Specifications

Field Setting SiUS39-602
108 Test Operation
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]
c
With Setting Mode 2 while the unit stops, set (B) 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”.
3.2.7 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) of discharge pipe thermistor and judgment of piping
length, refrigerant overcharging, and learning for the minimum opening degree of motorized valve.
Unit stopping
Press the TEST button for 5 seconds.
10 sec to 10 minutes
LED display (H1P~H7P) (
8:ON 9:BLINK 3:OFF)
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Pressure equalizing
Step 1
20 sec to 2 minutes
10 minutes
3 minutes
5 minutes
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Cooling start controlStep 2
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Stability waiting operationStep 3
Pump down residual operation Step 7
5 minutes
Standby for restarting
Completion
Step 8
• Stop valve close check
• Wrong wiring check
• Refrigerant over change check
• Piping length check
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Judgement function
Step4~6
CHECK OPERATION FUNCTION