Basic Control; Normal Operation - Daikin RXYQ96PYDN Service Manual

Basic Control

6. Basic Control

6.1

Normal Operation

6.1.1 List of Functions in Normal Operation
Part Name
Compressor 1
Compressor 2
Outdoor unit fan 1
Outdoor unit fan 2
Electronic expansion valve
(Main)
Electronic expansion valve
(Subcooling)
Electronic expansion valve
(Refrigerant charge)
Four way valve
(Heat exchanger switch)
Four way valve (High/low
pressure gas pipe switch)
Solenoid valve (Main bypass)
Solenoid valve (Hot gas)
Solenoid valve (Refrigerant
regulator liquid pipe)
Solenoid valve (Refrigerant
regulator gas vent pipe)
Solenoid valve (Refrigerant
regulator exhaust pipe)
Solenoid valve (Refrigerant
regulator discharge pipe)
Indoor unit actuator
Fan
Electronic
expansion
valve
*1. PI control : Evaporator outlet superheated degree (SH) constant.
*2. PI control : Condenser outlet subcooled degree (SC) constant.
188
(Electric
Symbol)
Symbol
REYQ REMQ
PI control, High
M1C M1C
pressure protection,
Low pressure
⎯
protection,
Td protection,
M2C M2C
INV protection,
M1F M1F
⎯
Cooling fan control
M2F M2F
Y1E
EVM Y1E 1375 pls
Y3E
Y2E
EVT Y3E PI control
Y5E
EVJ Y4E Y2E 80 pls
Y2S
20SA Y3S OFF
Y9S
20SB Y8S Y2S ON
Y5S
SVE Y6S ON
Y10S
SVP Y4S Y5S OFF
Y4S ON for refrigerant
SVL Y3S
recovery
ON for refrigerant
SVG Y1S Y1S
recovery
ON for refrigerant
SVO Y7S Y7S
discharge
SVT Y6S Y8S ON for oil level control
Thermostat ON unit
Stopping unit
Thermostat OFF unit
Thermostat ON unit
Stopping unit
Thermostat OFF unit
Function of Functional Part
Normal Cooling 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
80 pls
Outdoor unit heat
exchanger: Condenser /
OFF
Outdoor unit heat
exchanger: Evaporator /
ON
OFF
OFF
OFF
ON for refrigerant
recovery
ON for refrigerant
recovery
ON for refrigerant
discharge
ON for oil level control
Normal cooling
Remote controller setting
OFF
Remote controller setting
Normal opening * 1
0 pls
0 pls
SiUS34-801A_b
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
80 pls
Outdoor unit heat
exchanger: Condenser /
OFF
Outdoor unit heat
exchanger: Evaporator /
ON
OFF
OFF
OFF
ON for refrigerant
recovery
ON for refrigerant
recovery
ON for refrigerant
discharge
ON for oil level control
Normal heating
Remote controller setting
OFF
LL
Normal opening * 2
192 pls
192 pls
VRVIII R-410A Heat Recovery 60Hz