Question about Honeywell Focus 6300B 5-2 Days Programmable Thermostat Heater

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RTH6300B - Not blowing the hot air

Hello All,
I bought a Honeywell RTH6300B thermostat from the local Home Depot.

Installed it, everything looks ok....except hot air does not come. Room temperature shows 69F. I set the temperature (Manual Override...since I haven't tried programming it yet) to 77F just to test the heating. I see the "Heat on" symbol come up (stays constant...not flashing). However, if I check the vent, I cant feel the hot air blowing. The fan is in "auto". I tried speaking with their customer support. Customer support gave me some baloney about the furnace meeting its maximum capacity. I removed the thermostat and put back the old manual thermostat. Everything works as normal.

Any help in figuring this out will be appreciated.

Thanks,
Sci

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  • rcmcjohn Jan 02, 2009

    I have the exact same problem. I just called the Honeywell tech line and they said that it is my forced air furnace and not my new thermostat. Funny though, when I put my 30 year thermostat back on the furnace works just fine.

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I currently have a 2 wire system. I have one red and one white. I hooked the red to the R and the white to the W. I had to go into the system setup using the UP arrow button and the FAN button. The first setting is the 1 setting, and I selected number 2 ( Heating Only ). Then the 5 setting. I selected number 1 ( Gas/oil steam or gravity system ). Then 14 is usually 0 for Fahrenheit. I was just messing around and that is the buttons I used and I tested it. The furnace kicked on and then 10 to 15 secs later the air began to blow through the vents. I hope this works for others who read this.

Posted on Feb 15, 2009

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