[
VII
Microprocessor Control ]
- 18 -
HWE09040
GB
(1) On the ducted model units (except the Fresh air intake type), turning on the heater with the fan setting set to OFF requires that
the DIP S/W and connectors on the indoor units*1 are set on site.
*1: DIP SW 3-4, CN24, and CN4Y (or CN22)
Fan control
Table.3
Heater control #A
Heater OFF
Inlet air temp.
set temp.
Heater ON
Inlet air temp. < set temp.-4°F
Heater control #B
Heater OFF
Inlet air temp.
set temp.
Heater ON
Inlet air temp. < set temp.-1.8°F
<For heater>
The value "4°F" is modifiable from 1.8°F to 9°F by maintenance tool.
Pattern
Duct unit PE/PD/PF-NR(NL)
Î
(PEFY-NMSU-E, PEFY-NMAU-E)
CN4Y or CN22 for FAN control
(YU25)
DIP S/W3-4 (Indoor unit)
Fan in defrost
1
Disabled
OFF
Stop (Heater OFF)
2
ON
L / LL / Set
*1
(Heater ON)
*1. depend on SW1-7/1-8
3
Enabled
OFF
Stop (Heater OFF)
4
ON
Stop (Heater ON)
SW3-1
SW1-7
SW1-8
Fan speed
*1
*1. The fan operates at the same speed settings as shown in this table during
the Heating Thermo-OFF mode.
OFF
OFF
OFF
Very low
OFF
ON
OFF
Low
OFF
OFF
ON
Remote controller setting
OFF
ON
ON
Stop
(Remote controller setting
*2
)
*2. If Pattern 2 in the table above is selected for the fan control pattern, the
fan will follow the setting of the remote controller.
ON
ON
ON
Stop
(Remote controller setting
*2
)
Set temp.
Set temp.-1.8°F
Set temp.-4°F
Inlet air temp.
Heater output
OFF
ON
Set temp.
Set temp.-1.8°F
Inlet air temp.
Heater output
OFF
ON
CN4Y or CN22 for FAN control
(PAC-YU25HT)
<Image>
Indoor unit Control board
