Daikin VRVIII-S, Service Manual

Page: 112 / 266

SiENBE34-703 Field Setting
Test Operation 101
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]
$ 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
control, 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”.
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.
Unit stopping
Press the TEST button for 5 seconds.
10 sec to 10 minutes
LED display (H1P~H7P) ( 8
:
ON 3
:
OFF 9
:
BLINK)
3383333
3933338
Pressure equalizing
Step 1
20 sec to 2 minutes
10 minutes
3 minutes
15 minutes
3933383
Cooling start control Step 2
3933388
3933888
Stability waiting operation Step 3
Refrigerant over charge judgment
Step 7
•
Stop valve close check
•
Wrong wiring check
•
Piping length check
3933833
3933838
3933883
Judgment function Step4~6
5 seconds
3938338
3938383
Pump down residual operation Step 8
2 minutes
Standby for restarting
Completion
Step 9
CHECK OPERATION FUNCTION