Daikin REYQ8-48PY1B, Service Manual

Page: 182 / 477

Test Operation SiBE37-701_B
171 Test Operation
[Remote controller heating mode malfunction code]
6. After completing the additional refrigerant charging, record the charging amount on the
accessory “REQUEST FOR THE INDICATION” 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, refer to [Important information regarding
the refrigerant used] in “
Special notice of product ” on page 163.
1.2.5.2.2 Procedure of check operation
z
Check operation perform the following work. Do the check operation following below.
Otherwise, malfunction code “U3” will be displayed in the remote controller and normal
operation can not be carried out.
„
Check of stop valve opening
„
Check of wrong wiring
„
Judgment of piping length
„
Check of refrigerant overcharge
Note:
z
Check operation can not carried out at outdoor temp. less than –5°C.
Perform the check operation at day or time that outdoor temp. is –5°C or more.
[Check Operation Procedure]
(1) Close the EL. COMPO. BOX (1) lid and all front panels except as the side of the EL.
COMPO. BOX (1) 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 crankcase heater.)
(2) Make the onsite settings as needed using the push button (BS1-BS5) on the outdoor unit
PCB (A1P) with the power on. (See “ Field setting from outdoor unit ” on page 207)
(3) Perform the check operation following the Check Operation Method of the [Service
Precautions] label (lower) on the EL. COMPO. BOX (1) lid (see figure below). The 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.
Note: For interrupting the check operation, push RETURN button (BS3).
Code The work contents
P8
Close the valve A immediately and push the TEST button (BS4) once. And restart from procedure (7) of
“In case of heating mode”.
P2
Operation is interrupted. Close the valve A immediately and check the below items.
z
Check if HP/LP gas pipe, suction gas pipe or liquid pipe stop valve is opened.
z
Check the refrigerant tank is connected and the valve A was opened.
z
Check if the air inlet and outlet of the indoor unit are not closed by an obstruction.
EL. COMPO.BOX (2) lid
EL. COMPO.BOX (1) lid
[Service Precaution] label (upper)
[Service Precaution] label (lower)