Test Operation - Panasonic U-5MX3XPQB Manual De Instalación

8.4. Test operation

NOTE In case of 18~48 type: check the setting and the
indication results. Refer to chapter "Caution for
18~48 type units" on page 19.
After turning on the power supply, the unit cannot
be started until the H2P initialisation led goes off
(maximum 12 minutes).
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 17).
3 Press the button for 5 seconds (or longer when the
BS4 TEST
unit is at standstill). The test operation starts when the H2P led
blinks and the remote controller indicates
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 miswiring
- Check if stop valves are open
- Check of refrigerant charge
- Automatic judgement of piping length
NOTE When you want to terminate the test operation,
press the
BS3 RETURN
running for 30 seconds and then stops. During
test operation it is impossible to stop the unit with
the remote controller.
4 After the test operation (maximum 30 minutes), the unit
automatically stops. Check the operation results by the outdoor
unit led indication.
H1P H1P H2P H2P
normal
abnormal
Indoor units cannot be checked individually. After the
test operation is finished, check the indoor units
individually via the remote controller.
The led indication changes during this operation, but
that is not abnormal.
Please attach the front plate of the oudoor unit in
order to prevent incorrect judgement during operation.
Installation manual
19
(test operation)
button. The unit will keep
H3P H3P H4P H4P H5P H5P H6P H6P H7P H7P
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 error is corrected, press the
and reset the error code.
4. Start the unit again to confirm that the problem is properly
solved.
Error codes on the remote controller:
Installation error Error code
The stop valve of E3
an outdoor unit is
E4
left closed.
F3
UF
The phases of the U1
power to the
outdoor units are
reversed.
No power is U1
supplied to an
U4
outdoor or indoor
unit (including
phase
interruption).
Incorrect UF
interconnections
between units
Refrigerant E3
overcharge
F6
UF
For the U7
U-5~16MX3
, the
UF
wiring is
connected to the
Q1/Q2
(Out Multi)
Insufficient E4
refrigerant
F3
6 Caution for 18~48 type units
Indication of the outdoor unit PCB
HAP HAP H1P H1P
Master unit
Slave unit 1
Slave unit 2
The outdoor unit connected to the indoor unit by piping is the
master outdoor unit. The other outdoor units (not connected to
the indoor unit) are the slave outdoor units.
Carry out all the settings of the master unit. Settings on the slave
units have no effect.
If the unit is operated with the valve closed, it may not function
properly or even damage the equipment.
7 If no error code is indicated on the remote controller, it is
possible to start operation after 5 minutes.
button
BS3 RETURN
Remedial action
Check referring to the table in
"6.8. Additional refrigerant charge" on
page 11
Exchange two of the three phases
(L1, L2, L3) to make a positive phase
connection.
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.)
Check if the refrigerant line piping and
the unit wiring are consistent with
each other.
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.
Remove the wiring from the Q1/Q2
(Out Multi).
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.
H2P H2P H3P H3P H4P H4P H5P H5P H6P H6P H7P H7P H8P H8P
U-5~48MX3XPQB
Urban Multi air conditioner
4PW21867-1A