An expert who has achieved level 2 by getting 100 points
An expert that got 5 achievements.
An expert whose answer got voted for 20 times.
An expert who has answered 20 questions.
Re: fan will not turn on
You can check amp draw on the motor if it is high the motor could be going off on the over load,also check the uF with a multi meter. also when the motor stops feel the motor and see if it is really hot. if it is hot it is a sign that it is going.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Home owner's manual? Troubleshooting section. Gas or electric?
If gas, pilot light may be out, or other gas controls. Are you sure you have gas supply? Do you have other Gas appliances so you can check? Furnace needs power for controls, fan and thermostat. Are you sure you have electric power to the furnace? Does the thermostat have a fan switch? If so turn it on and see if the fan turns on. If it does not turn on you may have a circut breaker poped. or some other reason power to the furnace is not working.
Most furnace operating on Oil or gas will heat the combustion chamber before starting fan to prevent cold air draft at start-up, can last a minute or two. Eiter the main flame does not come on or the chamber thermostat have fail. Try to modify fan option on room thermostat from auto to on. Cold air coming out: burner problem or no more oil or gas, warm air: burning chamber thermostat problem, leave room thermostat fan option to on until repair.
When you replaced the igniter did you touch the metal part of the igniter? If you touched it then the igniter may be bad again. I think the pressure switch may be stuck. The pressure switch is round may be plastic or silver metal, it will have one or two rubber hoses on it. Pull the hoses off the switch and blow through it to clear hose to furnace. If you furnace is a 90% efficiency model then your drain going outside may be frozen and if it is then cut the drain so that only 6" sticks outside the structure.
Make sure you have gas to the unit and the switch on top of valve is turn to on. Can you here the gas valve click? It igniter comes on and a delay and the gas valve should come on. Kill power to furnace to reset control board. Rus Let me know how it goes.
You have a carrier or bryant AC Coil model number and the sn says 1995 and its 5 tons and if you actually have a heat pump with the gas furnace you have what we call in the business a dual fule heatpump setup. There are a number of items that could be causing your problem. I would recomend that you first look for the relay box discribed below and if you have that put the wires at your furnace (R &W) together with nothing else on them. If it lites then the problem could be anywhere, thermostat, wiring, the control box which has about 4 to 6 relays. If it dosn't lite the furnace is where your problem is or at least one of your problems is and start there. remove anyother wires on R&W before reapplying power. Also if you have the control box below it will have its own 24v control transformer but your going around that with the test I mentiond here. Oh yes and if it hasnt been modified you'll have to keep the solid door on it to apply power to the furnace.
There are a multitude of items it could be but I believe your age furnace has an auxiliary sensor - relay assembly it is a box about 18 inches long X 6 inches square. has about 10 terminals on it. And it will look like a birds nest with all the wires going and comming out. Id have to suggest you call someone and here's what Id do if I were you. If they say they aren't sure but think its in the relay assembly for the dual fuel control ask them to call carrier or Bryant and request they talk to a service trained expert there or recomend someone. You can do this instead of paying for 2 people. Just ask them if they know about Bryant or Carrier Heatpump dual fuel setup before you tell them to come out.
The newer dual fuel thermostats around $300 - $400 plus an out door sensor about $30 will get you fixed for parts. NO more relay box needed just the out door sensor and the compatable thermostat. if this is where the problem leads. The thermostat cost will depend on if you want the program feature. If someone is home all day Id suggest you probably don't need this feature.
This should get you headed in the right direction. If it helps you please grasde me accordingly, and GOOD LUCK!