Daikin VRV III REYQ8PY1, Service Manual

Page: 214 / 452

Si37-701 Field Setting
Test Operation 203
3.2.6 Setting of Refrigerant Recovery Mode
When carrying out the refrigerant collection on site, fully open the respective expansion valve of
indoor and outdoor units.
All indoor and outdoor unit’s operation are prohibited.
[Operation procedure]
c
In setting mode 2 with units in stop mode, set “Refrigerant Recovery / Vacuuming mode” to
ON. The respective expansion valve of indoor and outdoor units are fully opened. (H2P turns
to display “TEST OPERATION” (blinks), “TEST OPERATION” and “UNDER CENTRALIZED
CONTROL” are displayed on the remote controller, and the all indoor / outdoor unit
operation is prohibited.
After setting, do not cancel “Setting Mode 2” until completion of refrigerant recovery
operation.
d
Collect the refrigerant using a refrigerant recovery unit. (See the instruction attached to the
refrigerant recovery unit for more detal.)
e
Press Mode button “BS1” once and reset “Setting Mode 2”.
3.2.7 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]
c
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.
d
Use the vacuum pump to perform vacuuming operation.
e
Press Mode button “BS1” once and reset “Setting Mode 2”.
3.2.8 Check Operation Detail
Unit stopping
Press the TEST button for 5 seconds.
10 sec to 10 minutes
LED display (H1P~H7P) ( 8
:
ON 3
:
OFF 9
:
BLINK)
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Pressure equalizing
Step 1
20 sec to 2 minutes
Stop valve check
Stop valve check
Wrong wiring check
Piping length check
5 minutes
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Cooling start control Step 2
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Stop valve close check Step 3
Pump down residual operation Step 9
5 minutes
Standby for restarting
Completion
Step 10
•
Wrong wiring check
•
Correct Refrigerant charge check
•
Piping length check
Judgement function
Step4~8
CHECK OPERATION FUNCTION
(Press the MODE button BS1 once and set to SETTING MODE 1 (H1P: OFF))
•
Stop valve close check
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