Operation
Function
of
Outdoor Unit
Outdoor Unit
Operating Step
•Compressor step varies considering conditions such as room temperature, operating room number, temperature gap between room temperature and set point temperature and so on.
LEV Control
•The linear expansion valve is pulse is modulated to keep constant superheat or subcooling.
Outdoor Fan Control
•Outdoor fan operates at High or Off to respond to the load condition.
R/Valve Control(Heating Model Only)
•Reversing valves is used to change cooling to heating, heating to cooling.
Defrost Function
•After 45 minutes in heating mode, defrost mode will take effect if the outdoor pipe temp is below 5°C (23°F). The defrost mode will end when the outdoor pipe temp is above 12°C (53.6°F) or after the unit has been operated in cooling mode for 9 minutes.
•To
Oil Return System
•In single(one) compressor operation duration, another compressor will operate for 30 seconds every 1 hours.
compressor Overload Protection
•To protect compressor from being overloaded, the compressor overload protector will turn the compressor off.
High Pressure Protction
•If the refrigerant cycle's pressure is too high, above 36.7 kgf/cm2 (521.997psi), the high pressure switch will turn the compressor off.
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