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71
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'10 • SRK-T-098
'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 PCB is faulty
• Broken room temperature
sensor wire, poor connector
connection
• Indoor 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 rpm 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 higher 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 higher is detected for within 20 seconds after power ON.
(The compressor is stopped.)
• Broken heat exchanger sensor
wire, poor connector
connection
• Outdoor 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 discharge pipe sensor
wire, poor connector
connection
• Outdoor PCB is faulty
Discharge pipe
sensor error
The compressor output current exceeds the set value during compressor
start.
(The air conditioner stops.)
•
,
Compressor locking, open phase
on compressor output, short
circuit on power transistor
service valve is closed
Current cut
gency stop caused by trouble in the outdoor unit,
When there is an emer
or the input current value is found to be lower than the set value.
(The air conditioner stops.)
When the power transistor is judged breakdown while compressor
starts.
(The compressor is stopped.)
• Broken compressor wire
• Compressor blockage
Trouble of
outdoor unit
When the value of the discharge pipe sensor exceeds the set value.
(The air conditioner stops.)
• Gas shortage, defective
discharge pipe sensor, service
valve is closed
Over heat of
compressor
When there is no signal between the indoor PCB and outdoor 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 supply,
Broken signal wire, defective
indoor/outdoor PCB
Error of signal
transmission
If the compressor motor’s magnetic pole positions cannot be correctly
detected when the compressor starts.
(The air conditioner stops.)
• Defective compressor
• Open phase on compressor
• Defective outdoor PCB
• Service valve is closed.
• Refrigerant is insufficient
Rotor lock
When the outdoor unit’s fan motor speed continues for 30 seconds or
longer at 75 rpm 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 and
the current safe has operated. (the compressor stops)
• Overload operation
• Overcharge
• Compressor locking
Current safe
stop
The wired remote controller wire Y is open. The wired remote
controller wires X and Y are reversely connected. Noise is penetrating
the wired remote controller lines. The wired remote controller or indoor
PCB is faulty. (The communications circuit is faulty.)
• Broken wired remote controller
wire, defective indoor PCB
Error of wired
remote controller
wiring
• Broken power transistor
Power
transistor
error
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 PCB is faulty
Heat exchanger
sensor 2 error
When the value of the outdoor heat exchanger sensor exceeds the set
value.
• Overload operation, overcharge
• Broken outdoor heat exchange
sensor wire
• Service valve is closed
Cooling high
pressure
protecton
When the wrong voltage connected for the power supply.
When the outdoor PCB is faulty.
• Defective active filter
Active filter
voltage error
When refrigeration cycle system protective control operates.
Refrigeration
cycle system
protective
control
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 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 47
E 48
E 35
E 1
E 58
E 51
Wired
(2)
remote
controller
display
E 57
—
—
—
10.5 Self-diagnosis table
measured for 30 seconds or longer. (The air conditioner stops.)
