Panasonic U-4LE1E5 Service Manual page 23

9. Indoor Special Control
9-5. Discharge air temperature control
For Type F1, M1, E1 indoor units, discharge air temperature is controlled from the CCU to prevent condensation
on duct surface in cooling operation. The CCU monitors and adjusts
by compressor capacity and MOV operation in the indoor unit.
* To: Cooling (Discharge air temperature) - (Preset discharge air temperature)
Heating (Preset discharge air temperature) - (Discharge air temperature)
Situation in which indoor unit stops by discharge air temperature control
- To -3.5deg, and this condition continues 7 minutes
- To -2.0deg, and this condition continues (20 + XX) minutes
*The above mentioned "XX" is able to set in EEPROM of the main outdoor unit
EEPROM setting in main outdoor unit
CODE: E1
Setting No
-20
-19
-18
0
10
*In heating operation, this function virtually does not work because preset discharge air temperature is 50 °C and
this is sufficiently higher than actual discharge temperature.
For preset discharge air temperature that is set in the indoor unit is able to change, refer to manual for indoor unit.
9-6. Indoor Unit Auto Restart Setting
Detail setting items of indoor unit (28 : auto restart setting) can be changed instantly from the outdoor unit.
Settings at factory shipping of indoor unit is set to "00" (incapable of auto restart setting).
Outdoor unit EEPROM code : Set "EF" as shown in the following table.
Setting No
0 Non (at factory shipment)
1 Indoor unit EEPROM code : Set "28" to "01"(capable of auto restart setting)
2 Indoor unit EEPROM code : Set "28" to "00"(incapable of auto restart setting)
NOTE
This setting change for communication should only be performed at the initial communication setting.
CCU recognizes the number of indoor units at the time of initial setting's communication and stores in
memory at outdoor EEPROM code "EE".
When changing code "EF" after indoor communication setup, set "EE" (number of indoor units' connection)
to the setting at shipment "0" in order to initialize the recognition of the number of indoor units.
XX
-20
-19
-18
Interval of "1"
0 (factory preset mode)
10
To of indoor unit. The adjustment is made
Control operation
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Mini VRF SYSTEM
Control Functions
1