To override 'HOLIDAY' function in Glow-worm Climapro-RF?

I have new 38cxi installed and decided to get -wireless programmable Room thermostat-Climapro RF.
Boiler was functioning fine before connecting the unit.
I programmed the programmer with installer.(I am familiar with commercial controllers).
however, it appears either we have programmed in 'hoilday mode' or it was already there.
I am following the instructions and what ever i try i can not get rid of holiday mode and so boiler thinks i am on holiday and it will not fire.
Any clues from anyone please ? we r freezing ???.Thanks.