Normal Operation; List Of Functions In Normal Operation - Daikin RTSQ20PY1 Service Manual

SiBE31-801_C

6. Normal Operation

6.1

List of Functions in Normal Operation

6.1.1 Outdoor Unit
Part Name
Compressor 1
Compressor 2
Compressor 3
Outdoor unit fan 1
Outdoor unit fan 2
Electronic expansion valve
(Main)
Electronic expansion valve
(Subcooling)
Electronic expansion valve
(Refrigerant charge)
Solenoid valve (Refrigerant
regulator gas purging pipe) SVG
Four way valve
(Heat exchanger switch)
Solenoid valve (Refrigerant
regulator liquid pipe)
Solenoid valve (Hot gas)
Solenoid valve (Main bypass) SVE
Solenoid valve (Refrigerant
regulator discharge pipe)
Solenoid valve (Refrigerant
regulator discharge pipe)
Four way valve (High/low
pressure gas pipe switch)
6.1.2 Function Unit
Part name
Compressor
Cooling fan
Liquid injection
Electronic
Two-stage
expansion valve
switching-1
Two-stage
switching-2
Hot gas
Two-stage
decompression
Solenoid valve
Bypass-1
Bypass-2
Liquid line switch
6.1.3 Indoor Unit
Indoor unit actuator
Fan M1F
Electronic
expansion Y1E
valve
*1: Refer to "6.3 Electronic Expansion Valve PI Control" on P.94.
Function
Electric
Symbol
Symbol
M1C
PI control, High pressure protection,

M2C Low pressure protection,
Td protection, INV protection,
M3C
M1F

Cooling fan control
M2F
EVM Y1E 480 pls
EVT Y3E PI control
EVJ Y2E 80 pls
Y1S ON for refrigerant recovery
20SA Y3S OFF
SVL Y4S ON for refrigerant recovery
SVP Y5S OFF
Y6S ON
SVO Y7S ON for refrigerant discharge
SVT Y8S ON for oil level control
20SB Y2S ON
Electric symbol
M1C
M1F
Y1E
Y2E1
Y2E2
Y1S
Y2S
Y3S
Y4S
Y5S
Thermostat ON unit
Stopping unit
Thermostat OFF unit
Thermostat ON unit
Stopping unit
Thermostat OFF unit
Normal Cooling
Cooling operation
OFF OFF
OFF OFF
0 pls 0 pls
0 pls 0 pls
0 pls 0 pls
OFF OFF
OFF OFF
ON ON
ON ON
OFF ON
Normal cooling
Remote controller setting
OFF
Remote controller setting
*
Normal opening 1
0 pls
0 pls

Normal Operation

Normal Heating
PI control, High pressure protection,
Low pressure protection,
Td protection, INV protection,
Fan step No.7 or No.8
PI control
PI control
80 pls
ON for refrigerant recovery
ON
ON for refrigerant recovery
OFF
OFF
ON for refrigerant discharge
ON for oil level control
OFF
Heating operation
Normal Low outdoor air temp.
PI control
Cooling fan control
Discharge
superheated
degree control
760 pls (fully open)
760 pls (fully open)
OFF
ON
OFF
OFF
OFF
Normal heating
Remote controller setting
OFF
LL
Normal opening
192 pls
192 pls
*
1
90