Service Mode Operation; Additional Refrigerant Charging Method - Panasonic Urban Multi U-8ME4XPQ Manual De Instalación

13. S
ERVICE MODE OPERATION
NOTE Do not shut off the power and do not reset the setting
of mode 2 when vaccuuming or recovering refrigerant.
Otherwise the expansion valves will close making it
impossible to vaccuum the system or to recover the
refrigerant.
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
- The indoor units, HR units and the outdoor unit expansion
valves will fully open.
- The H1P LED is on and the remote controller indicates
(test operation) and
operation will be prohibited.
2 Evacuate the system with a vacuum pump.
3 Press the button and reset the setting mode 2.
BS1 MODE
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 units, HR units and the outdoor unit expansion
valves will fully open.
- The H1P LED is on and the remote controller indicates
(test operation) and
operation will be prohibited.
2 Recover the refrigerant by a refrigerant reclaimer. For details,
see the operation manual delivered with the refrigerant
reclaimer.
3 Press the button and reset the setting mode 2.
BS1 MODE
U-8~16ME4XPQ
Urban Multi air conditioner
4PW40726-1A
(ON).
(external control) and the
(ON).
(external control) and the
14. A
DDITIONAL REFRIGERANT CHARGING
METHOD
When the leak detection function is not required and the entire
refrigerant quantity can not be charged through the liquid pipe stop
valve service port with the unit not operating (refer to "Pre-charging"
on page 17), make sure to charge the remaining charging quantity
using the following procedure:
1 Turn the power of the indoor unit, the HR unit and the outdoor
unit on.
2 Make sure to open the stop valves of the suction gas pipe, the
high pressure/low pressure gas pipe and the liquid pipe
completely.
3 Connect the refrigerant charge hose to the refrigerant charging
port (for additional charging).
4 When the unit is not operating, push the
the additional refrigerant charging operation function A in setting
mode 2 can be defined (refer to "Setting the mode" on page 22),
w
the H1P LED is on ( ).
5 The operation starts automatically.
The H2P LED will start flashing (
operation" and "Under centralized control" will display on the
remote controller.
6 After charging the specified quantity of refrigerant, press the
button to stop the operation.
BS3 RETURN
The operation will stop within 30 minutes.
If charging is not completed after 30 minutes, set and
perform the additional refrigerant charging operation again.
If the additional refrigerant charging operation stops before
the passing of 30 minutes, the system may be overcharged.
Never charge extra refrigerant.
7 Disconnect the refrigerant charge hose.
8 Perform "11.7. Checks after adding refrigerant" as explained on
page 20.
button until
BS2 SET
c
) and the messages "Test
Installation manual
25