Panasonic U-8ME1E81 Service Manual page 37

9. Defrost Control
9. Defrost Control
9-5-2. Simplified Flow of Outdoor Unit Cycle Defrost
Whole process
Outdoor unit cycle defrost shall be performed as the flow mentioned below.
(0) Normal operation
(1) Outdoor unit cycle defrost processing time
(2) 4-way valve adjustment control
(3) Normal operation
Outdoor Unit cycle defrost process
Outdoor unit cycle defrost is always completed in 2 defrost operations.
(1) When there are 2 outdoor units
Defrost
outdoor unit
(2) When there are 3 outdoor units
Defrost
Defrost
outdoor unit
outdoor unit
First operation
Evaporator
outdoor unit
First operation
Evaporator
outdoor unit
Control Functions-Outdoor Unit
Control Functions-Outdoor Unit
Switch
Evaporator
outdoor unit
Second operation
Switch
Evaporator
outdoor unit
Second operation
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2WAY SYSTEM
2WAY SYSTEM
Defrost
outdoor unit
Evaporator Defrost
outdoor unit outdoor unit
1