Daikin VRV - WII Service Manual page 93

Special Operation
7.3.2 Heating & Simultaneous Cooling/Heating Mode
Parts name
Compressor
Inverter cooling fan
4 way valve 1
4 way valve 2
Main heat exchanger
electronic exp. valve
Sub-cooling electronic
exp. valve
Hot gas bypass solenoid
valve
Water heat exch. oil return
solenoid valve
Receiver gas charging
solenoid valve
Receiver gas discharge
solenoid valve
Non-operation unit liquid
pipe stop solenoid valve
Indoor cooling unit fan
Indoor cooling unit
expansion valve
Indoor heating unit fan
Indoor heating unit
expansion valve
BS 20RH
BS 20RT
Ending condition
80
Electrical
Symbol
symbol
— (M1C)
— (M1, 2F)
20S1 (Y5S)
20S2 (Y7S)
EV1 (Y1E)
EV3 (Y3E)
SVP (Y1S)
SVE (Y2S)
SVL (Y3S)
SVG (Y4S)
SVSL (Y6S)
— (M1, 2F)
EV (Y1E)
— (M1, 2F)
EV (Y1E)
20RH (Y3S)
20RT (Y1S)
Master unit operation
Current step
Inverter cooling fan control
ON
Holding
20S2=OFF: 2000 pulse
20S2=ON : 0 pulse
0 pulse
ON
OFF
OFF
OFF
OFF
No instruction
All 0 pulse
No instruction
All 500 pulse
BS unit control
OFF
Slave unit operation
OFF
Inverter cooling fan control
ON
Holding
0 pulse
0 pulse
OFF
OFF
OFF
OFF
ON
Max. 5 min.
SiUS30-604
Function