Daikin RXYQ96PYDN Service Manual page 250

SiUS34-801A_b
[Remote controller displays malfunction code]
Malfunction
code
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 proper procedure.
10.2.7 Onsite Settings
Note:
In the case of a multi system, all onsite settings should be made on the master unit. Settings made
on subunits are invalid.
The outside unit to which the indoor unit transmission wires are connected is the master unit, and
all other units are subunits.
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 Components Boxlid 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 the Electrical
Components Box lid.
Avoid touching any live parts as this operation takes place with the power on.
10.2.8 Test Run
10.2.8.1 Before test run
VRVIII R-410A Heat Recovery 60Hz
Installation error
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 unit is finished and that there is no danger 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 outside, 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 correctly.
Recalculate the additional refrigerant amount from the
piping length and add the adequate amount.
Remove the line from the TO MULTI UNIT (Q1,Q2)
terminal.
Test Operation
235