British Gas PT5 Thermostat

Beans27

Bit of a long shot, but does anyone have a British Gas PT5 thermostat? My mum has moved into a house with one and various people have tried to set the times for her - whatever anyone does though, it consistently comes on in the middle of the night and she's getting stressed about the cost of it.
I've had a look online for a manual, looks like this is an old thermostat that is now not used anymore, I've tried using instructions in manuals for what people say is the closest match - but either we aren't doing something right or it's broken.
Anyone with any advice, much appreciated.

matelodave

I think it's one of these

http://www.gasapplianceguide.co.uk/DigistatProgramming.pdf, http://www.gasapplianceguide.co.uk/Digistat%20Instructions.pdf

Have you changed the batteries?. These stats are about 10 years old so it might be worth swapping it for a newer one if you can't sort it out.

Beans27

Thanks - I've had a look at those manuals before and tried to set it using them - but we still seem to be getting it wrong...... battery is an idea, not thought about that, will go see if I can work out where to take it out......will report back :-)