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SiUS28-902_a
Special Control
Function
28
3.7
Pressure Equalization Prior to Startup
Before activating the compressor, the activation load is lightened by equalization across the
compressor. In addition, inverters turn on electricity and capacitors are charged.
Actuator
Operation
Remarks
Compressor
OFF
⎯
Outdoor unit fan
Cooling:OFF
Heating:Ta>78.8°F; STEP 8,
Ta
≤
78.8°F; OFF
⎯
Four-way valve
Keep former condition.
⎯
Main electronic expansion valve (EV1)
0 pls
⎯
Subcooling electronic expansion valve (EV2)
0 pls
⎯
Hot gas bypass valve (SVP)
ON
⎯
Receiver gas discharging valve (SVG)
OFF
⎯
Ending conditions
•
•
3 min.
•
•
Pc-Pe<29 psi
⎯
or
Summary of Contents for SkyAir FCQ18PVJU
Page 1: ...Split System Air Conditioners SkyAir Inverter R 410A Heat Pump 60Hz P Series SiUS28 902_a...
Page 44: ...Other Control SiUS28 902_a 37 Function...
Page 81: ...SiUS28 902_a Troubleshooting by Remote Controller Troubleshooting 74...
Page 185: ...SiUS28 902 Precautions for New Refrigerant R 410A Precautions for New Refrigerant R 410A 178...