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Daikin VRV III-S RXYMQ36 48PVJU Service Manual: Basic Control; Normal Operation

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Basic Control

2. Basic Control
2.1
Normal Operation
 Cooling Operation
Actuator
Compressor
Outdoor unit fan
Four-way valve (Y1S)
Main electronic expansion valve (EV1)
Subcooling electronic expansion valve
(EV3)
Hot gas bypass valve (SVP)
 Heating Operation
Actuator
Compressor
Outdoor unit fan
Four-way valve (Y1S)
Main electronic expansion valve (EV1)
Subcooling electronic expansion valve
(EV3)
Hot gas bypass valve (SVP)
Heating operation is not functional at an outdoor air temperature of 75°FDB or more.
32
Operation
Compressor PI control
Cooling fan control
OFF
480 pls
PI control
OFF
Operation
Compressor PI control
STEP 7 or 8
ON
PI control
PI control
OFF
Remarks
Used for high pressure protection control, low
pressure protection control, discharge pipe
temperature protection control, and compressor
operating frequency upper limit control with inverter
protection control.
This valve turns on with low pressure protection
control.
Remarks
Used for high pressure protection control, low
pressure protection control, discharge pipe
temperature protection control, and compressor
operating frequency upper limit control with inverter
protection control.
This valve turns on with low pressure protection
control.
SiUS34-907
Function

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  • cp shukla Feb 16, 2016 06:50:
    RXYQ18PAY6 service manual & vrv Fulform