Panasonic URBAN MULTI Manuel D'installation page 14

4.5 When the led indication becomes as shown in the table below,
quickly close valve A and follow instructions as described below.
CAUTION
When adding refrigerant is done or when
pausing, close the valve on the refrigerant tank
immediately.
More refrigerant might be charged by any
remaining pressure after the machine is stopped.
The outdoor fan may keep rotating a little bit
more, but this does not indicate a malfunction.
Case 1: Charging complete
H1P H2P H3P H4P H5P H6P H7P
w c c w w w w
Charging of the refrigerant is complete. Press
button once and go to step 5.
Case 2: Recharging operation
H1P H2P H3P H4P H5P H6P H7P
w c c x w w w
Press button once and perform automatic
BS1 MODE
refrigerant charging again starting from Step 4.2.
Case 3: Charging interrupted
H1P H2P H3P H4P H5P H6P H7P
w c c x x x w
Something is preventing normal operation:
Is the gas side stop valve completely open?
Are the valve on the refrigerant tank and valve A open?
Check if the
BS4 TEST
minutes after the valves were opened.
Is the indoor unit air intake vent or outlet vent blocked?
After correcting the problem, press
perform automatic refrigerant charging again starting from
step 4.2.
Case 4: Failure
H1P H2P H3P H4P H5P H6P H7P
x w w x x x x
(*) An error in the system interrupted the operation of the unit. Check the
error by using the error code displayed on the remote controller. For an
explanation of the error codes, see "Error codes on the remote controller"
on page 19 and solve the problem.
After correcting the problem, press
perform automatic refrigerant charging again starting from
step 4.2.
5 When charging is complete, determine the weight of refrigerant
that was added and fill in the amount in the "Additional
refrigerant charge label" attached to service precautions plate
on the unit.
6 After adding the refrigerant, do not forget to close the lid of the
service port. The tightening torque for the lid is 11.5~13.9 N•m.
Installation manual
12
Code on remote controller
P9
BS1 MODE
Code on remote controller
P8
Code on remote controller
P2
button was pressed within 10
button once and
BS1 MODE
Error code on remote
controller
(*)
See footnote
button once and
BS1 MODE
1 Service port for adding refrigerant
2 Liquid line stop valve
3 Gas line stop valve
Procedure 2: Charging while the outdoor unit is at a standstill
See figure 6.
1 Determine the weight of refrigerant to be charged additionally
referring to the item "Additional refrigerant charge" in "How to
calculate the additional refrigerant to be charged" on page 9 and
fill in the amount in the "Additional refrigerant charge label"
attached to the unit.
2 After the vacuum drying is finished, open valve A and charge the
additional refrigerant in its liquid state through the liquid stop
valve service port taking into account following instructions:
- Check that gas and liquid stop valves are closed.
- Stop the compressor and charge the specified weight of
refrigerant.
If the total refrigerant cannot be charged while the outdoor
unit is at a standstill, it is possible to charge the refrigerant
by operating the outdoor unit using the refrigerant charge
function (refer to "Setting mode 2" on page 17) and follow
"Procedure 3: Charging while the outdoor unit is operating"
on page 12.
Procedure 3: Charging while the outdoor unit is operating
See the figure in "How to connect the tank?" on page 10.
1 Close the front panel and turn on the power to all indoor units
and the outdoor unit.
2 Completely open the gas side stop valve and liquid side stop
valve. Valve A must be left fully closed.
3 Open valve A immediately after starting of the compressor.
4 Charge the additional refrigerant in its liquid state through the
service port of the liquid line stop valve.
5 While the unit is at a standstill and under setting mode 2 (refer to
Checks before initial start-up, "Setting the mode" on page 17),
set the required function A (additional refrigerant charging
operation) to (ON). Then operation starts. The blinking H2P
ON
led indicates test operation and the remote controller indicates
(test operation) and
1
2
3
(external control).
U-4~6ML4DPQ
Urban Multi air conditioner
4PW29037-1