Daikin VRV III REMQ72PBYD, Engineering Data

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EDUS391004-N Installation
Installation of Outdoor Units 63
[Remote controller cooling mode malfunction code]
[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.
11-2-2 Procedure of check operation
• 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 shutoff valve opening

Check of miswiring

Judgment of piping length

Check of refrigerant overcharge
NOTE
• Check operation can not carried out at outdoor temp. less than 23°F.
Perform the check operation at day or time that outdoor temp. is
23°F or more.
[Check Operation Procedure]
(1) Close the electrical components box lid and all front panels except
as the side of the electrical components box and turn on the power
to the outdoor unit and all connected 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 outdoor unit PC-board (A1P) with the power on. (See
“12. 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 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.
(Refer to figure 32)
1. Electrical components box (1) lid
2. (Only RXYQ~PBYD and RXYQ144PBTJ)
Electrical components box (2) lid
3. [Service Precaution] label (upper)
4. [Service Precaution] label (lower)
NOTE
For interrupting the check operation, push RETURN button (BS3).
[Remote controller displays malfunction code]
NOTE
If any malfunction codes other than the above are displayed, check
the service manual for how to respond.
Code The work contents
PE Charging is almost finished. Ready to close the valve A.
PA
PH
The refrigerant tank is empty. Close the valve A and replace
empty tank to the new tank. After changing the tank, open
the valve A again.
Beware the fan running. The outdoor unit does
not stop operation.
P8
Close the valve A immediately, and restart the operation
from procedure (3).
P2
Operation is interrupted. Close the
valve A immediately and check the
below items.
• Check if gas pipe or liquid pipe
shutoff valve is opened.
• Check the refrigerant tank is con-
nected and the valve A was
opened.
• Check if the air inlet and outlet of
the indoor unit are not closed by
an obstruction.
After correcting the
abnormality, restart
the operation from
procedure (3).

Operation is stopped abnormally.
Close the valve A immediately. Con-
firm the malfunction code and correct
the abnormality following the
[Remote controller displays malfunc-
tion code] in chapter 11-2-2.
P9
Charging is finished. Close the valve A and take the refrig-
erant tank off.
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.
• Check if gas pipe or liquid pipe shutoff valve is opened.
• Check the refrigerant tank is connected and the valve
A was opened.
• Check if the air inlet and outlet of the indoor unit are
not closed by an obstruction.
Malfunction
code
Installation error Remedial action
E3, E4
F3, F6
UF
The shutoff valve of the
outdoor unit is left closed.
Open the shutoff valve.
U1
The phases of the power to
the outdoor unit is reversed. Exchange two of the three phases (L1,
L2, L3) to make a proper connection.
U1
U4
LC
No power is supplied to an
outdoor or indoor unit
(including phase
interruption).
Make sure the power source wire is
properly connected to the outdoor or
indoor unit and revise if necessary.
UF
There is conflict on the
connection of transmission
wiring in the system. Check if the refrigerant piping line and
the transmission wiring are consistent
with each other.
E3
F6
UF
Refrigerant overcharge.
Recalculate the additional amount
refrigerant from the piping length and
correct the refrigerant charge level by
recovering any excessive refrigerant
with a refrigerant recovery machine.
E4
F3
Insufficient refrigerant.
• Check if the additional refrigerant
charge has been finished correctly.
• Recalculate the additional amount
refrigerant from the piping length and
add the adequate amount.
U7, U4
UF, UH
Field wiring is connected to
"TO MULTI UNIT (Q1, Q2)"
terminal on the outdoor unit
PC-board (A1P) when the
system is one outdoor system.
Remove the line from the “TO MULTI
UNIT (Q1, Q2)” terminal.
3P215731-10R