Electrical Control Function
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
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.
Electrical Control System
65
Summary of Contents for ICS0629C21
Page 1: ...SERVICE MANUAL IOS629C2V01 IOS736C2V01 IUS0736C21 ICS0629C21 ICS0736C21 AIR CONDITIONER i ...
Page 2: ......
Page 4: ......
Page 9: ...Part 2 Indoor Units Four way Cassette Type 6 Ceiling Floor Type 20 5 ...
Page 13: ......
Page 16: ...Service Space 3 Service Space 1000mm 1000mm 1000mm 1000mm 12 Four way Cassette Type ...
Page 17: ...Wiring Diagrams 4 Wiring Diagrams ICS0629C21 ICS0736C21 Four way Cassette Type 13 ...
Page 23: ...Field Wiring 11 Field Wiring ICS0629C21 ICS0736C21 Four way Cassette Type 19 ...
Page 27: ...Service Space 3 Service Space Ceiling Floor Type 23 ...
Page 28: ...Wiring Diagrams 4 Wiring Diagrams IUS0736C21 24 Ceiling Floor Type ...
Page 35: ...Field Wiring 11 Field Wiring IUS0736C21 Ceiling Floor Type 31 ...
Page 40: ...Wiring Diagrams 3 Wiring Diagrams IOS629C2V01 36 Outdoor Unit ...
Page 41: ...Wiring Diagrams IOS736C2V01 Outdoor Units 37 ...
