Daikin RXQ18P7W1BA Specifications download pdf (Page 23)

32°C

20°C

43°C

0°C

Automatic Charge Function

3. INSTALLATION & MAINTENANCE FRIENDLY DESIGN

Conventional Way:

1. calculation of additional refrigerant charging volume

2. charging the unit with additional refrigerant

3. measuring the weight of the cylinder

4. judgment based on pressure (test operation)

VRVIII

With VRVIII however, these 4 steps are omitted since VRVIII unit can

be charged with the necessary amount of refrigerant automatically

via a push button on the PCB. Automatic charging will cease once the

appropriate amount of refrigerant has been transferred.

If temperature drops below 20°C manual charging is necessary. After

having switched to heating and once the indoor temperature rises

above 20°C, push the auto charge button to activate auto charge

function. Refrigerant containment is only available after performing

the automatic charge function.

When refrigerant charging has ceased, pushing the test operation

button on the PCB will initiate a check on the wiring, shut off valves,

sensors and refrigerant volume. This test ceases automatically when

completed.

Automatic Test

Self Diagnostic Function

This function operated via push button on the PCB, speeds up

troubleshooting and should be used for start-up and maintenance.

Disconnected thermistors, faulty solenoid valves or motor operated

valves, compressor malfunctions, communication errors, etc can be

diagnosed quickly.

Easy Maintenance

p. 23

Outdoor temperature

Indoor temperature

Automatic

charge

function

Manual

charge

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Daikin RXQ18P7W1BA Specifications Page 23