Daikin RXQ18P7W1BA Installation Manual download pdf (Page 33)

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

RXYHQ12P8W1B + RX(Y)Q14~18P7W1BA

VRVIII System air conditioner

4PW48461-1

Installation manual

In case refrigerant was added by using the leak detection

function

■ In the check operation, the following checks and judgements will

be performed:

■ Check of the stop valve opening

■ Check for wrong wiring

■ Judgement of piping length

■ Judgement of initial refrigerant state

■ It takes ±3 hours (if the outdoor temperature is low, it takes

±4 hours) to complete the check operation.

■ The system can not perform the judgement of initial refrigerant

state in the following cases:

■ The outdoor temperature is out of range

(<0°C DB or >43°C DB)

■ The indoor temperature is out of range

(<20°C DB or >32°C DB)

■ A forced OFF during the test operation

In this case, after performing the check operation, normal

operation is possible although the abnormality code U3 is

displayed on the indoor remote controller and the refrigerant

leakage detection function can not be used.

Perform the check operation again and complete the judgement

of initial refrigerant state.

Perform the test operation as decribed in the paragraph "Test

operation procedure" on page 28.

In case refrigerant was added without using the leak

detection function (charging in cooling mode)

■ In the check operation, the following checks and judgement will

be performed:

■ Check of the stop valve opening

■ Check for wrong wiring

■ Judgement of piping length

■ It takes ±30 minutes to complete the check operation.

Check operation procedure

1 Close the electric box lid and all front panels except the one on

the side of the electric box.

2 Turn on the power to the outdoor unit and all connected indoor

units. Be sure to turn the power ON at least 6 hours before

operation in order to have power running to the crank case

heater.

3 Make the ﬁeld setting as needed using the push buttons on the

PCB (A1P) of the outdoor unit. Refer to "12.3. Field setting" on

page 25.

4 Set the check operation (without initial refrigerant decision)

following setting mode 2 in the ﬁeld setting and perform the

check operation.

The system operates for ±30 minutes and automatically stops

the check operation.

■ If no malfunction code is displayed on the remote controller

after the system has stopped, check if the operation is

completed. Normal operation will be possible after 5 minutes.

■ If a malfunction code is displayed on the remote controller,

correct the malfunction and perform the check operation

again as decribed in "Correcting after abnormal completion

of the test operation" on page 29

In case refrigerant was added without using the leak

detection function (pre-charging, charging in heating mode)

■ In the check operation, the following checks and judgement will

be performed:

■ Check of the stop valve opening

■ Check for wrong wiring

■ Check of refrigerant overcharge

■ Judgement of piping length

■ It takes ±40 minutes to complete the check operation.

Perform the test operation as decribed in the paragraph "Test

operation procedure" on page 28.

Test operation procedure

1 Close all front panels except the front panel of the electric box.

2 Turn ON the power to all outdoor units and the connected indoor

units.

Be sure to turn on the power 6 hours before operation in order to

have power running to the crank case heater and to protect the

compressor.

3 Make the ﬁeld setting as described in the paragraph "12.3. Field

setting" on page 25.

4 Press the button once, and set to the SETTING

MODE (H1P LED = OFF).

5 Press and hold the button down for 5 seconds or

more. The unit will start the test operation.

■ The test operation is automatically carried out in cooling

mode, the H2P LED will light up and the messages "Test

operation" and "Under centralized control" will display on the

remote controller.

■ It may take 10 minutes to bring the state of the refrigerant

uniform before the compressor starts.

■ During the test operation, the refrigerant running sound or

the magnetic sound of a solenoid valve may become loud

and the LED display may change, but these are not mal-

functions.

■ During the test operation, it is not possible to stop the unit

operation from a remote controller. To abort the operation,

press the button. The unit will stop after

±30 seconds.

6 Close the front panel in order to let it not be the cause of

misjudgement.

7 Check the test operation results by the LED display on the

outdoor unit.

8 When the test operation is fully completed, normal operation will

be possible after 5 minutes.

Otherwise, refer to "Correcting after abnormal completion of the

test operation" on page 29 to take actions for correcting the

abnormality.

H1P H2P H3P H4P H5P H6P H7P

Normal completion

xxwxxxx

Abnormal completion

xwwxxxx

BS1 MODE

BS4 TEST

BS3 RETURN

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Daikin RXQ18P7W1BA Installation Manual Page 33

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