Re: No Heat
Being forced air heating , it's recycled indoor air ( at the inside ambient temperature ) that you are feeling.
Originally Posted by GFrazier
With the thermostat set to * Auto* or *On* only controls when the blower turns on.
The blower won't blow at all with the thermostat set to auto but when I switch it to on it will turn on and just blow cold air with it set at 75.
Set to *On* you are manually turning on the blower to run constantly until you move the swith to *Off* or *Auto*.
In the *Auto* setting -- only when the heat source is fired and reaches a set temperature ( at the heating unit ) is when the blower would turn on to circulate the heated air. At the point when the indoor temperature reaches whatever you set the thermostat is when the blower shuts off -- automatically.
In other words -- turning the switch to *On* won't turn on the heat -- just the blower
Is this a hydronic forced air system --- system that uses hot water circulated through a water to air heat exchanger located in an air handler ?
The pilot light is lit on the boiler and I have hot water.
If so, then it sounds as though there's an issue with the water circulation components or the associated controls or possibly some wiring.
While it's possible a thermostat is faulty and can happen from time to time -- more often than not problems are usually elsewhere --- as you found.
What is causing the cold air? The Thermostat?
No offense , it doesn't sound as though your knowledge of heating systems lends you doing any further troubleshooting.
My advice would be to call a professional to troubleshoot and repair the heating system.
"" an ounce of perception -- a pound of obscure "