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11-15-2011, 07:03 AM #1
Had a friend that wanted me to look at why his furnace would not come on the other day ( like I am a HVAC guy now that I am a Home Inspector). The thermostat had no on/auto on it. I was confused by this. It was a small two burner gas furnace. Just curious! Thanks.
11-15-2011, 07:26 AM #2
What kind of Stat? A round Honeywell T87 without a cooling sub base doesn't have any switches on it. Lots of the older non-programmable heat mode only stats don't have any switches.
Did you check for 24V across the stat or at the furnace? Is this a newer older unit. Check for blinking lights on a newer unit. Could be no power, no 24V, bad trans, who knows, lots of possibilities.
"The Code is not a ceiling to reach but a floor to work up from"
11-15-2011, 07:45 AM #3
Great thanks. It is round old honeywell. It also has no A/C on it. I was just confused why there would be no option on the blower. Thanks a lot.
11-18-2011, 06:54 AM #4
Some fan and limit control switches have a manual fan on / off switch that can be controlled at the furnace.
Amazon.com: Honeywell L4064B2228 combination fan and limit furnace control: Home Improvement