Panasonic U-8MF2E8, Service Manual

Page: 44 / 153

3WAY SYSTEM
Control Functions
1 - 36
1
9. Defrost Control
E
C→E
E→C
S
C
: Evaporator operation
*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 there are more than one (1) indoor unit in the
heating mode within the same solenoid valve kit.
*3 Only for High Static Pressure Ducted Type Indoor Unit (Type E1)
: Switching from condenser operation to evaporator operation
: Switching from evaporator operation to condenser operation
: Stop or shut off the refrigerant
: Condenser operation
Normal
operation
Normal
operation
Outdoor unit cycle defrost processing
E E→C C C→E E E E
Outdoor
unit
delay-start
control
Defrost
group
1st
Defrost
group
2nd
㻿㼣㼕㼠㼏㼔 㻿㼣㼕㼠㼏㼔
Control time - 1 min Max 7 min 1 min Max 8 min 1 min -
Defrost
occurs
Outdoor
unit(s)
Indoor
units
Defrost
occurs
first
second
Mode
Stop
Heat
exchanger
Compressor
Fan
Heat
exchanger
ON or S Compressor
Fan
Thermostat
*1(Cooling)
*2(Heating)
Fan *1(Cooling)
*2(Heating)
Cooling
Heating
ON
OFF
ON
OFF
E or S
S
ON
ON
ON or S
S
S
S
S
S
E
S
C
C
E
S
ON
OFF
OFF
ON
S
C
S
S
C
E
S
C
C
E
S
ON
OFF
OFF
ON
S
C
S
S
C
E
S
C
C
E→C
S
OFF
OFF
OFF
OFF
S
C
S
S
C
E
S
C
C
C
S
OFF
ON
ON
OFF
S
C
S
S
C
E
S
C
C
C→E
S
OFF
OFF
OFF
OFF
S
C
S
S
C
E
S
C
C
E or S
S
ON
ON
ON or S
ON or S
S
C
S
S
C
E
S
C
C
OFF *3 S S S S S S S
SM830226-00̲3WAY ECO-i SYSTEM.in36 36 SM830226-00̲3WAY ECO-i SYSTEM.in36 36 2013/02/13 11:52:28 2013/02/13 11:52:28