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Installation manual
24
RXYSQ4~Y1B
VRVIII-S System air conditioner
4PW68122-1 – 02.2011
4
Indication of power consumption limitation setting
11.4. Test operation
■
Check the stop valves
Make sure to open the gas and liquid line stop valves.
■
After installation, perform the test operation.
Unless the test operation is performed, the error code "
U3
" is
shown on the remote controller and the unit cannot be operated.
Performing the test operation
1
To protect the compressor, make sure to turn on the power
supply 6 hours before starting operation.
2
Set to setting mode 1 (H1P led is off) (refer to
"Setting mode 1"
on page 23
).
3
Press the
button for 5 seconds when the unit is at a
standstill. The test operation starts when the H2P led blinks and
the remote controller indicates
(test operation) and
(external control).
It may take 10 minutes to bring the state of refrigerant uniform
before the compressor starts, but that is not a malfunction.
The test operation is automatically carried out in cooling mode
during 15~30 minutes.
Depending on the situation, the refrigerant running sound or the
sound of a magnetic solenoid valve may rise during this
operation.
The following items are automatically checked:
-
Check for incorrect wiring
-
Check if stop valves are open
-
Check of refrigerant charge
-
Automatic judgement of piping length
4
After the test operation (maximum 30 minutes), the unit
automatically stops. Check the operation results by the outdoor
unit led indication.
5
Measure to be taken when operation finishes abnormally
1.
Confirm the error code on the remote controller.
2.
Correct what is abnormal.
(See the installation manual and operation manual or
contact your dealer.)
3.
After the abnormality is corrected, press the
button and reset the error code.
4.
Start the unit again to confirm that the problem is properly
solved.
5.
If no error code is indicated on the remote controller, it is
possible to start operation after 5 minutes.
Error codes on the remote controller
x
standard operation (= factory setting)
w
operation
H1P
H2P
H3P
H4P
H5P
H6P
H7P
x
x w x
x
x
x
NOTE
After turning on the power supply, the unit can not be
started until the H2P initialisation led goes off
(maximum 12 minutes).
NOTE
When you want to terminate the test operation,
press the
button. The unit will keep
running for 30 seconds and then stops. During
test operation it is impossible to stop the unit with
the remote controller.
H1P
H2P
H3P
H4P
H5P
H6P
H7P
normal
x
x w x
x
x
x
abnormal
x w x
x
x
x
x
■
Indoor units cannot be checked individually. After the
test operation is finished, check the indoor units
individually via the remote controller. This is possible
for VRV and Sky Air indoor units only.
■
The led indication changes during this operation, but
that is not abnormal.
■
Please attach the front plate of the outdoor unit in
order to prevent electric shocks.
DEMAND
DEMAND
BS4 TEST
BS3 RETURN
Installation error
Malfunction
code
Remedial action
The stop valve of
an outdoor unit is
left closed.
E3
Open the stop valve on both the gas
and liquid side.
The stop valve of
an outdoor unit is
left closed.
E4
F3
Open the stop valve on both the gas
and liquid side.
Insufficient
refrigerant
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.
Refrigerant
overcharge
E3
F6
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.
Insufficient supply
voltage
U2
Check if the supply voltage is supplied
properly.
The check
operation is not
performed.
U3
Perform the check operation.
No power is
supplied to the
outdoor unit.
U4
Check if the power wiring for the
outdoor unit is connected correctly.
Improper type of
indoor units are
connected.
UA
Check the type of indoor units that are
currently connected. If they are not
proper, replace them with proper ones.
The stop valve of
an outdoor unit is
left closed.
UF
Open the stop valve on both the gas
and liquid side.
The piping and
wiring of the
specified indoor
unit are not
connected
correctly to the
outdoor unit.
Confirm that the piping and wiring of the
specified indoor unit are connected
correctly to the outdoor unit.
Incorrect
interconnections
between units.
UH
Connect interconnections F1 and F2 of
the connected BP unit correctly to the
outdoor unit's PC board (TO BP UNIT).
Make sure that the communication
with the BP unit is enabled. See
"9.12. Field settings for BP unit" on
page 15
.
BS3 RETURN
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