Hi Griggs,
The thermostat is from Honeywell. The timer/programmer is built into the unit. It think that it may be turning off because it quickly warms up to high temperatures such as 60c / 65c.
Hi Everyone,
I just had a Vaillant Ecotec plus 824 installed and could not figure out how to turn on the central heating. I followed the manual and nothing happens. I called my builder and he pushed the plus and minus button together and the system came on. However, it went off after 5...