Daikin RTSQ20PY1 Service Manual page 121

SiBE31-801_C
<Function unit>
Elect.
Actuator
Symbol
Compressor M1C
Electronic
expansion valve Y1E
(Liquid injection)
Electronic
expansion valve
Y2E1
(Two-stage
selection 1)
Electronic
expansion valve
Y2E2
(Two-stage
selection 2)
Solenoid valve
Y1S
(Hot gas)
Solenoid valve
(Two-stage Y2S
decompression)
Solenoid valve
Y3S
(Bypass 1)
Solenoid valve
Y4S
(Bypass 2)
Solenoid valve
(Liquid line Y5S
selection)
Ending Conditions
<Indoor Unit>
Part Name Elect. symbol
Fan M1F
Electronic
Y1E
expansion valve
Function
In preparation
Step 1
0 Hz 0 Hz
0 pls 0 pls
200 pls 0 pls
200 pls 0 pls
OFF ON
OFF OFF
ON ON
ON ON
ON ON
or
170 sec.
Indoor unit actuator operation during heating oil return operation
Thermo. ON unit
Unit not in operation
Thermo. OFF unit
Thermo. ON unit
Unit not in operation
Thermo. OFF unit
In oil return
operation
Step 2
210 Hz→52 Hz
0 pls
0 pls
0 pls
ON
OFF
ON
ON
ON
• After • After
a lapse a lapse
or
of 1 min. of 4 min.
• Pc-Pe • TsA-Te
<0.5MPa <5°C
Special Control
After oil return
operation
0 Hz
0 pls
200 pls
200 pls
OFF
OFF
ON
ON
ON
• After
a lapse
or
of 1 min.
• Pc-Pe
<0.5MPa
OFF
OFF
OFF
Oil return EV degree
256 pls
Oil return EV degree
110