Honeywell SDC Service Manual page 68

Operation
5.2.2.4.4
Resetting
68
HC Direct heating circuit
MC-1 Mixed heating circuit 1
MC-2 Mixed heating circuit 2
DHW Hot-water heating circuit
1) Program selection for source and target circuits are
skipped if programs P2 and P3 are disabled in the
"System Parameter" menu.
Reloading default programs
See flowchart on pg. 70
Individually created switching time program P1, P2 or P3 can be
overwritten with the original default switching time program P1, P2
or P3.
For this purpose, select the DEFAULT-TIME function within the
heating circuit selection after accessing the "Timeprograms"
menu.
After confirming by pressing the input button
dedicated to reloading appears flashing (HC, MC-1, MC-2, ALL).
If the automatic programs P1, P2 and P3 (see "System
Parameter" menu, program parameter = P1 to P3) were enabled,
the desired switching time program P1, P2 or P3 of the heating
circuit affected by the reload can be selected. If not enabled,
program selection is skipped.
Resetting then occurs by pressing and holding the input button
approx. 5 s until acknowledgement appears in the display.
Resetting is confirmed by acknowledging COPY OK.
The DEFAULT-TIME function is then called up again to replace
other circuits with their default programs if necessary.
SDC / DHC

, the circuit
EN2H-0221GE51 R0812