Self-diagnostics table
The LEDs light as follows according to the status of the sensor unit.
OPERATION
ALARM
LED
LED
Blinking
(Green)
(Red)
0.5 seconds
Simultaneously
Alternately
Test run
● After installation is complete, use the following procedure to confi rm that the sensor unit is operating properly.
Turn ON the power of the indoor unit
Preparing
YES
Monitoring
(1 minute after preparation starts)
YES
There is an abnormality with the sensor
(3 seconds after monitoring starts)
NO
There is a leakage
(10 seconds after monitoring starts)
NO
Status
-
Monitoring
The normal status.
The unit is preparing to operate. Preparation continues for 1 minute after
-
Preparing
the power is turned ON. Preparation continues for more than 1 minute if
the initialising communication with the indoor unit cannot be achieved.
Refrigerant is leaking. Start ventilating immediately.
Leaking
A specialist should identify the location of the leakage and take
interval
immediately corrective measures.
There is an abnormality with the sensor unit. It may be unable to detect
-
Abnormal
refrigerant leakage so you should contact our sales/service team or an
authorised dealer.
Multiple
Multiple sensor units have been connected to one indoor unit. Refer to
detections
the "Basic wiring diagram" (P.8) and connect the unit correctly.
made
The sensor PCB has reached the end of its service life. Contact our
Service life
sales/service team or an authorised dealer to arrange for replacement of
exceeded
the sensor PCB.
The part number for the replacement sensor PCB is ACPE05C0052.
Power is not being supplied.
NO
Check the wiring with the indoor unit.
The unit is not communicating with the indoor unit.
NO
Check the wiring with the indoor unit.
There is an abnormality with the sensor unit. Check the connections of the
YES
connectors on the sensor PCB. Also, replace the product or the parts as
necessary.
There may be a refrigerant leakage.
Ensure that the room is suffi ciently ventilated and confi rm the relevant
YES
areas. Also check that there is no leakage of fl ammable gases in the
vicinity.
: On
: Off
Operation checks complete
: Blinking (1 seconds interval)
Solution
11