• Looking for a smarter way to manage your heating this winter? We’ve been testing the new Aqara Radiator Thermostat W600 to see how quiet, accurate and easy it is to use around the home. Click here read our review.

honeywell st6400c

  1. J

    Honeywell ST6400C

    Hi all, the other day I noticed that our Honeywell ST6400C was showing a red light for “heating” but the heating slider switch has been set to “off” for the last couple of months. I cycled the heating slider switch across to “continuous” and back left to “off” and the red light went out. Any...
Back
Top