Normal Operation - Daikin RQYQ140-180PY1 Service Manual

Detailed Control Functions
2.5

Normal Operation

2.5.1 List of Functions in Normal Operation
<Outdoor Unit>
Part Name
Compressor
Outdoor unit fan
Electronic expansion valve
(Main)
Electronic expansion valve
(Subcooling)
Electronic expansion valve
(Refrigerant charge)
Solenoid valve (Refrigerant
regulator hot gas)
Solenoid valve (Refrigerant
regulator liquid pipe)
Solenoid valve (Refrigerant
regulator gas vent pipe)
Solenoid valve (Hot gas)
Solenoid valve (Circuit of oil
return)
Four way valve (Heat
exchanger switch)
Four way valve (Dual
pressure gas pipe)
Four way valve (Mixing unit)
Solenoid valve (Mixing unit
inlet)
<Indoor Unit>
Part Name
Indoor unit fan
Electronic expansion valve
(Main)
<BS Unit>
Part Name
Electronic expansion valve
(EVSC)
Electronic expansion valve
(EVHS)
Electronic expansion valve
(EVLS)
Electronic expansion valve
(EVH)
Electronic expansion valve
(EVL)
39
Electric
Normal Cooling
Symbol
PI control, High pressure
protection, Low pressure
M1C
protection, Td protection,
INV protection
M1F Cooling fan control
Y1E 480 pls
Y3E PI control
41 pls for refrigerant
Y2E
discharge
ON for refrigerant
Y1S
discharge
ON for refrigerant
Y2S
recovery
ON for refrigerant
Y3S
recovery
Y4S OFF
Y5S ON
Y6S OFF
Y7S ON
Y8S OFF
Y9S OFF
Normal cooling
Electric
Thermostat Thermostat
Symbol
ON unit OFF unit
Remote Remote
M1F controller controller
setting
Normal
Y1E
opening
Electric
Normal cooling
Symbol
Y1E
Y2E 480 pls ( fully opened )
Y3E 480 pls ( fully opened )
Y4E 760 pls ( fully opened )
Y5E 760 pls ( fully opened )
Normal Heating
PI control, High pressure
protection, Low pressure
protection, Td protection,
INV protection
• Outdoor unit heat
exchanger: Condenser /
Cooling fan control
• Outdoor unit heat
exchanger: Evaporator /
Fan step 7 or 8
• Outdoor unit heat
exchanger: Condenser /
Liquid pressure control
• Outdoor unit heat
exchanger: Evaporator /
PI control
PI control
41 pls for refrigerant
discharge
ON for refrigerant
discharge
ON for refrigerant
recovery
ON for refrigerant
recovery
OFF
ON
• Outdoor unit heat
exchanger: Condenser /
OFF
• Outdoor unit heat
exchanger: Evaporator /
ON
OFF
OFF
OFF
Stopping Thermostat
unit
OFF controller
setting
0 pls 0 pls
0 pls
SiBE341001
Normal Simultaneous
Cooling / Heating
PI control, High pressure
protection, Low pressure
protection, Td protection,
INV protection
• Outdoor unit heat
exchanger: Condenser /
Cooling fan control
• Outdoor unit heat
exchanger: Evaporator /
Fan step 7 or 8
• Outdoor unit heat
exchanger: Condenser /
Liquid pressure control
• Outdoor unit heat
exchanger: Evaporator /
PI control
PI control
41 pls for refrigerant
discharge
ON for refrigerant
discharge
ON for refrigerant
recovery
ON for refrigerant
recovery
OFF
ON
• Outdoor unit heat
exchanger: Condenser /
OFF
• Outdoor unit heat
exchanger: Evaporator /
ON
OFF
OFF
OFF
Normal heating
Thermostat
ON unit OFF unit
Remote
LL
setting
Normal
192 pls
opening
Normal heating
0 pls
480 pls ( fully opened )
0 pls
760 pls ( fully opened )
0 pls
Stopping
unit
OFF
192 pls
Function