Installation manual
21
REMQ8~16P7Y1B
VRVIII System air conditioner
4PW37156-1
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.
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.
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
2
Normal system display
3
Remote controller malfunction code display
Remote controller heating mode malfunction codes
Remote controller cooling mode malfunction codes
11.6. Checks after adding refrigerant
■
Are the stop valves for both liquid and gas open?
■
Is the amount of refrigerant, that has been added, recorded?
NOTE
Always close valve A and remove the refrigerant
tank immediately after finishing the refrigerant
charge operation.
The refrigerant charge port of these units have
electric expansion valves that will close
automatically when refrigerant charging operation
has finished. However, the electric expansion
valves will be opened when other operations start
after finishing refrigerant charging operation.
If the refrigerant tank is left with the valve open,
the amount of refrigerant which is properly
charged may be off the point.
H1P
H2P
H3P
H4P
H5P
H6P
H7P
w c c w w w w
LED
display
(Default
status
before
delivery)
Micro-
computer
operation
monitor
Mode
Ready
/Error
Cooling/Heating
changeover
Low
noise
Demand
Multi
Indivi-
dual
Bulk
(master)
Bulk
(slave)
HAP
H1P
H2P
H3P
H4P
H5P
H6P
H7P
H8P
Single outdoor
unit system
c
x
x
w
x
x
x
x
x
Multiple
outdoor
unit
system
Master
unit
(a)
(a) The state of the H8P (multi) LED in a multi-system shows which 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.
c
x
x
w
x
x
x
x
w
Slave
unit
1
c
x
x
x
x
x
x
x
c
Slave
unit
2
c
x
x
x
x
x
x
x
x
BS1 MODE
Error code
P8
recharge
operation
Close valve A immediately and press the TEST OPERATION
button once.
The operation will restart from the charging mode judgement
onwards.
P2
charge
hold
Close valve A immediately. Check
following items:
- 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
After correcting the
abnormality, restart
the automatic
charging procedure
again.
Error code
PA
,
PH
,
PC
replace
cylinder
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
renewed:
PA
= master unit,
PH
= slave unit 1,
PC
= slave unit 2, flashing
PA
,
PH
and
PC
= all units
After recplacing the cylinder, open valve A again and continue the
work.
In case of an outdoor multi system, replacing the
refrigerant tank of the outdoor unit during the refrigerant
charging operation when the display on the remote
controller is not showing
PA
,
PH
or
PC
, may cause an
abnormal stop of the refrigerant charging operation.
P8
recharge
operation
Close valve A immediately.
Restart the automatic charging procedure again.
P2
charge
hold
Close valve A immediately. Check
following items:
- Check if the high pressure/low
pressure gas pipe, suction gas pipe,
liquid pipes and equalizer pipe stop
valves are 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
- Check if the indoor temperature is not
lower than 10°C DB
After correcting the
abnormality, restart
the automatic
charging procedure
again.
*
abnormal
stop
Close valve A immediately. Confirm the
malfunction code by the remote controller
and correct the abnormality by following
the
"Correcting after abnormal completion
of the test operation" on page 25
Make sure to open the stop valves after charging the
refrigerant.
Operating with the stop valves closed will damage the
compressor.
