Daikin VRV-WIII RWEYQ72PTJU Service Manual page 71

SiUS30-1301
7.3.1 Cooling Operation Mode
Parts Name
Inverter compressor
Inverter cooling fan
Four-way valve (Main)
Four-way valve (Sub)
Electronic expansion valve (Main)
Electronic expansion valve (Subcooling)
Solenoid valve (Hot gas)
Solenoid valve (Oil return of water heat
exchanger)
Solenoid valve (Receiver gas charging)
Solenoid valve (Receiver gas discharging)
Solenoid valve (Non-operating unit liquid pipe
closing)
Indoor unit fan (Cooling)
Indoor unit electronic expansion valve (Cooling)
Ending condition
7.3.2 Heating & Cooling/Heating Simultaneous Mode
Parts Name
Inverter compressor
Inverter cooling fan
Four-way valve (Main)
Four-way valve (Sub)
Electronic expansion valve (Main)
Electronic expansion valve (Subcooling)
Solenoid valve (Hot gas)
Solenoid valve (Oil return of water heat
exchanger)
Solenoid valve (Receiver gas charging)
Solenoid valve (Receiver gas discharging)
Solenoid valve (Non-operating unit liquid pipe
closing)
Indoor unit fan (Cooling)
Indoor unit electronic expansion valve (Cooling)
Indoor unit fan (Heating)
Indoor unit electronic expansion valve (Heating)
Ending condition
Function and Control
Electric
Symbol Master Unit Operation
Symbol
— M1C
— M1F, M2F Inverter cooling fan control Inverter cooling fan control
20S1 Y5S
20S2 Y7S
EV1 Y1E
EV3 Y3E
SVP Y1S
SVE Y2S
SVL Y3S
SVG Y4S
SVSL Y6S
— M1F, M2F
EV Y1E
Electric
Symbol Master Unit Operation
Symbol
— M1C
— M1F, M2F Inverter cooling fan control Inverter cooling fan control
20S1 Y5S
20S2 Y7S
Y7S = OFF: 2000 pulse
EV1 Y1E
Y7S = ON:
EV3 Y3E
SVP Y1S
SVE Y2S
SVL Y3S
SVG Y4S
SVSL Y6S
— M1F, M2F
EV Y1E
— M1F, M2F
EV Y1E
Slave Unit Operation
Current step
OFF
OFF
2000 pulse
0 pls
ON
OFF
OFF
OFF
OFF
No instruction
All 0 pulse
Max. 5 minutes
Slave Unit Operation
Current step
ON
Holding
0 pulse
0 pulse
ON
OFF
OFF
OFF
OFF
No instruction
All 0 pulse
No instruction
All 500 pulse
Max. 5 minutes
Special Operation
OFF
OFF
OFF
0 pulse
0 pulse
OFF
OFF
OFF
OFF
ON
OFF
ON
Holding
0 pulse
0 pulse
OFF
OFF
OFF
OFF
ON
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