Checking In Normal Operation - Daikin VRV II-Q RQYQ8-48PY1B Service Manual

SiBE341027
1.3

Checking in Normal Operation

After check operation ends, start normal operation.
(Heating is not possible if the outdoor air temperature is 24°C or higher.)
• Check that the indoor and outdoor units are operating normally.
(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.
<Important information when checking normal operation>
• 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.
• For approximately 5 minutes after the compressor is stopped, the compressor will not start even when the
ON/OFF buttons at indoor units in that system are pressed.
• Pump down residual operation may occur for up to 5 minutes at the outdoor unit after operation was
stopped from the remote controller.
• Outdoor unit fan low speed operation may also occur if the Low night noise setting or the External low
noise setting is used.
• If check operation after installation was not performed by pressing the TEST button, or if the check
operation was not completed normally, error code "
Be sure to follow the instructions in "1-2. Check Operation" and complete the check operation procedure.
Test Operation
U3
" is displayed and normal operation is not possible.
Test Operation
67