Daikin RXYQ96PATJ [51/108] 2 procedure of adding refrigerant charging and check operation
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Daikin RXYQ96PATJ [51/108] 2 procedure of adding refrigerant charging and check operation

Daikin RXYQ96PATJ [51/108] 2 procedure of adding refrigerant charging and check operation
Installation EDUS391000-N_a
50 Installation of Outdoor Units
[How to Check How Many Units are Connected]
It is possible to find out how many indoor or outside unit in the system are turned on by operating the push button on the PC-board (A1P) of outside
unit (In case of multi system master unit).
Follow the procedure below to check how many indoor or outside units are turned on.
NOTE
• Press the “MODE button” (BS1) if you get confused while operat-
ing.
This returns to Setting Mode 1 (H1P : OFF, default).
12-2 Procedure of Adding Refrigerant charging and
check operation
WARNING Electric Shock Warning
• Make sure to close the electrical components box lid before
turning on the power.
• Perform the setting on the PC-board (A1P) of the outside unit and
check the LED display after the power is on via the inspection door
which is in the electrical components box lid.
(Refer to figure 29)
1. Electrical components box (1)
2. Inspection door
3. Electrical components box (1) lid
4. LED (H1~8P)
5. Push button(BS1~5)
6. Lift the protruding part to open the inspection door.
• Use an insulated rod to operate the push buttons via the electrical
components box’s inspection door.
There is a risk of electric shock if you touch any live parts, since
this operation must be performed with the power on.
• Make sure to use the protect tool (protective groves and goggles)
when charging the refrigerant.
• Due to a danger of liquid hammer, the refrigerant must not be
charged over the allowable maximum amount when charging the
refrigerant.
• Do not perform the refrigerant charging operation under working
for the indoor unit.
• When opening the front panel, make sure to take caution to the fan
rotation during the working.
After the outside unit stops operating, the fan may keep rotation for
a while.
NOTE
• If operation is performed within 12 minutes after the indoor and
outside units are turned on, H2P will be lit on and the compressor
will not operate.
Check the LED display indicate as shown below.
• In order to ensure uniform refrigerant distribution, it may take up to
around 10 minutes for the compressor to start up after the unit
starting operating. This is not a malfunction.
• The refrigerant charge port is connected to the piping inside the
unit.
When the unit is shipped from the factory, the unit’s internal piping
is already charged with refrigerant, so be careful when connecting
the charge hose.
• After adding the refrigerant, make sure to close the lid of the
refrigerant charging port.
The tightening torque for the lid is 8.48 to 10.3 ft · lbf.
• See [Shutoff valve operation procedure] in chapter 11-1 for details
on how to handle shutoff valves.
• When done or when pausing the refrigerant charging operation,
close the valve of the refrigerant tank immediately.
The refrigerant charge port of this product have electric expansion
valve.
The valve will be closed at end of refrigerant charging. However
the valve will be opened on operation after refrigerant charging
(check operation, nomal operation, etc.).
If the tank is left with the valve open, the amount of refrigerant
which is properly charged may be off the point.
• Make sure to perform the check operation after installation.
Otherwise, the malfunction code “U3” will be displayed and normal
operation cannot be performed.
And the failure of “Check of miswiring” may also cause abnormal
operation. Performance may drop due to the failure of “Judgment
of piping length”.
• Check operation must be performed for each refrigerant piping
system.
Checking is impossible if plural systems are being done at once.
• The individual problems of indoor units can not be checked.
About these problems check by test run after the check operation
is completed. (See chapter 13)
• The check operation cannot be performed in recovery or other
service modes.
(LED display:
h ...OFF i ...ON j ...Blinking ∗
...Uncertain)
LED display
H1P H2P H3P H4P H5P H6P H7P
(1) Press the MODE button (BS1) once at Setting Mode 1 (H1P : off), and set the MON-
ITOR MODE (H1P : Blinking).
jhhhhhh
(2) Press the SET button (BS2) the number of times until the
LED display matches that at right.
For checking the number of
outside units : eight times
jhhihhh
For checking the number
of indoor units : five times
jhhhihi
(3) Press the RETURN button (BS3) and read the number of units from the display of
H2P through H7P.
[Reading Method]
The display of H2P through H7P should be read as a binary number, with j standing
for “1” and
h standing for “0”.
j ∗∗∗∗∗∗
jhjhjjh
(4)
Press the MODE button (BS1) once. This returns to Setting Mode 1 (H1P : OFF, default).
hhihhhh
Ex: For the LED display at right, this would be “010110”,
which would mean 22 units are connected.
Note: “000000” indicates 64 units.
32 × 0 + 16 × 1 + 8 × 0 + 4 × 1 + 2 × 1 + 1 × 0 = 22 units
H1P H2P H3P H4P H5P H6P H7P
hhihhhh

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