Hi, I switched my old Honeywell froststat (it had a broken mount and was firing up boiler) to the cheap Greenbrook TH90F. This is clicking and lighting up when i turn the temp gauge up, (currently 13 degrees C), but no response from boiler. Frost thermostat terminals are wired as instructions (live to t1, neutral to t4). Boiler is older Ideal Baxi.
So, why no boiler response I am wondering? (Does boiler only respond itself if temp drops further??) There are no other wires from froststat.
Any ideas? Thank you.
So, why no boiler response I am wondering? (Does boiler only respond itself if temp drops further??) There are no other wires from froststat.
Any ideas? Thank you.