mundoclima Aerotherm V17 Series, Service Manual

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P
art 3 - Contr
ol
Table 3-7.1: Names and functions of the temperature sensors
Number Sensor name
1
Sensor
code
Mode Control functions
1
Discharge pipe temperature
sensor
Tp
Heating
ƒ
Electronic expansion valve control
2
ƒ
Discharge superheat control
Cooling
ƒ
Electronic expansion valve control
2
ƒ
Outdoor fan control
3
ƒ
Discharge superheat control
2
Outdoor ambient temperature
sensor
T4
Heating
ƒ
Compressor startup control
4
ƒ
Compressor output control
5
ƒ
Electronic expansion valve control
2
ƒ
Defrosting operation control
7
ƒ
Low pressure protection control
7
ƒ
Crankcase heater control
9
Cooling
ƒ
Compressor startup control
4
ƒ
Compressor output control
5
ƒ
Electronic expansion valve control
2
ƒ
Outdoor fan control
3
ƒ
Crankcase heater control
9
3
Air side heat exchanger
refrigerant outlet temperature
sensor
T3
Heating
ƒ
Electronic expansion valve control
2
ƒ
Defrosting operation control
7
ƒ
Outdoor fan control
3
Cooling
ƒ
Compressor output control
5
ƒ
Outdoor fan control
3
4
Water side heat exchanger
refrigerant inlet (liquid pipe)
temperature sensor
T2B
Heating
ƒ
Compressor output control
5
DHW
5
Water side heat exchanger
refrigerant outlet (gas pipe)
temperature sensor
T2 Heating
ƒ
Freeze prevention control
10
6
Suction pipe temperature
sensor
Th
Heating
ƒ
Electronic expansion valve control
2
Cooling
7
Water side heat exchanger
water i nlet temperature
sensor
Tw_in
Heating
ƒ
Freeze prevention control
10
Cooling
8
Water side heat exchanger
water out let temperature
sensor
Tw_out
Heating
ƒ
Compressor output
5
and on/off control
6
ƒ
Freeze prevention control
10
Cooling
DHW
9
Backup electric heater water
outlet temperature sensor
T1
Heating
ƒ
Compressor output control
5
ƒ
Backup electric heater control
ƒ
DHW priority control
11
ƒ
Auto mode control
Cooling
ƒ
Compressor output
5
and on/off control
6
ƒ
Auto mode control
DHW
ƒ
Compressor output control
5
ƒ
Backup electric heater control
ƒ
DHW priority control
11
10
Auxiliary heat source water
outlet temperature sensor
T1B Heating
ƒ
Auxiliary heat source control
ƒ
Compressor output control
5
11 Room temperature sensor Ta
Heating
ƒ
Auto mode control
ƒ
Climate related curve
ƒ
Compressor output control
5 Cooling
12
Domestic hot water tank
temperature sensor
T5 DHW
ƒ
Disinfection operation control
ƒ
DHW tank immersion heater control
ƒ
Backup electric heater control
ƒ
Auxiliary heat source control
ƒ
Solar energy kit control
ƒ
Compressor output control
5
ƒ
DHW priority control
11
Notes:
1. Sensor names in this service manual referring to refrigerant flow is
named according refrigerant flow during cooling operation refer to
Part 2, 3 “Refrigerant Flow Diagrams”.
2. Refer to Part 3, 4.5 “Electronic Expansion Valve Control”.
3. Refer to Part 3, 4.6 “Outdoor Fan Control”.
4. Refer to Part 3, 3 “Startup Control”.
5. Refer to Part 3, 4.2 “Compressor Output Control”.
6. Refer to Part 3, 1 “Stop Operation”.
7. Refer to Part 3, 6.2 “Defrosting Operation”.
8. Refer to Part 3, 5.2 “Low Pressure Protection Control”.
9. Refer to Part 3, 2.1 “Crankcase Heater Control”.
10. Refer to Part 3, 2.2 “Freeze Prevention Control”.
11. Refer to Part 3, 6.4 “Fast DHW Operation”.
MUNDOCLIMA AEROTHERM V17 - BIBLOC