58
Suction temperature
sensor (ThS)
Controls the degree of opening of PMV 1.
Stops operation when ThS > 40°C for 10 minutes.
Discharge temperature
sensor (ThD1, ThD2)
Controls the degree of opening of PMV 1.
Stops operation when the discharge temperature > 130°C.
Outdoor unit heat
exchanger sensor (TE)
Heating operation
Controls the defrost operation.
Controls the high pressure release valve SV1.
Controls the Outdoor unit fan operation.
Controls the hot gas bypass SV2.
Outdoor temperature
sensor (ThO)
3-Pipe ONLY
Controls the Outdoor unit fan operation.
Prevents heating operation when ThO > 25°C.
High pressure switch
Stops operation when Pd > 30kgf/cm
2
G.
Low pressure switch
Stops operation when suction pressure < 0.25kgf/cm
2
G:-
• After 30 seconds for cooling operation.
• After 10 minutes for heating operation.
The low pressure switch is ignored during
defrost operation.
Controls the changeover from Outdoor unit main heat exchanger to sub heat
exchanger. (MAR-M104HTM8-1-PE / MAR-F104HTM8-1-PE only)
Controls the hot gas bypass SV2.
Controls the Outdoor unit fan operation.
Determines the frequency of the inverter compressor and the ON/OFF
status of D.O.L compressor.
Discharge pressure
sensor
10.7 Outdoor unit – Sensor and switch operation.
10.6 Multi controller sensor operation.
According to a difference between the evaporator outlet temperature and
(ThA, B, C, D) saturation temperature (ThX):
a.
Performs Superheat control.
(cooling operation)
b.
Determines the degree of opening of PMV 2.
(cooling dominant operation – 3-Pipe ONLY)
Temperature
sensor
}
}
}
MAR-M104HTM8-1-PE,
MAR-F104HTM8-1-PE
only
MAR-M104HTM8-1-PE,
MAR-F104HTM8-1-PE
only
MAR-M104HTM8-1-PE,
MAR-F104HTM8-1-PE
only
Summary of Contents for MAR-C104M8-1-PE
Page 2: ......
Page 22: ......
Page 58: ...61 13 EXPLODED VIEWS AND SERVICE PARTS LISTS 13 1 Outdoor Unit MAR C104M8 1 PE ...
Page 60: ...63 13 3 Outdoor Units MAR M104HTM8 1 PE MAR F104HTM8 1 PE ...
Page 63: ...66 13 6 Outdoor unit electrical parts assembly MAR C104M8 1 PE ...
Page 65: ...68 MAR M104HTM8 1 PE MAR F104HTM8 1 PE ...
Page 72: ......