-
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'15 • SR-T-185
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 discon-
nected.) (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 disco-
nnected.) (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
Description
of trouble
Cause
Display (flashing) condition
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 discon-
nected.)(Not displayed during operation.)
• Broken heat exchanger sensor
2 wire, poor connector
connection
• Indoor PCB is faulty
Heat exchanger
sensor 2 error
Wired
(2)
remote
control
display
—
—
—
• Defective drain pump (DM),
broken drain pump wire
• Anomalous float switch operation
Defective indoor PCB faulty
Drain trouble
E 9
When conditions for turning the indoor unit’s fan motor on exist during air
-conditioner operation, an indoor unit fan motor speed of 300min
-1
• 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.)
If the float switch OPEN is defected for 3 seconds
continuously or if float switch connector or wire is
disconnected.
•
,
Compressor locking, open phase
on compressor output, short
circuit on power transistor
service valve is closed
Current cut
When there is an emergency stop caused by trouble in the
outdoor unit, 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 source,
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 min
-1
or lower. (3 times) (The air
-conditioner stops.)
• Defective fan motor, poor
connector connection
Outdoor fan
motor error
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 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 PCB is faulty. (The communications circuit is faulty.)
• Broken wired remote control
wire, defective indoor PCB
Error of wired
-
remote control
wiring
• Broken power transistor
Power
transistor 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 source.
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
E 16
• Broken outdoor air temp.
sensor wire, poor connector
connection
• Outdoor PCB is faulty
Outdoor air
temperature
sensor error
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
E 57
or lower is measured for 30 seconds or longer. (The air-conditioner stops.)
Indoor unit display panel
ON
ON
TIMER
light
ON
1-time
flash
2-time
flash
RUN
light
3-time
flash
(5) Self-diagnosis table
ON
4-time
flash
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
3-time
flash
—
4-time
flash
Keeps
flashing
ON
ON
6-time
flash
Keeps
flashing
Keeps
flashing
ON
ON
ON
ON
2-time
flash
ON
—
ON
ON
ON
5-time
flash
7-time
flash
1-time
flash
Keeps
flashing
