Original message
| lplamondon
 |  "Problem with Honeywell CT8775"
, posted Thu 10 Jun 15:33  
Hi all....
I have just replaced my 2 old Honeywell Thermostats with 2 round digital CT8775C thermostats. I have connected all 4 wires (R, G, Y and W) with no problems but for one system (I have 2 carrier systems), the blower keeps cycling on and off even when the Thermostat is in the off position. I have tried reconnecting the old thermostat but I have the same problem (that I did not have before). The only difference I can see is there is a jumper between the R and Rc poles. How do I resolve this issue? The blower will work for 10 minutes, stop for 10 second then comes back on again,,,quite annoying really. Many thanks for the hlep and suggestions!
Louis
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Replies:
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| fadp8
| "Re(1):Problem with Honeywell CT8775" , posted Wed 23 Jun 21:24
I live in western Ohio near Dayton and Cincinnati. I have been
trying to locate a store or internet dealer that has the new
Honeywell round digital thermostat for heat/air, model CT8775C. No one seems to have this item, although honeywell website says that home depot has it but they have the heat only model. Can you help me by telling me where I might be able buy this item.
Thanks
Warren
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| | lplamondon
| "Re(2):Problem with Honeywell CT8775" , posted Wed 23 Jun 22:29
I live in Boston, Mass and bought mine from Home Depot. They had all models in store (heat only and well as cool/heat) even though the digital round CT8775C isn't shown on Home Depot's website. You should be able to ask your Home Depot store to order one for you... good luck!
Louis
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| TechMaster
| "Re(1):Problem with Honeywell CT8775" , posted Thu 10 Jun 15:53
I would check to see if there is a circuit board in the blower. There is probably a relay sticking or you might have some loose wiring in there.
Keep Cool!
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| | lplamondon
| "will check" , posted Thu 10 Jun 16:07
Thanks for the prompt reply...I will check and let you know the result!
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| | lplamondon
| "Re(1):will check" , posted Fri 11 Jun 11:03
I disconnected the green wire (G) from the wall thermostat and the blower did NOT stop... what does this mean?
Thanks!
Louis
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| | xenos
Webmaster 
| "Re(2):will check" , posted Fri 11 Jun 15:15
That it's not the thermostat causing the fan to run.
Xenos.
The best way to escape a problem is to solve it.
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