Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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Household Thermostat Replacement

I purchased a Honeywell RTH2310 thermostat for my house. I removed my old thermostat without noting/labeling the wiring configuration, and have thrown out the old thermostat. I connected the wires (red, green, yellow, and white) to the new thermostat, but it will not work. I can get AC, but no heat. My AC/Heat is a Trane system. I contacted Honeywell...and they were useless.

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You have to configure the thermostat to run the fan when there is a call for heat. look at the installation instructions and they shoud ask you if it is gas or electric heat if its electric then you are gong to have to configure it to makr e the fan come on with the heat. Good luck

Posted on Jan 25, 2009

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Posted on Jan 02, 2017

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2 Answers

I have a 9610 thermostat turns on and off to frequently


I am guessing but the thermostat is either faulty or is in conflict with another thermostatic device in the system. The room thermostat measures the air temperature in the room but with a modern intelligent boiler there will be other sensors measuring all sorts of things including the water temperature.

Personally I prefer to have thermostatic radiator valves rather than a room or zone thermostat.

Jan 02, 2017 | Heating & Cooling

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I need to know if a mercury thermostat is bad will it allow the ac to come on but not the heater


need to know what thermostat you are referring to
the coolant thermostat has no connection to the ac system
if it is the ac thermostat the it maintains the cabin temperature by activating the ac compressor as required
if you are referring to climate control then that controls the heater flow to keep the ac temperature at a set temperature with the ac compressor operating all the time
so as an answer to you question , check the climate control module

Dec 30, 2016 | Heating & Cooling

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My thermostat is set on 68 degrees and it shows room temperature is 68, but the furnace still kickson, Honeywell said it has a 1 degree difference. so what's the problem then?


Yes there is a one degree tolerance, in fact my heater just kicked on and it is set to 67 and the inside temperature reads 67. It is also a Honeywell.

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1 Answer

Kenwood Electric Oil Heater. Model EW7507EK. Can anyone tell me what color order of wires onto the circuit board? I feel like an silly for not taking a photo before starting the repair. F3-5


Look carefully on the board itself. Sometimes the wire color codes are labeled right next to the connector. If not, there may be some other letter codes and these should match the ones on the thermostat.

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1 Answer

Johnson Starley boiler main board fuse blowing


Chances are the fuse on the circuit board is for control circuit protection. Take note of the location of all the thermostat connections on the circuit board and remove them. Do this with the power OFF. Replace the fuse and re establish power. If the fuse did not blow, the problem is in the wiring to or from the thermostat. It could even have the insulation rubbed through and making contact with the side of the boiler or a mouse could have chewed through the insulation causing a short to a metal object.

Once the issue with the thermostat wiring is resolved, reinstall the low voltage connections and you should be good to go.

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1 Answer

Electric Furnace stopped running


You have one of two problems. Either the capacitor for the motor has failed or the motor has failed. I would turn off the power to the unit and see if you can locate the capacitor and remove it. An ac supply or electrical supply house can match up the capacitor. This is relatively inexpensive. Otherwise you will need a new motor.

Nov 11, 2014 | Heating & Cooling

1 Answer

My termost set to a/c, the fan auto, blow very well, but when I switch to heat and the fan auto, doesn't work, but if I put fan on work why?


the thermostat says to call for heat buildup in the work if its not cold enough the thermostat won't call for heat and I won't go on but when it gets cold and the thermostat set to the temperature you want or hire someone that doesn't cycle

Oct 12, 2014 | Heating & Cooling

1 Answer

Why can't I lower my honeywell 8500 below 67 on cool?


With a two story house you have to be aware that cold air flows downwards so any cold air coming from an ac unit will flow downstairs( normally down the stairway) so unless you can close off the down stairs then the up stairs unit will be cooling downstairs as well. Ac units have a thermostat located in the air intake and it cools until the cold air has risen to that point. In effect the space above the ac unit will be hotter than the floor. Knowing how they work ,you can see that the upstairs unit will never reach the set temperature because the cold air is continually heating from the house and will never get to the top thermostat.
So your solutions are
1-- fit controls that restrict the cold air from leaving the upper floor (Doors)
2--don't run the upper ac unit unless you are living up there (waste of money
)3 place an ac in each upper room and keep the room door closed

Aug 12, 2014 | Heating & Cooling

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