13.6. Safety device13.6.1. Indoor unitIndoor unit Heat pump model CS-F24DD2E5 CS-F28DD2E5 CS-F34DD2E5 CS-F43DD2E5 CS-F50DD2E5Cooling only modelFor fan motor protectionInternal OFF °C 135 135 135 135 135 135 135 135protector ON °C 85 85 85 85 85 85 85 85For control protectionFuse CUT A 3.15 3.15 3.15 3.15 3.15 3.15 3.15 3.15For fan motor protectionFuse CUT A - - - - - - - -13.6.2. Outdoor unitOutdoor unit Heat pumpmodel50Hz CU-B24DBE5 CU-B28DBE5 CU-B28DBE8 CU-B34DBE5 CU-B34DBE8 CU-B43DBE8 CU-B50DBE8For refrigerant cycleHigh pressure OFF MPa 4.15 4.15 4.15 4.15 4.15 4.15 4.15switch (63H1) ON MPa 3.05 3.05 3.05 3.05 3.05 3.05 3.05For compressorOver currentprotectionHeat pump model OFF A 19 20 7.5 29 11 14 15RESET - Automatic Automatic Automatic Automatic Automatic Automatic AutomaticDischarge tempprotectionDischarge Compressortemperature OFF °C 115 115 115 120 120 120 120thermistor (Th1)Liquid compressprotectionCrankcase heater Input power W 37 37 37 37 37 37 37CompressorprotectionInternal protector OFF °C50Hz160 165 165 160 160 160 160ON °C50Hz90 90 80 90 90 90 90trip time 50Hz 3-10sec/65A 3-10sec/78A 3-10sec/25A - - - -For fan motorprotectionInternal OFF °C 135 135 135 135 135 135 135protector (49F) ON °C 85 85 85 86 86 86 86Heating control(Heat pump only)Pressure switch OFF MPa - - - - - - -(Fan speed) (63H2) ON MPa - - - - - - -Cooling controlHeat exchanger Th 40°C → High speedoutlet temp Control method Th < 40°C → 5 speed step controlthermistor (Th2)For controlprotectionFuse CUT A 6.3 6.3 6.3 6.3 6.3 6.3 6.31MPa = 10.2kgf/cm 2133
