Check Operation - Daikin RXSQ24TAVJU Service Manual

Field Settings from Outdoor Unit
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
Step 1 Pressure equalizing
Step 2 Cooling start control
Step 3 Stability waiting operation
Step4~6
Judgment function
Step 7 Refrigerant overcharge judgment
Step 8 Pump down residual operation
Step 9 Standby for restarting
Completion
127
Press the TEST (BS4) 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) (
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Field Settings and Test Operation
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