-
46
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(5)
Self-diagnosis table
When this air conditioner performs an emergency stop, the reason why the emergency stop occurred is displayed by the flashing of
display lights. If the air conditioner is operated using the remote control 3 minutes or more after the emergency stop, the trouble
display stops and the air conditioner resumes operation.
(1)
Notes (1) The air conditioner cannot be restarted using the remote control for 3 minutes after operation stops.
(2) The wired remote control is optional parts.
Indoor unit
display panel
Description
of trouble
Cause
Display (flashing) condition
Run
light
Timer
light
6 time
flash
ON
When there is no signal between the indoor unit’s board and outdoor
unit’s board for 10 seconds or longer (when the power is turned on), or
when there is no signal for 1 minute 50 seconds or longer (during
operation)(the compressor is stopped).
When a heat exchanger sensor wire disconnection is detected while
operation is stopped. (If a temperature of –20
o
C or lower is detected for
3 minutes, 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 –20
o
C or lower is detected for
15 seconds, it is judged that the wire is disconnected.) (Not displayed
during operation.)
●
Defective power supply,
Broken signal wire,
defective in/outdoor unit
boards
●
Broken heat exchanger
sensor wire, poor connector
connection
●
Broken room temperature
sensor wire, poor connector
connection
Error of signal
transmission
Heat exchanger
sensor 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 measured for 30 seconds or longer. (The air conditioner stops.)
When the value of the discharge pipe sensor exceeds the set value.
(The air conditioner stops.)
●
Defective fan motor, poor
connector connection
●
Gas shortage, defective
discharge pipe sensor,
closed service valve
Indoor fan
motor error
Over heat of
compressor
When a sensor wire disconnection is detected while operation is
stopped. (If a temperature of –64
o
C or lower is detected for 15 seconds,
it is judged that the wire is disconnected.) (Not displayed during
operation.)
●
Broken heat exchanger
sensor wire, poor connector
connection
Outdoor heat
exchanger
sensor error
When an outdoor air temperature sensor wire disconnection is detected
while operation is stopped. (If a temperature of –64
o
C or lower is
detected for 15 seconds, it is judged that the wire is disconnected.) (Not
displayed during operation.)
●
Broken outdoor air temp.
sensor wire, poor connector
connection
Outdoor air
temperature
sensor error
After the compressor has operated for 9 minutes continuously, if there
is a disconnected signal for the discharge pipe temperature sensor
detected -64
o
C for 15 seconds.
●
Broken discharge pipe
sensor wire, poor connector
connection
Discharge pipe
sensor error
When the indoor heat exchanger temperature does not fall to 25
o
C or
below for 40 minutes after 5 minutes have elapsed since the compressor
operation start.
●
Broken compressor wire
●
Broken discharge pipe
sensor wire, poor connector
connection
●
Compressor blockage
Abnormality of
outdoor unit
ON
1 time
flash
ON
2 time
flash
ON
ON
6 time
flash
5 time
flash
2 time
flash
Keeps
flashing
4 time
flash
Keeps
flashing
1 time
flash
Keeps
flashing
2 time
flash
ON
E 5
E 6
E 7
E 16
E 36
E 37
E 38
E 39
E 59
E 1
Wired
remote
control
display
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 control PCB is
faulty. (The communications circuit is faulty.)
●
Broken wired remote control
wire, defective indoor unit
boards
Error of wired
remote control
wiring
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