Panasonic U-8ME1E81 Service Manual page 32

7. Oil Control
7-5-2. Simplified flow of system oil recovery control
System oil recovery control shall be performed as the flow mentioned below.
Normal operation
→ Time before oil recovery 1 minute stop
→ Refrigerant oil recovery control between systems (Oil recovery control processing time)
→ Time after oil recovery 1 minute stop
→ Normal operation
1
-Cooling cycle
Control time
Outdoor units
MOV
Indoor RAP valve kit
units
Fan
-Heating cycle
Control time
Outdoor units
MOV
Indoor RAP valve kit
units
Fan
Maximum 2 minutes (Stops once before and once after control.)
All outdoor units operate at maximum horsepower.
MOV at all indoor units operate at a fixed pulse according to the indoor unit capacity.
RAP valve kits at all indoor units operate in Cooling mode (OFF status.)
Fan operates at the set fan speed, or stops depending on the operation mode of the
indoor unit.
Maximum 2 minutes (Stops once before and once after control.)
All outdoor units operate at maximum horsepower.
MOV at all indoor units operate at 250 pulse.
RAP valve kits at all indoor units operate in Heating mode (ON status.)
Fan operates at the set fan speed, stops or operates at a very low speed, depending
on the indoor unit operation mode.
Control Functions - Outdoor Unit
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2WAY SYSTEM