Daikin RXYSQ4-5-6PA7V1B Service Manual page 132

SiBE34-802
3.2.6 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]
3.2.7 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.
CHECK OPERATION FUNCTION
Unit stopping
Step 1
Pressure equalizing
Step 2 Cooling start control
Step 3 Stability waiting operation
Step4~6
Judgment function
Step 7 Refrigerant over charge judgment
Step 8 Pump down residual operation
Step 9 Standby for restarting
Completion
Test Operation
In "Setting Mode 2" with units in stop mode, set "B Refrigerant Recovery / Vacuuming 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.
Use the vacuum pump to perform vacuuming operation.
Press Mode button "BS1" once and reset "Setting Mode 2".
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
• Piping length check
3 minutes
15 minutes
5 seconds
2 minutes
LED display (H1P~H7P) ( 8:
3383333
3933338
3933383
3933388
3933833
3933838
3933883
3933888
3938338
3938383
Field Setting
ON 3: OFF 9: BLINK)
121