149
4.System principle diagram
Cooling circle:
the Compressor inhales the low-temperature and low-pressure refrigerant vapor from the evaporator, and
vapor be turned into high-temperature and high-pressure gas then enters into condenser, the
high-temperature and high-pressure refrigerant gas and outdoor air make heat exchange in the
condenser, the compressed vapor is then cooled by heat exchange with the outside air, so that the vapor
condenses to be a high-temperature and high-pressure fluid, and then through capillary throttling to
cooled, low pressure, then the liquid enters into the evaporator and two-phase of gas and liquid refrigerant
in the evaporator completely evaporate, thereby cooling the indoor air; from evaporator the vapor is
inhaled into compressor again, so it runs continuously cycle to cycle, cooled air is continuous supplied to
the air-conditioned area though Duct by fan motor.
Heating cycle:
It is the contrary cycle of cooling cycle, at this moment the 4-way valve changes direction, and make
refrigerant flow to direction changer, that is, the vapor discharged from the compressor enters into the
indoor heat exchanger to condense, the condensation of refrigerant after the capillary expenditure,
evaporates in the outdoor heat exchanger, and then inhaled by the compressor after evaporation, so it
runs continuously periodically , the heated air is continuous supplied to the air-conditioned area though
duct by fan motor.
AL–H12/4R1(U), AL–H18/4R1(U)
消
音
器
四通换向阀
冷凝器
风
扇
离心风扇
蒸发器
辅助电加热
截止阀(液侧)
截止阀(气侧)
单向阀 制冷毛细管
制热毛细管
制冷时制冷剂流动方向
制热时制冷剂流动方向
T
外盘
T
冷中
Evaporator
Stopping Valve (Gas)
Fan
4 Way Valve
T(Mild-Condenser)
Centrifugal
T(Ambient)
T(Evaporator)
Auxiliary Electric Heater
T(Condenser)
Stopping Valve (Liquid)
Capillary (Heating)
Capillary (Cooling)
One Way Valve
M
uf
fl
e
Refrigerant flow direction in Cooling
Refrigerant flow direction in Heating
Summary of Contents for ICC(ICA)-**HR-SA6-NI
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Page 104: ...186 7 Failure analysis Wired controller communication failure ...
Page 105: ...187 Communication failure between indoor and outdoor unit ...
Page 106: ...188 Outdoor protection phase sequence ...
Page 107: ...189 Cooling high pressure protection ...
Page 108: ...190 Heating high pressure protection ...
Page 109: ...191 Cooling low pressure protection ...
Page 110: ...192 Heating low pressure protection ...
Page 111: ...193 Cooling exhaust temperature protection ...
Page 112: ...194 Heating exhaust temperature protection ...
Page 113: ...195 Refrigerant shortage or four way valve failure protection ...
Page 114: ...196 Sensor failure protection ...
Page 115: ...197 No action after power on ...
Page 116: ...198 Poor effect ...
Page 117: ...199 ...
Page 118: ...200 Abnormal sound or viberation ...
Page 119: ...201 ...
Page 120: ...202 Abnormal odor ...
Page 121: ...203 Air switch action when air conditioner starting up ...
Page 122: ...204 Air conditioner water leakage ...