Daikin RXYQ96PYDN Service Manual page 104

SiUS34-801A_b
[Remote controller displays malfunction code]
Malfunction code Installation error
E3, E4
F3, F6
UF
U1
U1
U4
LC
UF
E3
F6
UF
E4
F3
U7, U4
UF, UH
Note:
If any malfunction codes other than the above are displayed, check the service manual for how to
respond.
10.2.6 Onsite Settings
Note: In the case of a multi system, all onsite settings should be made on the master unit. Settings made
on sub units are invalid.
The outside unit to which the indoor unit transmission wire is connected is the master unit, and all
other units are sub units.
Use the push button switches (BS1 through BS5) on the outside unit PC-board (A1P) to make the
necessary onsite settings.
See the [Service Precautions] label (upper) on the Electrical Componets Box lid for details on the
positions and operating method of the push button switches and on the onsite setting.
Make sure to record the setting on the accessory [REQUEST FOR THE INDICATION] label.
WARNING
Use an insulated rod to operate the push buttons via the inspection door of Electrical Componets
Box lid.
There is a risk of electric shock if you touch any live parts as operation must be performed with the
power on.
10.2.7 Test Run
10.2.7.1 Before test run
VRVIII R-410A Heat Pump 60Hz
The shutoff valve of the outside unit is left closed.
The phases of the power to the outside unit is
reversed.
No power is supplied to an outside, BS or indoor
unit (including phase interruption).
There is conflict on the connection of transmission
wiring in the system.
Refrigerant overcharge.
Insufficient refrigerant.
Field wiring is connected to TO MULTI UNIT
(Q1,Q2) terminal on the outside unit PC-board (A1P)
when the system is one outdoor system.
Electric Shock Warning
Make sure the following works are completed in accordance with the installation manual.
Piping work
Wiring work
Air tight test
Vacuum drying
Additional refrigerant charge
Check operation
Check that all work for the BS and indoor units is finished, and that it is safe to operate.
Remedial action
Open the shutoff valve.
Exchange two of the three phases (L1, L2, L3) to make a proper
connection.
Make sure the power source wire is properly connected to the out-
side, BS or indoor unit and revise if necessary.
Check if the refrigerant piping line and the transmission wiring are
consistent with each other.
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.
• Check if the additional refrigerant charge has been finished cor-
rectly.
• Recalculate the additional amount
refrigerant from the piping length and add the adequate amount.
Remove the line from the TO MULTI UNIT (Q1, Q2) terminal.
Test Operation
89