Airwell EDS25 Service Manual page 64

CONTROL SYSTEM
12.6 Automatic Cooling or Heating
12.6.1 Automatic Cooling or Heating - General
Switching-temperature between Cooling and Heating is SPT ± 3
Autofan in Automatic Cooling and Heating Mode will activate "Cooling
with Autofan Mode" and "Heating with Autofan Mode" respectively.
When the Auto Mode is started with SPT +/-0
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
For RC & SH units, Mode change between Auto Heat & Auto Cool
Modes is possible only after the COMP has been OFF during the
last T minutes.
When unit is changed form Cool/Dry mode to Auto Mode, the unit
will continue to operate at (Auto) Cool Mode until the conditions for
switching from Auto Cool to
Similarly, when unit is changed from Heat Mode to Auto Mode, the
unit will continue to operate at (Auto) Heat Mode until the conditions
for switching from Auto Heat to
12-14
o o
c or SPT+1 c respectively.
Mode Change
Auto Cool to Auto Heat
Auto Heat to Auto Cool
Revision
o c, the unit will not select
time, T
3 min
4 min
0 Service Manual - EDS
o
c.