Daikin RXYQ96PYDN, Service Manual

Page: 249 / 567

Test Operation SiUS34-801A_b
234 VRVIII R-410A Heat Recovery 60Hz
10.2.6.2.2 Procedure of check operation
Conduct the following check operations or malfunction code [U3] will be displayed in the remote
controller and normal operation cannot be carried out:
Check shutoff valve opening
Check for miswiring
Judgment of piping length
Check refrigerant overcharge
Note:
Check operation can not be carried out at an outdoor temperature less than 23°F.
Perform the check operation at a day or time that the outdoor temperature is 23°F or more.
[Check Operation Procedure]
(1) Close the Electrical Components Box lid and all front panels except the side, and turn on the
power to the outside unit and all connected BS, indoor units. Be sure to turn the power on at
least 6 hours before operation in order to have power running to the crank case heater.
(2) Make the onsite settings as needed using the push button (BS1-BS5) on the outside unit PC-
board (A1P) with the power on. (See 10.2.7 Onsite Settings )
(3) Perform the check operation following the Check Operation Method of the [Service Precautions]
label (lower) on the Electrical Components Box lid. (See figure 32) The system operates for
about 40~60 minutes and then automatically stops the check operation. If the malfunction code
is not displayed in the remote controller after the system stops, check operation is completed.
Normal operation will be possible after 5 minutes. If the malfunction code is displayed in the
remote controller, correct the malfunction following [Remote controller displays malfunction
code] and perform the check operation again.
Note:
For interrupting the check operation, push the RETURN button (BS3).
[Service Precaution] label (upper)
[Service Precaution] label (lower)
EL. COMPO.BOX (1) lid EL. COMPO.BOX (2) lid
figure 32
EL. COMPO.BOX (1) lid
EL. COMPO.BOX (2) lid
[Service Precaution] label (upper)
[Service Precaution] label (lower)
REYQ72~120PYDN
REYQ72~144PTJU REMQ72~120PYDN
REMQ72~120PTJU