How to operate heating without room sensor/thermostat/controller thingie

elljay

Afternoon all

I have an Ecodan heat pump and a Mitsubishi portable wireless remote controller. A couple of days ago I managed to drop it and the batteries came out.   Having done lots of reading and tried various things I'm pretty sure I need to re-pair it with the receiver and I'm fairly clear how to do this.  However the receiver is about 8 ft high in the airing cupboard behind the cylinder.  My daughter will come over and hold the ladder while I reset it but can't come till the weekend.

My question is, how do I get the heating to come on without doing using the remote?  The last few days have been reasonably mild but it's pretty chilly today.

I'm sure it's probably something simple so would be grateful for your help.  Thank you.