Daikin RMXS-L Series Service Manual page 118

Field Settings
2.1.6 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>
(1) In setting mode 2 with units in stop mode, set the item No.21 (refrigerant recovery / vacuuming
(2) Use the vacuum pump to perform vacuuming operation.
(3) Press the MODE (BS1) button once and reset setting mode 2.
2.1.7 Check Operation
To prevent any trouble in the period of installation at site, the system is provided with a test
operation mode enabling check for incorrect wiring, stop valve left in closed, coming out (or
misplacing with suction pipe thermistor) or discharge pipe thermistor and judgment of piping length,
refrigerant overcharging, and learning for the minimum opening degree of electronic expansion valve.
Unit stopping
Step 1
Pressure equalizing
Step 2 Cooling start control
Step 3 Stability waiting operation
Step 4~6
Judgment function
Step 7 Refrigerant overcharge judgment
Step 8 Pump-down residual operation
Step 9 Standby for restarting
Completion
109
mode) to ON. The respective expansion valve of indoor and outdoor units are fully opened. Test
Operation and Under Centralized Control are displayed on the remote controller, and the
indoor / outdoor unit operation is prohibited.
After setting, do not cancel setting mode 2 until completion of Vacuuming operation.
Press the TEST button for 5 seconds.
10 seconds to 10 minutes
20 seconds to 2 minutes
10 minutes
• Stop valve close check
• Wrong wiring check
• Piping length check
3 minutes
15 minutes
5 seconds
2 minutes
k :
LED display (H1P~H7P) ( ON
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Test Operation and Field Settings
SiUS181305E
h : l :
OFF BLINK)
(R12957)