79
Outdoor Unit Functions
Due to our policy of continuous product innovation, some specifications may change without notification.
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Liquid
Pipe
Closed Open
Vapor
Pipe
Not Used
(Keep
Closed)
Liquid
Pipe
Vapor
Pipe
Not Used
(Keep
Closed)
Liquid
Pipe
Vapor
Pipe
Not Used
(Keep
Closed)
Liquid pipe
For Heat Pump Systems,
Not Used (Keep Closed)
Service Port
Vapor pipe
Master Outdoor Unit
Heating Mode
Slave 2 Outdoor Unit
Heating Mode
Slave 1 Outdoor Unit
Heating Mode
Pump Out for Heat Pump Systems
Example of Pump Out Function When Slave2 Outdoor Unit Experiences Inverter Compressor Failure.
1. Verify the liquid pipe of the outdoor unit is closed for Pump Out
operation. Open the vapor pipe service valve.
2. Operate Pump Out function.
3. Close the vapor pipe service valve of unit after Pump Out is
complete.
4. Replace inverter compressor, eliminate remaining refrigerant of
the corresponding outdoor unit, and perform Vacuum procedure
using Vacuum Mode.
5. Add refrigerant using the Refrigerant Auto Charge Function.
Figure 29: Close Up of Heat Pump Service Ports and Refrigerant
Charge Valve.
OTHER CONTROLS
Setting Optional Modes