Midea MC-SU30-RN1L

Aqua Tempo Super II
201709 31
Part 3
- Control
8 Role of Temperature Sensors in Control Functions
Table 3-8.1: Names and functions of the temperature sensors
Number
Sensor name
1
Sensor
code
Mode
Control functions
1
Discharge pipe temperature sensor 1/ Discharge pipe
temperature sensor 2
Tp1/Tp2
Heating
 Crankcase heater control
1
 Electronic expansion valve control
2
 Compressor output control
3
 Discharge temperature protection
control
4
Cooling
 Crankcase heater control
1
 Compressor output control
3
 Discharge temperature protection
control
4
2
Outdoor ambient temperature sensor
T4
Heating
 Crankcase heater control
1
 Electric auxiliary heater control
 Water flow switch heater control
 Compressor output control
3
 Electronic expansion valve control
2
 Outdoor fan control
5
Cooling
 Crankcase heater control
1
 Compressor output control
3
 Defrosting operation control
6
 Electronic expansion valve control
2
 Outdoor fan control
5
3
Air side heat exchanger refrigerant outlet temperature
sensor
T3
Heating
 Outdoor fan control
5
 Electronic expansion valve control
2
Cooling
 Defrosting operation control
6
 Air side heat exchanger high
temperature protection control
7
4
Total cooling outlet temperature sensor
TZ/7
Heating
None
Cooling
 Outdoor fan control
5
 Compressor output control
3
 Air side heat exchanger high
temperature protection control
7
5
Water side heat exchanger anti-freezing temperature
sensor1/Water side heat exchanger anti-freezing
temperature sensor 2
Taf1/
Taf2
Heating
None
Cooling
 Water side heat exchanger heater
control
 Water side heat exchanger anti-freeze
protection control
8
 Water side heat exchanger low
temperature protection control
9
6
Suction pipe temperature sensor
Th
Heating
 Electronic expansion valve control
2
Cooling
 Electronic expansion valve control
2
7
Water inlet temperature sensor
Twi
Heating
 Water flow switch heater control
Cooling
 Electronic expansion valve control
2
 Compressor output control
3
 Water flow switch heater control
 Water side heat exchanger anti-freeze
protection control
8
 Water side heat exchanger
temperature difference protection
control
10
8
Water outlet temperature sensor
Two
Heating
 Compressor output control
3
 Water flow switch heater control
Cooling
 Compressor output control
3
 Defrosting operation control
6
 Water flow switch heater control
 Water side heat exchanger anti-freeze
protection control
8
 Water side heat exchanger
temperature difference protection
control
10