WH-ADC0916H9E8, WH-UD09HE8, WH-UD12HE8, WH-UD16HE8, WH-UX09HE8, WH-UX12HE8, WH-UX16HE8, WH-UQ09HE8, WH-UQ12HE8, WH-UQ16HE8 - Panasonic Air Conditioner Service Manual (repair manual). Page 121

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121 
  Deice operation time diagram 
 
a.  Deice mode 1 control: 
 
 
 
b.  Deice mode 2 control: 
 
 
 
OD fan
ID pump
Expansion valve
Four way valve
Compressor
Free
Free
ON
OFF
OFF
N
O
N
O
Free
5
7
6
4
9
8
3
2
1
ON
ON
Free
Free
max 9 minutes 30 seconds
deice 1
OD fan
OD fan
Main
Expansion valve
Bypass
Expansion valve
Four way valve
Sequence
Pump
Gas Bypass SV
Compressor
Deice mode 2
max 30 minutes
Normal
Deice
4~6
N
O
N
O
F
F
O
OFF
OFF
0
ON
ON
OFF
Free
Free
Free
Free
ON
OFF
OFF
1
2
3
4
5
6
7
8
Heating
operation
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