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

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No ac or heat

Me centeral air or heat will not come on i changed the thermastat and still nothing the breakers are also good

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If the system is not to old it could have a fuse on the control board or it could be a bad transformer

Posted on Dec 01, 2008

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Furnace keeps tripping the breaker changed breaker and wires all good up to the furnace still keeps tripping when i try to turn power on. nothing happened to the furnace and the wires were tested up to the...


Disconnect the black power wire where it is connected to the furnace with breaker off. Put a wire nut on it and then turn the breaker on. If it continues to trip, the problem is not the furnace and you will have to trace the power wire back to the breaker box to find problem. Next, disconnect the black wire from the breaker (with breaker off) and then snap breaker on. If it trips, bad breaker. If the furnace was disconnected and breaker did not trip, you have a short either on the P C Board or the transformer.

Mar 31, 2011 | Heaters

1 Answer

New thermostat..have heat but not A/C help....


What are you setting the thermostat to when you turn on the AC , if you turn on the AC and the house is warm you will need to turn the AC down to a lower setting before the the AC will start up.

Mar 14, 2010 | Honeywell Electronic Programmable...

1 Answer

Was working now i have no power. and its not the breakers


Hi, it does happen. Have you had a power outage? Any surge in voltage could cause problems. First, make sure you don't have a fuse on the control board, usually an automotive type 3 amp (purple). If you have a volt meter, check for 24-27 volts AC between the C and R terminals. If you have voltage there, your tranformer is ok, the board would be all thats left. Good luck.

Jan 12, 2010 | Goodman Heaters

1 Answer

Went to bed last night with heat woke up today everything house was cold, looked at thermastat it said 63degrees,, checked out furnace it starts up but doesnt ignite, sounds like its in the start up stage...


Does the hot surface igniter glow? If not, it is probably cracked. If this is
a 90% furnace, it could be that yuor intake air is causing the problem.

Dec 27, 2009 | Goodman GMS90703BXA Heater

1 Answer

I have a Rheem Gas/Electric AC unit that provides both Air and Heat. Yesterday the heat stopped working... it blows out cold air. We've had some cold temperatures lately (low 20's) but this isn't unusual...


Heat pumps provide good heat until the tempurature drops below 35-40 degrees. After that there isn't much heat to extract from the outside air and then either the gas furnace kicks in or the electric heat strip does the job of heating the air. if you have heat strips, I would check your breakers in your panel and sometimes there are a couple of breakers right on the air handler or furnace. The ones that will be for your heat strip are 220v and will be twice as wide as your normal 110v breakers . Please don't trust a visual inspection as they can look like they are in the "on" position but are indeed tripped. Turn them all they way off and then back on. If the beakers check out you may have an open cicuit in the heat strips themselves and you will need to have a qualified HVAC tech look at your furnace to repair it.

If your furnace is a "duel fuel" and uses natural or LP gas for back up heat then your ten year old rheem probably needs a good maintenance by a qualified service tech. There is a flame sensor to clean, ignitor to check (replaces the old school pilots), burners to clean flue connections to check and much more. ALL manufacturers of any heating apliance recommend yearly maintenance. Most companies offer something for around 100 bucks. I hope this helps.

Rocco

Dec 12, 2009 | Heaters

2 Answers

15 amp fuse blows when AC breakers are closed at power source


hire an electrician. period you may need to have a larger wire and larger breaker installed..
do not attempt to do it yourself unless you are a licensed journeyman electrician.. the problem is prolly fairly serious.
make sure if wire and breaker are replaced that the person who does it pulls a permit period..

Apr 30, 2009 | Coleman Propane Forced Air Heater...

1 Answer

I need a picture diagram of how to wire up two different baseboard heaters with seperate thermoststs on the same wire in the breaker box.Never done this before and I don't want to burn down my home.


it can not be done. if you want 2 seperate thermastats servicing 2 seperate baseboards, then what you will have is 2 seperate circuits, one for each thermastat and baseboard. If you are talking about only at the breaker box, then that can be done.... assuming that the total amperage does not exceed the wire rating or the breaker..... if that is the case you will have to install a junction box and split the wiring BEFORE it goes to each seperate heating unit.

Mar 02, 2009 | Fahrenheat Electric Convector Baseboard...

4 Answers

Cold air will not turn on


What you can do is you can go to any store for special like bottles that you put inside the AC unit to get cold air.


Thank You!!!!!!!!!!

Jun 23, 2008 | Honeywell CT87B ROUND HEATING&COOLING...

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