Honeywell SDC Service Manual page 31

SDC / DHC Operation
Disabling / enabling default program P2 to P3
Disabling
"System Parameters" menu, program parameter = P1. All heating
circuits and the hot-water circuit solely refer to the default /
individually programmed switching times in the program P1
parameter. Program P1 does not appear in the display in this
operating mode (see 5.2.2 "Timeprograms" menu, pg. 55 and
5.2.3.2 Time program, pg. 72).
Enabling
"System Parameters" menu, program parameter = P1 to P3 (see
5.2.2 "Timeprograms" menu, pg. 55 and 5.2.3.2 Time program,
pg. 72).
An active automatic program appears in the basic display with the
Display
current date and time. If default programs P2 and P3 were
  
enabled, the corresponding symbol, , or , is also
displayed depending on the selected program. The symbols are
only displayed with the time program P1 to P3 active.
5.1.2.5.4 Manual summer operation (excluding heating operation)
With manual summer operation, only the hot-water circuit remains
operation and controls the heat generator temperature based on
the specified hot-water temperature and the specified hot-water
switching time program. Heating operation is stopped, and
protection from frost is provided. This feature is only available
when control mode is set to 1.
Setting See 5.1.2.5 "Operating mode" button (basic display) , pg. 26
Disabling / enabling default programs P2 to P3
Disabling
"System Parameters" menu, program parameter = P1. All heating
circuits and the hot-water circuit solely refer to the default /
individually programmed switching times in the time program = P1
parameter. Program P1 does not appear in the display in this
operating mode (see 5.2.2.1 Selection of the control circuit, pg. 56
and 5.2.3.2 Time program, pg. 72).
EN2H-0221GE51 R0812 31