Checking In Normal Operation - Daikin RQYQ140-180PY1 Service Manual

SiBE341001
1.3

Checking in Normal Operation

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<Important information when checking normal operation>
• If any abnormal noise occurs due to liquid compression in the compressor or another cause,
• For approximately 5 minutes after the compressor is stopped, the compressor will not start
• Pump-down residual operation may occur for up to 5 minutes at the outdoor unit after
• Outdoor unit fan low speed operation may also occur if the Night-time low noise setting or
• If check operation after installation was not performed by pressing the TEST button, or if the
Test Operation
After check operation ends, start normal operation.
(Heating is not possible if the outdoor temperature is 24°C or higher.)
Check that the indoor and outdoor units are operating correctly.
(If any abnormal noise occurs due to liquid compression in the compressor or another
cause, stop operation immediately. Then energize the crankcase heater for a sufficient
period of time before restarting operation.)
Start the indoor units one by one. Verify that the corresponding outdoor unit is operating.
Verify that cool air (or warm air) is being discharged by the indoor unit.
Press the airflow direction button and airflow rate button of the indoor unit and verify their
operation.
stop operation immediately. Then energize the crankcase heater for a sufficient period of
time before restarting operation.
even when the START/STOP buttons at indoor units in that system are pressed.
operation was stopped from the remote controller.
the External low-noise setting is used.
check operation was not completed normally, error code "U3" appears and normal operation
is not possible. Be sure to follow the instructions in "1-2. Check Operation" and complete the
check operation procedure.
Test Operation
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