Special Control SiUS34-801A_b60 VRVIII R-410A Heat Pump 60Hz* Pe_min and Pc_max indicate the minimum and maximum values in the system, respectively.7.6 Standby7.6.1 Restart StandbyUsed to forcedly stop the compressor for a period of 2 minutes, in order to prevent the frequent ON/OFF of the compressorand equalize the pressure within the refrigerant system.Four way valve (High/low pressuregas pipe switch) 20SB Y8S Y2S OFF OFFSolenoid valve (Main bypass) SVE Y5S Y6S OFF OFFY10SSolenoid valve (Hot gas) SVP Y4S Y5S OFF OFFSolenoid valve (Refrigerantregulator liquid pipe) SVL Y3S Y4S OFF OFFSolenoid valve (Refrigerantregulator gas vent pipe) SVG Y1S Y1S OFF OFFSolenoid valve (Refrigerantregulator exhaust pipe) SVO Y7S Y7S OFF OFFSolenoid valve (Refrigerantregulator discharge pipe) SVT Y6S Y8S OFF OFFEnding conditions• 3 min.• Pe_min<36.25psi ∗• Pc_max<453.85psi ∗• Master unit Tdi>230°F• Master unit Tp>284°FActuator SymbolElect. symbolOperationRXYQ144PTJUFor any modelother than thatshown on the leftCompressor 1 — M1C M1C OFFCompressor 2 — M2C M2C OFFOutdoor unit fan 1—M1F M1F Ta>86°F: STEP4Ta≤86°F: OFFOutdoor unit fan 2 M2F — Ta>86°F: STEP4Ta≤86°F: OFFElectronic expansion valve(Main) EVM Y1E Y1E 0 plsY3EElectronic expansion valve(Subcooling) EVT Y2E Y3E 0 plsY5EElectronic expansion valve(Refrigerant charge) EVJ Y4E Y2E 80 plsFour-way valve (Heatexchanger switch) 20SA Y2S Y3S HoldsY9SFour -way valve (High/lowpressure gas pipe switch) 20SB Y8S Y2S HoldsSolenoid valve (Main bypass) SVE Y5S Y6S OFFY10SSolenoid valve (Hot gas) SVP Y4S Y5S OFFSolenoid valve (Refrigerantregulator liquid pipe) SVL Y3S Y4S OFFSolenoid valve (Refrigerantregulator gas vent pipe) SVG Y1S Y1S OFFor
