Daikin VRV III REYQ8PY1 Service Manual page 173

Test Operation
STEP 5 After completing the additional refrigerant charging, record the charging amount on
1.2.5.2.2 Procedure of check operation
Note:
Perform the check operation at day or time that outdoor temp. is -5°C or more.
[Check Operation Procedure]
STEP 1 Close the EL. COMPO. BOX lid and all front panels except as the side of the EL.
STEP 2 Make the onsite settings as needed using the push button (BS1-BS5) on the outdoor
STEP 3 Perform the check operation following the Check Operation Method below. The
Note:
For interrupting the check operation, push RETURN button (BS3).
Check operation method
Note: Make sure to open the equalizer (only for Multi system), suction pipe, dual pressure gas
• In the check operation, the following works will be automatically performed.
Check of miswiring / Check of shutoff valve opening / Check of refrigerant overcharge /
Judgment of piping length
• Make sure to carry out the check operation after the first installation.
Otherwise, the malfunction code "U3" will be displayed in the remote controller and normal
operation cannot be carried out.
When the check operation is finished normally, normal operation can be carried out after 5
minutes.
• For Multi system, check the setting and result on the master unit.
• The abnormality of each indoor unit can not be checked. After the check operation is finished,
check the indoor units individually by normal operation using the remote controller.
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the accessory "REQUEST FOR THE INDICATON" label (Installation records) and
adhere it to the back side of the front panel. Also, record the factory charged
refrigerant amount, additional refrigerant amount in the field and total refrigerant
amount of the system to "ADDITIONAL REF. CHARGE" label and adhere in the
proximity of the refrigerant charge port. About "ADDITIONAL REF. CHARGE" label.
Check operation perform the following work. Do the check operation following below.
Otherwise, malfunction code "U3" will be displayed in the remote controller and nomal
operation can not be carried out.
• Check of shutoff valve opening
• Check of miswiring
• Judgment of piping length
• Check of refrigerant overcharge
Check operation can not carried out at outdoor temp. less than -5°C.
COMPO. BOX and turn on the power to the outdoor 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.)
unit PC board (A1P) with the power on. (See "1.2.6 Onsite Settings")
system operation for about 40~60 minutes and automatically stops the check
operation.
If the malfunction code is not displayed in the remote controller after the system stop,
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.
pipe and liquid pipe shutoff valves completely.
Si37-701
Test Operation