Panasonic U-8ME1E8E Service Manual page 36

9. Defrost Control
9-6. Reverse Cycle Defrost
If there is 1 outdoor unit, a reverse cycle defrost will be carried out.
• Defrost flow E: Evaporator operation
C: Condenser operation
E C: Switching from evaporator operation to condenser operation
C E: Switching from condenser operation to evaporator operation
Outdoor unit status
Compressor
Stopped
Fan (only)
Indoor
Cooling mode
unit
Heating mode
Time
There is no stop time before and after defrosting operation in factory setting.
However, it is possible to stop by setting.
For the maximum defrost time, refer to the table in Sec. 9-5
EEPROM setting in main outdoor unit
CODE: F0 (Time before defrosting 1)
F1 (Time before defrosting 2)
F2 (Time after defrosting 1)
F3 (Time after defrosting 2)
Setting No Time above mention
Non stop (factory preset
-1
mode)
0 0 seconds
30 30 seconds
60 60 seconds
Interval of "30"
570 570 seconds
600 600 seconds
Defrost preparation
E C
Stopped
C E
C E
Thermostat ON C E
Thermostat OFF C E
Thermostat ON
C E
Thermostat OFF
C E
Time before
defrosting 1 + 2
Control Functions-Outdoor Unit
Defrost in progress
E C
C
Operating
Operating
E
E
E E
E
E
E E
E
E
E
E
1 min Max. 10 min
1 - 29
2WAY SYSTEM
Defrost end
C E
Stopped
E C
E C
Defrost
end E C
judgment
E C
E C
E C
Time after
defrosting 1 + 2
1