Special Control SiUS281811EA
116 Part 4 Functions and Control
3.5 Restart Standby
Restart is forced into standby to prevent the power from frequently turning on and off and to
equalize pressure in the refrigerant system.
Ta: Outdoor air temperature
3.6 Stop Control
Actuator operation is cleared when the system is down.
Outdoor unit
actuator
Electric Symbol
Operation
18/24 class 30/36/42/48 class
Compressor M1C M1C OFF
Outdoor fan M1F M1F
M2F
Ta > 30°C (86°F): STEP 4
Ta ≤ 30°C (86°F): OFF
Main electronic
expansion valve
Y1E Y1E 0 pulse
Subcooling electronic
expansion valve
— Y3E 0 pulse
Four way valve Y1S Y1S Holds
Hot gas bypass valve Y2S — OFF
Ending conditions 2 minutes
Outdoor unit
actuator
Electric Symbol
Operation
18/24 class 30/36/42/48 class
Compressor M1C M1C OFF
Outdoor fan M1F M1F
M2F
OFF
Main electronic
expansion valve
Y1E Y1E 0 pulse
Subcooling electronic
expansion valve
— Y3E 0 pulse
Four way valve Y1S Y1S Holds
Hot gas bypass valve Y2S — OFF
Ending conditions Indoor unit thermostat is turned ON.