Panasonic U-4LE1E5 Service Manual page 21

9. Indoor Special Control
9-3. Indoor Fan Speed Control
CCU intervenes in fan control of the indoor unit according to the state at the operating mode below.
The priority order of fan control by CCU is higher than that of indoor unit's.
9-3-1. Dry mode
Indoor unit fan operated in the dry mode is controlled from CCU as shown in the below figure.
DTi
+1
DTi = (Intake temperature of indoor unit) - (Preset temperature in remote controller)
9-3-2. Heating mode
Indoor unit fan operated in the heating mode is stopped from CCU
at the following condition.
- Discharge air temperature of indoor unit
- High pressure sensor temperature (HPS) in outdoor unit
- Liquid temperature (E1) in indoor unit
* "XX" is able to be set in EEPROM on the outdoor unit's PCB.
Fan speed set by remote controller
Fan speed is "L" when thermostat ON
Fan speed is "LL" when thermostat OFF
20°C+XX
20°C+XX
EEPROM setting in main outdoor unit
CODE: 2C
Setting No
25°C+XX
1 - 15
Mini VRF SYSTEM
Control Functions
XX
-10 -10
-9 -9
-8 -8
Interval of "1"
0 0
(factory preset mode)
20 20
1