Panasonic U-5MX4XPQ Manuel D'installation page 24

Charging in cooling mode
6. Start up
Wait while the unit is preparing for charging in cooling mode.
H1P H2P H3P H4P H5P H6P H7P
Pressure control x c x x x x w
(for the first minute)
Start up control
x c x x x w x
(for the next 2 minutes)
x c x x x w w
Waiting for stable
heating conditions
(for the next ±15
minutes (according to
the system))
7. Ready
H1P H2P H3P H4P H5P H6P H7P
c c c x w x w
Press the button once within 5 minutes.
BS4 TEST
If the button is not pushed within 5 minutes, P2 will be
BS4 TEST
displayed on the remote controller. Refer to "4 Remote controller
malfunction code display" on page 21.
8. Operation
When the following led display is shown, open valve A and close
the frontpanel. If the frontpanel is left open, the system can not
operate properly during the refrigerant charging.
H1P H2P H3P H4P H5P H6P H7P
w c *
*
= The state of this led is not important.
When a malfunction occurs, check the display of the
remote controller and refer to "4 Remote controller
malfunction code display" on page 21.
9. Complete
If the display on the remote controller shows a flashing PE code,
charging is almost finished.
When the unit stops operating, close valve A immediately and
check the leds and check if the P9 code is displayed on the
remote controller.
H1P H2P H3P H4P H5P H6P H7P
w c c w w w w
If it is not as shown above, correct the malfunction (as indicated
in the display of the remote controller) and restart the complete
charging procedure. When the charging amount is little, the PE
code may not be displayed, but instead the P9 code will be
displayed immediately.
10. Press the button once and the charging is complete.
BS1 MODE
Record the amount that was added on the additional refrigerant
charge label provided with the unit and attach it on the back side
of the front panel.
Perform the test procedure as described in "In case refrigerant
was added without using the leak detection function (charging in
cooling mode)" on page 25.
Installation manual
21
3
4
Remote controller heating mode malfunction codes
* * * *
Remote controller cooling mode malfunction codes
Normal system display
LED
Micro-
display
computer
(Default
Ready
operation
status
Mode /Error
monitor
before
delivery)
HAP H1P H2P
Single outdoor c x x
unit system
Master c x x
(a)
unit
Multiple Slave
c x x
outdoor unit
(a)
unit 1
system
Slave
c x x
unit
(a)
2
(a) The state of the H8P (multi) LED in a multi-system shows wich unit is the master
unit (w), slave 1 unit (c) or slave 2 unit (x).
Only the master unit is connected to the indoor units with interunit wiring.
Remote controller malfunction code display
Error code
Close valve A immediately and press the TEST OPERATION
P8
recharge button once.
operation The operation will restart from the charging mode judgement
onwards.
Close valve A immediately. Check
P2
charge following items:
hold - Check if the gas side stop valve is
opened correctly
- Check if the valve of the refrigerant
cylinder is opened
- Check if the air inlet and outlet of the
indoor unit are not obstructed
Error code
Close valve A and replace the empty cylinder. When renewed,
open valve A (the outdoor unit will not stop operating).
The code on the display shows the unit where a cylinder is to be
PA, PH, PC
renewed:
replace
PA = master unit, PH = slave unit 1, PC = slave unit 2, flashing PA,
cylinder
PH and PC = all units
After recplacing the cylinder, open valve A again and continue the
work.
Close valve A immediately.
P8
recharge Restart the automatic charging procedure again.
operation
Close valve A immediately. Check
following items:
- Check if the gas side stop valve is
opened correctly
P2
- Check if the valve of the refrigerant
charge
cylinder is opened
hold
- Check if the air inlet and outlet of the
indoor unit are not obstructed
- Check if the indoor temperature is not
lower than 20°C DB
Close valve A immediately. Confirm the
* malfunction code by the remote controller
abnormal and correct the abnormality by following
stop the "Correcting after abnormal completion
of the test operation" on page 26.
Cooling/Heating
changeover
Indivi- Bulk Bulk Low
dual (master) (slave) noise Demand Multi
H3P H4P H5P H6P H7P H8P
w x x x x
w x x x x w
x x x x x c
x x x x x
After correcting the
abnormality, restart
the automatic
charging procedure
again.
After correcting the
abnormality, restart
the automatic
charging procedure
again.
U-5~18MX4XPQ
Urban Multi air conditioner
4PW28163-1C
x
x