Si-71A Function Details
Explanation of Function Operation 65
5.2 Outdoor Unit
Note:
Following functions are for R(Y)71~140K only. Please refer “Split G series” manual for smaller size outdoor
units.
5.2.1 4-way Valve Control
4-way valves conduct power when heating. Changeover switching is carried out only during operation.
4-way valve ON : During heating except when defrosting
4-way valve OFF : During cooling, program dry and defrosting
5.2.2 Operation, Stop and Thermostat Control
Thermostat Control
Basic thermostat ON/OFF operations.......
Thermostat turns ON when
∆
Tr is 1°C.
Thermostat turns OFF when
∆
Tr is 0°C.
Initial operation 2.5 min Defrosting Forced operation
→
Room temperature control prevents thermostat from turning OFF.
∗
Regarding
∆
Tr
In cooling operation
∆
Tr = Indoor unit suction air temperature (Tr) - Temperature set by remote controller
In heating operation
∆
Tr = Temperature set by remote controller - Tr
Compressor
Shutdown
Operation
„
In heating operation, the 4-way valve is energized.
„
In heating operation of heat-pump units and when the thermostat is OFF in cooling-only units due to the
room temperature level, the compressor stops 5 seconds after the motorized valve closes.
To Next Page
Loading...