Electra DNC series Service Manual page 85

CONTROL SYSTEM
5.0.2 Autofan in Automatic Cooling and Heating Mode will
activate "Cooling with Autofan Mode" and "Heating with
Autofan Mode" respectively.
•
For Cooling with Autofan, refer to Sect. 3.2.
•
For Heating with Autofan (RC and SH Group),
refer to Sect. 4.2.
•
For Heating with Autofan (RH Group), refer to
Sect. 4.4.
5.0.3 When the Auto Mode is started with SPT +/-0
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.
proper Auto Heat mode or Auto Cool will be started
whenever the RT reaches SPT-1
respectively.
5.0.4 For RC & SH units, Mode change between Auto Heat &
Auto Cool Modes are possible only after the COMP has
been OFF during the last T minutes.
Mode Change
Auto Cool to Auto Heat
Auto Heat to Auto Cool
5.0.5 For RH units, Mode change between Auto Heat & Auto
Cool Modes are possible after the COMP/HEs has
been OFF during the last T minutes.
Mode Change
Auto Cool to Auto Heat
Auto Heat to Auto Cool
5.0.6 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 Auto Heat are satisfied.
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 Auto Cool are satisfied.
5.1. Auto Cooling or Heating, RC or SH Groups
Mode: Auto
Temp: Selected desired temperature
Fan: Any
Timer: Any
I Feel: On or Off
Control function
Maintains room temp at desired level by selecting between cooling
and heating modes.
8-18
o
c or SPT+1
time, T
3 min
4 min
time, T
COMP off for 3 min
HEs off for 3 min
Revision Y05-01
CONTENT
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Service Manual - DNC Series