Daikin RQYQ140-180PY1 Service Manual page 76

Test Operation
[Remote controller displays malfunction code]
Malfunction
code
A*
Indoor unit of connecting remote controller is
C*
malfunction.
(Note)
E3, F4
The shutoff valve of the outdoor unit is left closed. Open the shutoff valve.
F3, UF
The phases of the power to the outdoor unit are
U1
reversed.
U3 Check operation has been completed normally.
U1
Power is not being supplied (including cases of
U4
open phase) to the outdoor or BS or indoor unit.
LC
A model which cannot be connected in a multi-
U7
outdoor-unit system has been connected in a multi-
UA
outdoor-unit system.
There is a problem with another BS and indoor unit
U9
within the same system.
UF Wrong wiring between units.
If an outdoor - outdoor transmission wire was
UF connected or disconnected during check
operation.
U4, U7
Wrong wiring between units.
UH, UF
DIP switch (DS1) setting is incorrect after the
PJ
outdoor unit PCB (A1P) was replaced.
Check operation cannot be continued by the low
P2
pressure drops.
Instruction to perform additional refrigerant
P8
charging during check operation (not a
PA
malfunction).
If any malfunction codes other than the above are displayed, check the service manual for how to respond.
67
Installation error Remedial action
Correct the malfunction by reference to installation manual
of indoor unit or operation manual of outdoor unit.
Exchange two of the three phases (L1, L2, L3) and connect
with the correct phase.
Perform the check operation again.
Supply power correctly to the outdoor, BS or indoor unit.
Change to individual piping, and disconnect the wiring from
the multi-outdoor-unit terminals (Q1, Q2)
A malfunction code is displayed on the remote controller, or
else trouble has occurred at BS and indoor unit where a
malfunction code is not displayed on the remote controller.
Correct the trouble at the corresponding BS and indoor unit.
If no malfunction code is displayed on the remote controller,
press the Inspection/Test button on the remote controller to
display the malfunction code.
Agree refrigerant system and connection wire between the
units.
Complete the transmission wiring work, then perform check
operation again.
Connect the interunit wiring (indoor - outdoor, outdoor -
outdoor, multi-outdoor-unit).
If voltage of 100V or higher was applied to the outdoor unit
PCB (A1P), the outdoor unit PCB or BS unit PCB may be
damaged. If the malfunction display "UH" appears even after
the connection was corrected, the PCB must be replaced.
Refer to Service Manual for details.
Follow the information on spare parts with a spare PCB of
outdoor unit and make the correct setting.
Check the following.
• All shutoff valves are open.
• Refrigerant tank is connected.
• Valve of refrigerant tank is open.
• Inlet or outlet of indoor unit are not closed due to a foreign
object.
Make the check operation by "1.2 Check Operation".
SiBE341001
Test Operation