Solenoid valve
Magnetic
contactor
2-18
2.5.1 Frozen mode
Control state transition and common control
Component name Thermostat ON Thermostat OFF
Compressor CC ON OFF
Evaporator fan. High speed EFH OFF OFF
Evaporator fan. Low speed EFL ON ON
Condenser fan CF ON / OFF ※1 OFF
Liquid solenoid valve LSV ON OFF
Economizer solenoid valve ESV ON OFF
Injection solenoid valve ISV ON / OFF ※2 OFF
Hot-gas solenoid valve HSV OFF OFF
Defrost solenoid valve DSV OFF OFF
Discharge gas by-pass solenoid valve
BSV OFF OFF
Reheat solenoid valve RSV ON / OFF ※3 OFF
Suction modulating valve SMV 100%
Electronic expansion valve EV 200〜2000pls
Note) ※1: High pressure control (Refer to Page 2-27)
※2: Injection control (Refer to Page 2-28)
※3: RSV：OFF RS≦20˚C、RSV：ON RS≧25˚C
RS > SP + 1.0˚C
RS : Return air temperature LPT : Low pressure transducer
SP : Setting point temperature
Thermostat OFF
●Compressor Stop
●Evaporator fan Low speed
Thermostat ON (Pull-down range)
●Compressor Running
●Evaporator fan Low speed (L)
≤
≤
Continuous compressor running for
2 minutes or more and RS SP
Operation of magnetic contactor and solenoid valve
02LXE10E-A(17-29)07.2.2015:39ページ2-18
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