Electrical Control Function
212
Electrical Control System
1. Electrical Control Function
1.1 Definition
T1: Room Air Thermistor (RAT)
T2: Indoor Coil Thermistor (ICT)
T2B: Indoor Return Gas Thermistor (RGT)
T3: Outdoor Coil Thermistor (OCT)
T4: Outdoor Air Thermistor (OAT)
T5: Compressor Discharge Thermistor (CTT)
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 super slim cassette: When indoor fan speed keeps too low (lower than 200RPM) for 50s, the unit will
stop and the LED will display the failure.
For other models: When indoor fan speed keeps too low (lower than 300RPM) for 50s, the indoor fan will
shut off and restart 30s later, if protection happened 3 times when fan motor restart continuously, the unit will
stop and the LED will display the failure.
Summary of Contents for AWAU-YLD012-H11
Page 14: ...Dimensions Console Type 135 2 Dimensions AWSI XAD012 N11 AWSI XAD018 N11 ...
Page 15: ...Service Space 136 Console Type 3 Service Space ...
Page 16: ...Wiring Diagrams Console Type 137 4 Wiring Diagrams AWSI XAD012 N11 AWSI XAD018 N11 ...
Page 21: ...Field Wiring 142 Console Type 10 Field Wiring AWSI XAD012 N11 AWSI XAD018 N11 ...
Page 31: ...Wiring Diagrams 152 Outdoor Units 4 Wiring Diagrams AWAU YLD012 H11 ...
Page 33: ...Wiring Diagrams 154 Outdoor Units AWAU YLD036 H13 AWAU YLD048 H13 ...
Page 34: ...Wiring Diagrams Outdoor Units 155 AWAU YLD060 H13 ...
