System Refrigerant Cycle Drawing - Toshiba R410A Service Manual

5. SYSTEM REFRIGERANT CYCLE DRAWING

5-1. Refrigerant Piping Systematic Diagram in System
Selection of operation mode
For the selection of each operation mode, refer to the below table:
"Stop Once" this means the system does not operate for 3 minutes after operation before update has stopped.
All cooling operation
(OFF)
Mainly cooling,
partly heating
cooperation (ON)
Before
update
Mainly heating,
partly cooling
operation (ON)
All heating operation
(ON)
Note) Phrases in the parentheses of the table indicate the status of the 4-way valve.
ON-OFF list of Flow Selector Unit (FS Unit) valve
Indoor operation mode
1. Stop (Remote controller OFF)
<All system stop>
2. Cooling thermo-OFF
3. Cooling thermo-ON
4. Heating thermo-OFF
5. Heating thermo-ON
6. "E04" error is being detected
Mainly cooling, partly
All cooling operation
heating cooperation
(OFF)
Operation continues
Operation continues
(ON à OFF)
Stop Once Operation continues
(ON à OFF)
Stop Once Operation continues
(ON à OFF)
Outline of control valve output of FS unit (Basic operation)
SVD
(High pressure
circuit valve)
OFF
<OFF>
OFF
OFF
ON
OFF
After update
Mainly heating, partly
cooling operation
(ON)
Operation continues
(OFF à ON) (OFF à ON)
Operation continues
(As ON)
(As ON)
Operation continues
(As ON) (As ON)
SVDD
(Pressure valve (Low pressure
<For delay>) circuit valve)
OFF
<OFF>
OFF
OFF
OFF
ON
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All heating operation
(ON)
(ON)
Stop Once
(OFF à ON)
Operation continues
(As ON)
Operation continues
(As ON)
SVS SVSS
(Reducing valve
<For delay>)
OFF ON
<OFF> <OFF>
OFF ON
ON ON
OFF OFF
OFF OFF