Daikin RXQ18P7W1BA Installation Manual download pdf (Page 27)

RX(Y)Q5-10-12P7W1B + RXQ8P7W1B + RXYQ8P8W1B +

RXYHQ12P8W1B + RX(Y)Q14~18P7W1BA

VRVIII System air conditioner

4PW48461-1

Installation manual

In range:

The unit will restart from the charging mode judgement onwards

and the cooling mode will be selected. However, if in the mean

time the temperature has become out of range, heating mode

will be selected again, this is required to increase the indoor

temperature.

■ Charging in cooling mode

6. Start up

Wait while the unit is preparing for charging in cooling mode.

7. Ready

Press the button once within 5 minutes.

If the button is not pushed within 5 minutes, P2 will be

displayed on the remote controller. Refer to "4 Remote controller

malfunction code display" on page 24.

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.

= The state of this LED is not important.

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. When the charging amount is little, the PE

code may not be displayed, but instead the P9 code will be

displayed immediately.

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.

10. Press the button to perform the temperature range

check

Out of range:

In these cases, press the button once and follow the

procedure as described in "5 Final adjustment of the amount of

refrigerant" on page 24.

In range:

The state of the LEDs will show:

Press the button once. The procedure is completed.

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 by using the leak detection function" on page 28.

2 Adding refrigerant without using leak detection function

■ Charge with the outdoor unit at standstill

1. Calculate how much refrigerant to be added using the formula

explained in the chapter "How to calculate the additional

refrigerant to be charged" on page 10.

2. Open valve C (valves A and B and the stop valves must be left

closed) and charge the required amount of refrigerant through

the liquid side stop valve service port.

■ When the required amount of refrigerant is fully charged,

close valve C. Record the amount of refrigerant 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 (pre-charging, charging in heating mode)" on

page 28.

■ When the additional charging is not complete, perform the

procedure explained in the chapter "Charge with operating

outdoor unit" on page 22.

■ Charge with operating outdoor unit

Charge the refrigerant through valve A.

1. Start of charging refrigerant manually

- Open the liquid and gas side stop valves and the service port

stop valve. (Valves A, B and C must be closed.)

- Close all frontpanels except the electric box frontpanel and

turn the power ON.

- Make sure all indoor units are connected, refer to "11.4. How

to check how many units are connected" on page 19.

- If the H2P LED is not ﬂashing (in 12 minutes time after

turning on the power), make sure it is displayed as shown

below.

If the H2P LED is ﬂashing, check the malfunction code on the

remote controller "4 Remote controller malfunction code

display" on page 24.

2. Press the button once if the LEDs combination is not

as in the ﬁgure below.

3. Press the button once.

4. Hold the button down for 5 seconds or more.

5. Charging mode judgement

If the indoor temperature is 20°C DB or lower, charging in

cooling mode is not possible in some cases. The unit will

automatically select the cooling mode or heating mode for

charging.

H1P H2P H3P H4P H5P H6P H7P

Pressure control

(for the ﬁrst minute)

xcxxxxw

Start up control

(for the next 2 minutes)

xcx x xwx

Waiting for stable

heating conditions

(for the next ±15

minutes (according to

the system))

xcxxxww

H1P H2P H3P H4P H5P H6P H7P

cccxwxw

H1P H2P H3P H4P H5P H6P H7P

*****

When a malfunction occurs, check the display of the

remote controller and refer to "4 Remote controller

malfunction code display" on page 24.

H1P H2P H3P H4P H5P H6P H7P

wccwwww

H1P H2P H3P H4P H5P H6P H7P

Out of outdoor

temperture range

wcccw x x

Out of indoor

temperture range

wccc x w x

BS4 TEST

BS1 MODE

H1P H2P H3P H4P H5P H6P H7P

wccwwww

H1P H2P H3P H4P H5P H6P H7P

xxwxxxx

H1P H2P H3P H4P H5P H6P H7P

wwwwwww

BS1 MODE

BS4 TEST

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 37 38

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Daikin RXQ18P7W1BA Installation Manual Page 27

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