Panasonic URBAN MULTI Manuel D'installation page 13

CAUTION
Make sure to turn ON the power 6 hours before
starting the operation. This is necessary to warm the
crankcase by the electric heater.
At least 30 minutes is needed for automatic charging
of the refrigerant when 3 kg of additional refrigerant is
being added at
approximately 30°C. The charging time depends on
the amount of charged refrigerant and on the outside
temperature.
Automatic refrigerant charging is NOT possible if the
following restrictions are exceeded:
Outside temperature: 0°C DB~43°C DB
Indoor temperature: 20°C DB~32°C DB
Indoor unit connection capacity: 50%~130%
Automatic refrigerant charging procedure
1 Open the liquid and gas side stop valves completely.
Note that valve A must be closed!
2 Turn on the power of the outdoor unit and indoor units.
NOTE When an indoor unit is connected to the
refrigerant system and the indoor unit is turned
off, automatic charging will fail.
3 Make sure that the led on the PCB (A1P and A2P) on the
outdoor unit are as shown in the table below. This indicates that
the system is operating normally.
H1P H2P H3P H4P H5P H6P H7P
x x w x x x x
Led state
Throughout the manual the state of the leds is indicated as
follows:
x
OFF
w
ON
c
blinking
ON or OFF
If H2P is lit up, check the type of error based on the error code in
the remote controller and correct the error in accordance with
"12.4. Test operation" on page 18.
4 Automatically charge the refrigerant according to the procedure
described below.
WARNING
Do not touch anything else than the push-
buttons (BS1~5) on the PCB (A2P) when
making the settings. These settings must be
done with the power on
4.1 Press once.
BS4 TEST
H1P H2P H3P H4P H5P H6P H7P
w w w w w w w
4.2 Press for 5 seconds. The unit will start running.
BS4 TEST
H1P H2P H3P H4P H5P H6P H7P
x c x x x
U-4~6ML4DPQ
Urban Multi air conditioner
4PW29037-1
an outside temperature of
If the led display below appears, the automatic refrigerant
charging restriction has been exceeded. Additional refrigerant
must be charged by calculating the additional refrigerant
charging amount.
H1P H2P H3P H4P H5P H6P H7P
w c c c w x x
or
H1P H2P H3P H4P H5P H6P H7P
w c c c x w x
If the led display below appears, check the indoor unit
connection capacity.
H1P H2P H3P H4P H5P H6P H7P
w c c c c x w
If the led display below appears, the liquid and gas side stop
valves may be closed.
H1P H2P H3P H4P H5P H6P H7P
w x
NOTE If you want to repeat the automatic refrigerant
charging operation from step 4.2, fully open the
liquid and gas side stop valves and press the
button once.
BS1 MODE
4.3 When the led indication becomes as shown in the table below in
about 15 to 30 minutes after start of operation, open valve A at
once to start charging of the refrigerant.
Immediately after starting charging of the refrigerant by opening
valve A, press once. When
BS4 TEST
within 10 minutes after the led indication is shown, charging is
stopped.
H1P H2P H3P H4P H5P H6P H7P
c c c x w x w
4.4 The led indication becomes as shown in the table below during
automatic refrigerant charging.
During automatic refrigerant charging, the remote controller
indicates (test operation) and
H1P H2P H3P H4P H5P H6P H7P
w c
NOTE If the led display below appears, the refrigerant
tank is empty. Replace the refrigerant tank, open
valve A and re-charge.
H1P H2P H3P H4P H5P H6P H7P Code on remote controller
w c c x x w x
The led indication becomes as shown in the table below when
automatic refrigerant charging is about to end. Prepare to close
the valve on the refrigerant tank.
H1P H2P H3P H4P H5P H6P H7P
c c c w w w w
It is possible that the code PE is not shown on the
NOTE
remote controller but this does not indicate a
malfunction. The led indication can immediately
shift to the situation as shown in "Case 1:
Charging complete" on page 12.
Description of error
Inappropriate outdoor
temperature
Description of error
Inappropriate indoor
temperature
Description of error
Inappropriate indoor unit
connection capacity
Description of error
Stop valve is closed
is not pressed
BS4 TEST
Code on remote controller
PA
(external control).
PA
Code on remote controller
PE
Installation manual
11