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18
Trial operation
Procedure and summary of trial operation
(3) Cooling operation check
Start
Check each
indoor unit
consecutively.
Set the operation mode to COOL by
pushing the operation switch for 5
seconds or more, and then check “L”
is displayed.
Trial operation from outdoor
unit is also available.
Is there cool air discharge ?
Is air circulation good ?
Operate all the units concurrently.
Is temp. difference of suction/
discharge air good ?
Is the supply voltage good
(220V 240V) ?
Is the operation current within
±15% of the catalogue
current value ?
(Max. Hz operation)
Is the operation
pressure normal ?
Normal
Check operation status of the compressor.
This air conditioner is attached with
reactivation delay timer, so the operation
restarts 2 minutes 30 seconds after it
stopped.
Check louvre direction.
Check the supply power voltage.
Check power cable dia.
Check overload of indoor /outdoor temperature.
Check pipe length and refrigerant amount.
Check the compressor operation Hz, and outdoor fan
operation status.
Is there an abnormal sound of the compressor ?
(NOTE 3)
(NOTE 1)
(NOTE 2)
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
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