Daikin VRV III RXYQ5-54PY1 Service Manual page 209

Field Setting
3.2.5 Setting of Vacuuming Mode
In order to perform vacuuming operation at site, fully open the expansion valves of indoor and
outdoor units and turn on some solenoid valves.
[Operating procedure]
3.2.6 Check Operation Detail
CHECK OPERATION FUNCTION
Unit stopping
Step 1 Pressure equalizing
Step 2 Cooling start control
Step 3 Stability waiting operation
Step4~8
Judgement function
Step 9 Pump down residual operation
Step 10 Standby for restarting
Completion
198
With Setting Mode 2 while the unit stops, set "Refrigerant recovery / Vacuuming mode" to
ON. The expansion valves of indoor and outdoor units fully open and some of solenoid
valves open.
(H2P blinks to indicate the test operation, and the remote controller displays "Test
Operation" and "Under centralized control", thus prohibiting operation.)
After setting, do not cancel "Setting Mode 2" until completion of Vacuuming operation.
Use the vacuum pump to perform vacuuming operation.
Press Mode button "BS1" once and reset "Setting Mode 2".
(Press the MODE button BS1 once and set to SETTING MODE 1 (H1P: OFF))
Press the TEST button for 5 seconds.
10 sec to 10 minutes
20 sec to 2 minutes
10 minutes
• Stop valve close check
• Wrong wiring check
• Correct Refrigerant charge check
• Piping length check
5 minutes
5 minutes
LED display (H1P~H7P) ( 8:
3383333
3933338
3933383
3933388
3933833
3933838
3933883
3933888
3938333
3938338
3938383
Si34-601A
ON 3: OFF 9: BLINK)
Test Operation