Outline of Control (Outdoor Unit) < Symbols using in this manual > Si33-105
62 Function R407C PLUS Series Heat Recovery System
4-way valve changeover control (starting control)
End the
H
4 control
Step No.
INV
SVP
Outdoor
EV 1,2
(Sub unit side)
Outdoor
EV 3
(Sub unit side)
Outdoor
fan
20S1
20S2
20S3
SVS
(Aux. condensor)
Indoor EV
(Heating unit)
Indoor fan
(Heating unit)
Indoor EV
(Cooling
thermostat
ON unit)
Indoor fan
(Cooling
thermostat
ON unit)
BS unit
Solenoid valve
According to protection control
According to operation mode
According to operation mode
According to operation mode
According to operation mode
Holding previous mode
Holding previous mode
Holding previous mode
0 pls instruction
0 pls instruction
200 pls instruction
According to operation mode
SH control
SC control
Fan = OFF
instruction
Cancellation the
instruction with
H
3
Cancellation the
instruction with
H
3
H
1 41Hz
0123
All solenoid valves = OFF
Equalization prior to startup
Max. 15 min (including 5 min for restarting
standby during unit stops)
When HP-LP<0.2MPa, compressor turns on.
30s
INV
charging
BS unit solenoid valve
changeover (Max. 16 sec)
Thermostat
ON
10s
0 pls
150 pls
H+ON(+ON+ON)
ON+OFF
H+ON(+ON+ON)
ON+OFF
H
2
0 pls
ON
ON
OFF
OFF
(V2574)
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