Danfoss FP735 Si User guide
FP735 Si
Easy User Instructions
The FP735 Si is a three channel programmer, depending on your home, the various channels, C1, C2 or C3 will be assigned to one or
two heating zones (upstairs and downstairs) and the remaining channel for hot water. Your installer should be able to conrm which
channel has been assigned to hot water and which remaining channels are assigned to which heating zone.
The heating will not work if the room thermostat has switched the heating o. And, if you have a hot-water cylinder, the water heating
will not work if the cylinder thermostat detects that the hot water has reached the correct temperature.
Programming the Heating - 24 hour mode
1. Press the CH button to display the zone you wish to programme (C1, C2
or C3)
2. Press PROG until E1 ashes (Event 1)
3. Use the + or - buttons to set the time you want your heating to rst come
on in the morning (Event 1)
Continue programming the central heating ON and OFF times by
pressing:
a) NEXT button to move to the next setting;
b) + or - buttons to amend the time
4. Press and release the PROG button to return the unit to RUN mode
(the time appears and the colon in the display begins to ash)
Programming the Heating - 5+2 day mode
1. Press CH button to display the zone you wish to programme (C1, C2 or
C3)
2. Press PROG until E1 ashes (Event 1), then press the DAY button until
the days of the week are shown in the display.
3. Use the + or - buttons to set the time you want your heating to rst come
on in the morning (Event 1)
Continue programming the central heating ON and OFF times by pressing:
a) NEXT button to move to the next setting,
b) + or - buttons to amend the time.
4. When all events are correct, press DAY to programme events for the
weekend. or press the COPY button to repeat the weekday programme.
5. Press and release the PROG button to return the unit to RUN mode (time
appears and the colon in the display begins to ash.
1
2
3
or
4
1
2
3
or
4
5
Programming the Heating - 7 day mode
1. Press CH button to display the zone you wish to programme (C1, C2 or
C3)
2. Press PROG until E1 ashes (Event 1)
3. Use the + or - buttons to set the time you want your heating to rst come
on in the morning (Event 1)
Continue programming the central heating ON and OFF times by pressing:
a) NEXT button to move to the next setting, b) + or - buttons to amend
the time.
4. When all events are correct, press DAY to programme events for the next
day. (If a day’s event times are to be repeated in another day of the week,
then the COPY function can be used - see below).
5. R epeat steps 3 and 4 above or press the COPY button to copy the previous
days events).
6. Press and release the PROG button to return the unit to RUN mode (time
appears and the colon in the display begins to ash.H
1
2
3
or
4
65
User Overrides
Sometimes you may need to change the way you use your heating
temporarily, e.g. due to unusually cold or warm weather. The FP735Si has
several user overrides, which can be selected without aecting the set
programmes. When user overides are active, the hand symbol will ash to
indicate a manual change is active.
Move to the next event
Press the V button to move forward to the next event for the selected channel.
Pressing the V button again to return to programmed operation.
Extend the current heating period by 1, 2 or 3 hours
Whilst the heating is on press the V button once to extend the heating time for
the selected channel by 1 extra hour, twice for an extra 2 hours, and 3 times for
an extra 3 hours, pressing the V button a fourth time will remove the override.
Service Interval Timerr
If the property is owned by a landlord, they may, for gas safety reasons, have
instructed the installer to set the service interval timer.
If set, a visual and audible warning will alert you that the boiler will need
servicing within the next 28 days. This warning is repeated each day at noon.
If the boiler is not serviced within 28 days, the daily audible warning will sound
continuously and can only be cancelled by pressing any button on the unit.
In addition, all overrides and programming buttons will be disabled and the
heating and hot water may only operate for a limited amount of time in each
hour or not come on at all depending on the installer settings.
As this is a gas safety feature only an installer can reset the service interval
timer, this will be done as part of the boiler service.
Display
Channel Status
(Event number when programming)
Channel Number
TIME
Days of Week (Numbers or Text)
Danfoss Ltd
Ampthill Road
Bedford, MK42 9ER
Tel: 01234 364621
Fax: 01234 219705
Email: ukheating@danfoss.com
Website: www.heating.danfoss.co.uk
KEY TO SYMBOLS
Flame: shows when heating is on
Hourglass: shows during programming delays
Padlock: indicates keyboard is locked
Suitcase: indicates Holiday Mode is set
Clock: Timed Modes
Hand: Manual Modes
Alarm: Indicates alarm is active.
Also used for service due
3 on and 3 o events per day
2 on and 2 o events per day
1 on and 1 o event per day. All Day Mode
Timer (OFF) Mode
+ HRS: Extends function by 1, 2 or 3 hours
Timer (ON) Mode
V1_12/14
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