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Field Settings from Outdoor Unit
SiUS331708EA
127
Field Settings and Test Operation
Note:
• The outdoor air temperature must be between 18.3°C (65°F) and 40.6°C (105°F).
• The operation is not possible when a vessel is attached to the liquid piping.
• The compressor rotation speed must be at or above that of charge mode.
(Confirm with the LED display on the outdoor unit PCB.)
• The maximum added refrigerant for subcooling matching is 1 kg (2.2 lbs).
• Reduce the refrigerant when the subcooling degree is high.
• Refrigerant charge mode ends in 60 minutes. If 60 minutes is not long enough, begin the procedure again from
step (1).
• When the discharge pipe superheat degree is low, or if the low pressure is too low, forcibly end refrigerant
charge mode.
2.10 Check Operation
To prevent any trouble in the period of installation on 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 (BS4)
button for 5
seconds.
10 seconds to 10 minutes
LED display (H1P~H7P) (
k
:
ON
h
:
OFF
l
:
BLINK)
h h k h h h h
h l h h h h k
Pressure equalizing
Step 1
20 seconds to 2 minutes
10 minutes
3 minutes
15 minutes
h l h h h k h
Cooling start control
Step 2
h l h h h k k
h l h h k k k
Stability waiting operation
Step 3
Refrigerant overcharge judgment
Step 7
•
Stop valve close check
•
Wrong wiring check
•
Piping length check
h l h h k h h
h l h h k h k
h l h h k k h
Judgment function
Step4~6
5 seconds
h l h k h h k
h l h k h k h
Pump down residual operation
Step 8
2 minutes
Standby for restarting
Completion
Step 9
Содержание RXSQ24TAVJU
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