Mitsubishi Electric City Multi PEFY-P06NMSU-E Technical & Service Manual page 23

[ VII Microprocessor Control ]
Table.2
Heater OFF
Inlet air temp.
Heater control #A
Heater ON
Inlet air temp. < set temp.-4°F
Inlet air temp.
Heater output
<For heater>
The value "4°F" is modifiable from 1.8°F to 9°F by maintenance tool.
(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. (in case of PEFY-P06,08,12,15,18,24NMSU-E)
*1: DIP SW 3-4, CN24, and CN4Y
(2) On the Fresh air intake type units, the heater cannot be turned on with the fan setting set to OFF.
(3) Non-ducted models do not require the settings described in Section (1) above.
(4) Back-up heating will not be performed when the heater turns on while demand control is performed (not a request item).
(5) This is applicable only to the R410 series. Make the settings for the following dip switches on the outdoor unit control board
before switching on the power.
2. Fan control
By using the optional parts PAC-YU25HT, fan speed can be controlled.
Pattern
CN4Y for FAN control (YU25)
1
Disabled
2
3
Enabled
4
*depend on SW1-7/1-8
SW3-1 SW1-7
OFF OFF
OFF ON
OFF OFF
OFF ON
ON ON
*1 The fan operates at the same speed settings as shown in this table
during the Heating Thermo-OFF mode.
*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.
HWE08010
set temp.
Set temp.
Set temp.-1.8°F
Set temp.-4°F
ON
OFF
Duct unit PE/PD/PF-NR(NL)
(PEFY-P06,08,12,15,18,24NMSU-E)
DIP S/W3-4 (Indoor unit)
OFF
ON
OFF
ON
SW1-8 Fan speed *1
OFF Very low
OFF
ON Remote controller setting
ON
(Remote controller setting *2)
ON
(Remote controller setting *2)
Heater control #B Heater OFF
Inlet air temp.
Heater ON
Inlet air temp. < set temp.-1.8°F
Inlet air temp.
Heater output
Î
Low
Stop
Stop
- 16 -
set temp.
Set temp.
Set temp.-1.8°F
ON
OFF
Fan in defrost
Stop (Heater OFF)
L / LL / Set * (Heater ON)
Stop (Heater OFF)
Stop (Heater ON)
GB