HP will not cut off with fossil fuel heat on - http://www.hvacmechanic.com/ Forums
Original message
| pshef
 |  "HP will not cut off with fossil fuel heat on"
, posted Sun 19 Oct 16:04  
Hp will not cut off when aux heat (back up oil furnace) kicks on. When temp in house drops more than 1 degree back up heat takes over but Hp is supposed to cut off. Too much heat in space is fire hazard. Thermostat type HoneyWell Vision Pro. Please help.
Phillip
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Replies:
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| Lou Lopasco
| "Re(1):HP will not cut off with fossil fuel he" , posted Sun 19 Oct 17:29
Maybe the outdoor temperature sensor is set too low.
*Rookie HVAC service and installations. 3 years on the force!*
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| | pshef
| "Re(2):HP will not cut off with fossil fuel he" , posted Mon 20 Oct 17:24
Thanks for the info. I had bought an outdoor sensor but never hooked it up. Now i can find it and was hoping it was something else. Thanks. Now i know what i have to do. Phillip
Phillip
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| | Houston204
| "Re(2):HP will not cut off with fossil fuel he" , posted Sun 19 Oct 18:55
Verify that option 200 = 1 and 210 = 0 (outdoor sensor required).
"Tip of the Day" Remember to remove power first.
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