digistat thermastat wiring

[cowan7824]

hi ,can any one help, i currently have a honeywell thermostat installed,but want to replace it with a drayton digistat.the wires that connect the honeywell thermostat are as follows=

earth to earth
a blue wire to a terminal marked 2
a yellow wire to a terminal marked 3
a red wire to a terminal marked 1

can any one help me to put the above wires and colours in the correct terminals on the drayton digistat.
the terminals are as follows

off on com N




thanks for any help out there

colin

 

[D_Hailsham]

off - not used

on - yellow

com - red

N - blue

The earth wire is not used and should be made safe - use a terminal block.

 

[cowan7824]

off - not used

on - yellow

com - red

N - blue

The earth wire is not used and should be made safe - use a terminal block.

hi d-hailsham, thanks for your last help on this wiring thing. i know its been a while since you helped out on this one but to be honest i have not had time to ask advice again.
it seems that when the timer is set to turn off the heating and hot water,by its clock,it blows the 3amp fuse which i think protects the programer ( honeywell st699 ) .this seems to occur every time it reaches that time on the programmer for it to go off. any ideas????