversely connected. Noise is penetrating
the wired remote control lines. The wired remote control or indoor unit
PCB is faulty
. (The communications circuit is faulty.)
• Broken wired remote control
-
wire, defecti
v
e indoor unit
PCB
Error of wired
remote control
wiring
—
—
E 1
E 58
E 51
Wired
(2)
remote
control
display
E 57
—
—
—
(5) Self-diagnosis table
measured for 30 seconds or longer. (The air-conditioner stops.)
7-time
flash
1-time
flash
If compressor fails to startup for 42 times.
