Daikin SkyAir RZQ200 · 250C7Y1B Service Manual page 70

SiBE26-701
2.3.5 Heating 2 (Startup Control / Control during Operation)
M1C
Compressor
[INV]
Outdoor unit fan M1F
Indoor unit fan MF
Electronic
expansion valve Y1E
(main)
Electronic
expansion valve Y2E
(subcooling)
Four way ralve Y3S
Solenoid valve for
venting receiver Y2S
gas
Solenoid valve for
Y1S
hot gas
Remarks
2.3.6 Heating 3 (Pump down Residual Operation / Oil Return Operation)
M1C
Compressor
[INV]
Outdoor unit fan M1F
Indoor unit fan MF
Electronic
expansion valve Y1E
(main)
Electronic
expansion valve Y2E
(subcooling)
Four way ralve Y3S
Solenoid valve for
venting receiver Y2S
gas
Solenoid valve for
Y1S
hot gas
Remarks
Function and Operation
"Heating startup control
Basic operation
"Low pressure protection
control"
"High pressure protection
control"
"Discharge pipe
"Startup control" temperature protection
control"
"Inverter current
protection control"
"Control by inverter fin
temperature"
According to "Startup "Heating operation high
control" outdoor air control"
"Startup control (indoor
No instruction
unit fan)"
"Startup control"
"Discharge pipe
"Electronic expansion
temperature protection
valve fixed open degree
control"
control"
"Startup control"
ON (*)
OFF
ON
*: When the four-way valve is OFF, switch the four-way valve.
"Heating pump down residual operation"
Basic operation
"High pressure protection
control"
"Discharge pipe
temperature protection
124Hz control"
"Inverter current
protection control"
"Control by inverter fin
temperature"
"Heating pump down
residual operation "
"Control before the
compressor stops (indoor
unit fan)"
EV fixed open degree 2
"Discharge pipe
"Electronic expansion
temperature protection
valve fixed open degree
control"
control"
0
ON
ON
"High pressure
"Movement of constant-
temperature protection
speed compressor"
control"
Compressor in operation
Protection control Basic operation
"Compressor step
control"
7 Step
No instruction
"Steady control (indoor
unit fan)"
"Electronic expansion
valve control"
0
ON
OFF
OFF
Compressor in operation
Protection control Basic operation
Fmin Hot oil return
= Oil return
implementation step
7 steps
"Electronic expansion
valve control"
0
ON
OFF
OFF
Outdoor Unit
In normal operation
Protection control
"High pressure protection
control"
"Discharge pipe
temperature protection
control"
"Inverter current
protection control"
"Control by inverter fin
temperature"
"Heating operation high
outdoor air control"
"Outdoor unit fan control"
"Discharge pipe
temperature protection
control"
"Low pressure protection
control"
"Oil return operation control"
Protection control
"High pressure protection
control"
"Discharge pipe
temperature protection
control"
"Inverter current
protection control"
"Control by inverter fin
temperature "
"Outdoor unit fan control"
"Discharge pipe
temperature protection
control"
"Low pressure protection
control"
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