Various explanations could trigger the blower to operate continually, for example you might have set the incorrect thermostat configurations, the supporter change is set to “manual override,” a shorted thermostat wire, etc. For instance, considered one of The explanations is really a weak burning flame, which suggests the pilot light http://arthurnanao.blogsidea.com/8441321/new-step-by-step-map-for-heating-installation