Electrical Control Function
110
Electrical Control System
1. Electrical Control Function
1.1 Definition
T1: Indoor room temperature
T2: Coil temperature of indoor heat exchanger middle.
T2B: Coil temperature of indoor heat exchanger outlet.
T3: Coil temperature of condenser
T4: Outdoor ambient temperature
T5: Compressor discharge temperature
1.2 Main Protection
1.2.1 Time delay at restart for compressor.
1.2.2 Temperature protection of compressor top
The unit will stop working when the compressor top temp. protector cut off, and will restart after the
compressor top temp. protector restart.
1.2.3 Temperature protection of compressor discharge
For 12K units:
When the compressor discharge temp. is getting higher, the running frequency will be limited as below rules:
---Compressor discharge temp. T5>115
℃
for 5s, compressor stops and restarts up till T5<90
℃
---110<T5<115
℃
, decrease the frequency to the lower level every 2 minutes.
---105<T5<110
℃
, keep running at the current frequency.
----T5<105
℃
, no limit for frequency.
For other units:
When the compressor discharge temp. is getting higher, the running frequency will be limited as below rules:
----If 102
℃
<T5<115
℃
, decrease the frequency to the lower level every 2 minutes till to F1.
---If T5>115
℃
for 10 seconds, the compressor will stop and restart till T5<90
℃
.
1.2.4 Sensor protection at open circuit and breaking disconnection.
1.2.5 Indoor fan delayed open function
When the unit starts up, the louver will be active immediately and the indoor fan will open 10s later.
If the unit runs in heating mode, the indoor fan will be also controlled by anti-cold wind function.
1.2.6 Fan Speed is out of control(for units used DC motor)
When Indoor Fan Speed keeps too low (For
Super slim cassette,
less than
200RPM, for other models,
less than
300RPM
) for 50s, the unit will stop and the LED will display the failure
Summary of Contents for KOU-12HFN1-QRC8
Page 1: ...Contents i Energy Related Products SUPER DC INVERTER SERIES Service Manual 2013 LFIS B 1309...
Page 2: ......
Page 4: ......
Page 17: ...Service Space Indoor Units 13 3 Service Space 1000mm 1000mm 1000mm 1000m m...
Page 23: ...Field Wiring Indoor Units 19 9 Field Wiring...
Page 31: ...Wiring Diagrams Indoor Units 27 KTB 24HWDN1 QRC4...
Page 42: ...Service Space 38 Indoor Units 3 Service Space...
Page 44: ...Wiring Diagrams 40 Indoor Units KUE 36HRFN1 QRC8 A...
Page 47: ...Indoor Units 43 9 Field Wiring...
Page 50: ...Dimensions 46 Indoor Units 2 Dimensions...
Page 51: ...Service Space Indoor Units 47 3 Service Space...
Page 52: ...Wiring Diagrams 48 Indoor Units 4 Wiring Diagrams KCA2U 12HRFN1 QRC8 KCA2 18HRFN1 QRC8...
Page 56: ...52 Indoor Units 10 Field Wiring KCA2U 12HRFN1 QRC8 KCA2 18HRFN1 QRC8...
Page 58: ......
Page 61: ...Dimensions Console Type 57 2 Dimensions KFAU 12HRFN1 QRC8 KFA 16HRFN1 QRC8...
Page 62: ...Service Space 58 Console Type 3 Service Space...
Page 63: ...Wiring Diagrams Console Type 59 4 Wiring Diagrams KFAU 12HRFN1 QRC8 KFA 16HRFN1 QRC8...
Page 68: ...Field Wiring 64 Console Type 10 Field Wiring KFAU 12HRFN1 QRC8 KFA 16HRFN1 QRC8...
Page 74: ...Wiring Diagrams 70 Outdoor Units 4 Wiring Diagrams KOU 12HFN1 QRC8...
Page 76: ...Wiring Diagrams 72 Outdoor Units KOU 36HFN1 RRC4 KOU 36HFN1 RRC8 520 KOU 36HFN1 QRC8 5A0...
Page 77: ...Wiring Diagrams Outdoor Units 73 KOU 36HFN1 RRC8 5A0...
Page 102: ...Refrigerant pipe installation 98 Installation...
Page 110: ...Engineering of insulation 106 Installation cause leakage to damage the house decoration...