12-15
CONTROL SYSTEM
SM DLSDCI 3-A.1 GB
12.4.4.4 Temperature Compensation
A compensation value of 2-4 degrees is reduced from room temperature reading (except when in I-Feel mode), to
compensate for temperature difference between high and low areas in the heated room, and for coil heat radiation
on room thermistor.
The temperature compensation can be enabled/disabled by closing/opening J2 on the indoor unit controller.
No compensation will be activated in Forced operation modes.
12.4.4.5 Indoor Fan Control in Heat Mode
When in heat mode, including protections and except Deicing, and when the conditions in the table below are
fulfilled, IFAN will be working according to the graph below.
12.4.5
Automatic Cooling or Heating
12.4.5.1 Automatic Cooling or Heating - General
a. Mode Definition
Mode: AUTO
Temp: Selected desired temperature
Fan: Any
Timer: Any
I-FEEL: ON or OFF
12.4.5.2 Control Functions
a. Switching-temperature between Cooling and Heating is SPT ± 3
O
C.
b. When the AUTO Mode is started with SPT +/-0
O
C, the unit will not select Auto Heat
or Auto Cool mode immediately. Instead, the unit will be in a temporary FAN Mode
with IFAN operating at low speed. The proper Auto Heat mode or Auto Cool will be
started whenever the RT reaches SPT-1
O
C or SPT+1
O
C respectively.
c. Mode change between Auto Heat & Auto Cool Modes is possible only after the
COMP has been OFF during the last T minutes.
Mode Change
Time, T
Auto Cool to Auto Heat
3 min
Auto Heat to Auto Cool
4 min
d. When unit is changed form Cool/Dry Mode to Auto Mode, the unit will continue to
operate in (Auto) Cool Mode until the conditions for switching from Auto Cool to
Auto Heat are satisfied.
e. When unit is changed from Heat Mode to Auto Mode, the unit will continue to
operate in (Auto) Heat Mode until the conditions for switching from Auto Heat to
Auto Cool are satisfied.
