Panasonic U-10MF1E8 Service Manual page 19
3-way system
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Also See for U-10MF1E8:
- Installation instructions manual (186 pages) ,
- Operating instructions manual (180 pages) ,
- Instruction manual (80 pages)
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4. Special Controls
4-3-4. Outdoor units where defrost occurs
Even if the total time has not reached 35 minutes, if there is 1 or more outdoor units that fulfills the defrost
detection conditions, all operating outdoor units perform defrost control at the same time.
* Defrost control is also performed at outdoor units where the outdoor unit heat exchanger is not functioning as an
evaporator (such as stopped outdoor units).
4-3-5. Reverse cycle defrost
Reverse cycle defrost is performed in systems where only 1 outdoor unit is connected to the refrigerant system.
Defrost flow
E: Evaporator operation
C: Condenser operation
S: Shut off
E C: Switching from evaporator operation to condenser operation
C E: Switching from condenser operation to evaporator operation
Outdoor unit status
Compressor
Remote
Mode
Controller
Stop
Fan
Cooling
Heating
Auto
Auto. Cooling
Auto. Heating
Time
*
Type E1 performs "E
3 minutes.
*1: Function when a common use solenoid valve kit is used and there are more than one (1) indoor unit in the
cooling mode within the same solenoid valve kit.
*2: Function when a common use solenoid valve kit is used and here are more than one (1) indoor unit in the
heating mode within the same solenoid valve kit.
Defrost preparation
*1 (Cooling)
*2 (Heating)
*1 (Cooling)
*2 (Heating)
Thermostat ON
Thermostat OFF
Thermostat ON
Thermostat OFF
Thermostat ON
Thermostat OFF
Thermostat ON
Thermostat OFF
C" for 3 minutes after defrost ends. Therefore, the thermostat remains OFF for
Defrost in progress
E
C
C
Stopped
Operating
S
E
S
E
C
E
E
S
E
S
E
C
E
E
E
E
S
E
C
E
E
C
E
E
E
E
S
E
C
E
E
C
E
E
1 min
Max. 12 min
1 - 13
3-WAY SYSTEM
Control Functions
Defrost end
C
E
Stopped
S
S
E
C
Defrost
S
end
S
judgment
E
C
E
S
E
C
E
C
E
S
E
C
E
C
1 min
1
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