Daikin VRV III RXYQ-PY1K, Руководство по установке, Страница: 31 / 34

RXYQ8~1 RXYQ8~12P7YLK
VRVIII System air conditioner
4PW41760-1
Installation manual
28
Correcting after abnormal completion of the test operation
The test operation is only completed if there is no malfunction code
displayed on the remote controller. In case of a displayed malfunction
code, perform the following actions to correct the abnormality:
■
Confirm the malfunction code on the remote controller
■
After correcting the abnormality, press the button
and reset the malfunction code.
■
Carry out the test operation again and confirm that the
abnormality is properly corrected.
13. S
ERVICE MODE OPERATION
Vacuuming method
At the first installation, this vacuuming is not required. It is required
only for repair purposes.
1 When the unit is at standstill and under the setting mode 2, set
the required function B (refrigerant recovery operation/
vacuuming operation) to
(ON).
- After this is set, do not reset the setting mode 2 until the
vacuuming is finished.
- The H1P LED is on and the remote controller indicates
(test operation) and (external control) and the
operation will be prohibited.
2 Evacuate the system with a vacuum pump.
3 Press the button and reset the setting mode 2.
Refrigerant recovery operation method
by a refrigerant reclaimer
1 When the unit is at standstill and under the setting mode 2, set
the required function B (refrigerant recovery operation/
vacuuming operation) to
(ON).
- The indoor unit and the outdoor unit expansion valves will
fully open and some solenoid valves will be turned on.
- The H1P LED is on and the remote controller indicates
(test operation) and (external control) and the
operation will be prohibited.
2 Cut off the power supply to the indoor units and the outdoor unit
with the circuit breaker. After the power supply to one side is cut
off, cut off the power supply to the other side within 10 minutes.
Otherwise, the communication between the indoor and outdoor
unit may become abnormal and the expansion valves will be
completely closed again.
3 Recover the refrigerant by a refrigerant reclaimer. For details,
see the operation manual delivered with the refrigerant
reclaimer.
Installation error Error code Remedial action
The stop valve of an
outdoor unit is left
closed.
E3
E4
F3
UF
F6
Check referring to the table in
"11.4. Additional refrigerant
charge"
on page 18
The phases of the
power to the outdoor
units are reversed.
U1
Exchange two of the three phases
(L1, L2, L3) to make a positive
phase connection.
No power is supplied
to an outdoor or
indoor unit (including
phase interruption).
U1
U4
LC
Check if the power wiring for the
outdoor units are connected
correctly.
(If the power wire is not connected
to L2 phase, no malfunction display
will appear and the compressor will
not work.)
Incorrect
interconnections
between units
UF
Check if the refrigerant line piping
and the unit wiring are consistent
with each other.
Refrigerant
overcharge
E3
F6
UF
Recalculate the required amount of
refrigerant from the piping length
and correct the refrigerant charge
level by recovering any excessive
refrigerant with a refrigerant
recovery machine.
The wiring is
connected to the
Q1/Q2 (Out Multi)
U7
UF
U4
UH
Remove the wiring from the Q1/Q2
(Out Multi).
Insufficient refrigerant
E4
F3
Check if the additional refrigerant
charge has been finished correctly.
Recalculate the required amount of
refrigerant from the piping length
and add an adequate amount of
refrigerant.
BS3 RETURN
ON
BS1 MODE
ON