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Back draft through chimney

Live in center of ILL. strong winds shut cieling hung electronic ignition furnace down need chimney ideas

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  • henk2845 Feb 02, 2009

    I have a similar problem with downdraft through the vent pipe of my water heater. I recently installed a continous flow gas water heater (replaced the standard 40 gal gas water heater). I now have a problem with down draft through the vent pipe. I never noticed it on the 40 gal heater, but the draft is so strong that it prevented the gas from firing. The gas nozzles on the new heater are directly underneath the vent pipe. I put in a damper and it helped somewhat, but I am afraid it is not venting enough, causing some carbon monoxide to get back into the utility room, where the heater is located. Also, the utility room is getting real cold in the winter and I can feel cold air coming down the vent pipe into the heater and into the room, despite the damper I installed. Someone mentioned that I should extend the vent pipe on the roof. How high should it be extended, if any?



    Thanks so much for your ideas.

    hnek2845

  • dwkcool May 11, 2010

    is the top of chimney high enough in the air

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Added highth to the pipe chimney and a better cap on top to slow the wind

Posted on Dec 20, 2008

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Cleaning gas furnance flue


Pull the hose off to the pressure switch, and measure the pressure while in a call for heat with a manometer... check the pressure switch rating & compare. Make sure you don't have any down drafts...a high wind cap might be needed. Also make sure the chimney termination is 2 foot above any pitch that is within 10 feet.

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Fl3 code. heater working fine when i closed last year. will not start this year. showing fl 3- does not ignite , does not do anything ..help please


3.




Spillage at A.Cold chimney A.Allow heater to operate 5 minutes to create draft action.

draft hood B. Vent pipe pitches down to chimney B. Reinstall vent pipe to pitch up from heater to chimney.

C. Blocked chimney C. Remove blockage.

D. Draft hood altered D. Install factory-provided draft hood.
E. Prefabricated chimney with incorrect cap E. Install a Nationally Recognized Testing Lab (NRTL) listed vent


http://www.jandy-downloads.com/pdfs/Lite2_LJ_IO_H0248900F.pdf

I tried to copy the FL3 write up from the chart but it screwed it up a little. Look at Page 35 of the manual for a clear copy

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Have a ruud achiever 90 plus furnace. the flame goes out after the igniter quits. any ideas


Problem: Your furnace will not ignite the gas to produce heat for your home. When a furnace has a bad ignitor what I see most of the time is the following sequence of operation:


1. Thermostat calls for heat. 2. Draft inducer motor starts. 3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes. 4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas. Solution: You probably need to purchase and install a new ignitor. I would suggest that you inspect your ignitor closely for cracks. Make sure you do not touch the ignitor with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, rollout switch problem. The furnace's control board might not be supplying the voltage to the ignitor. If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but most of the time they can be cleaned an will work well after cleaning.

Nov 26, 2010 | Ruud UBHC Air Conditioner

1 Answer

Carrier 58sxc120 won't ignite and I get a fault code blinking light of short long short don't know what it means.


Problem: Your furnace will not ignite the gas to produce heat for your home. When a furnace has a bad ignitor what I see most of the time is the following sequence of operation:


1. Thermostat calls for heat. 2. Draft inducer motor starts. 3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes. 4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas. Solution: You probably need to purchase and install a new ignitor. I would suggest that you inspect your ignitor closely for cracks. Make sure you do not touch the ignitor with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, rollout switch problem. Please see "limits, rollout switches & furnace control boards" further down on this page. The furnace's control board might not be supplying the voltage to the ignitor. If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but most of the time they can be cleaned an will work well after cleaning.

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1 Answer

My goodman furnace keeps lighting for about 10 seconds than goes out lots of clicking sounds


Problem: Your furnace will not ignite the gas to produce heat for your home. When a furnace has a bad igniter what I see most of the time is the following sequence of operation:


1. Thermostat calls for heat.
2. Draft inducer motor starts.
3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes.
4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas.
Solution: You probably need to purchase and install a new igniter. I would suggest that you inspect your igniter closely for cracks. Make sure you do not touch the igniter with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, roll-out switch problem. The furnace's control board might not be supplying the voltage to the ignitor. If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but most of the time they can be cleaned an will work well after cleaning.

NATE, NCCER, PHCC,HVAC Certified Instructor

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1 Answer

Furnace wont ignite


check all safety switches located at burners and draft hood its a little round disc with a button that can be pressed to reset it.if there is an inducer motor check to see if the pressure switch is being pulled in it might be weak or you might have a clogged chimney.

Mar 22, 2010 | Heating & Cooling

1 Answer

How does a draft inducer blower work


A draft inducer blower is used to create a proper draft in a chimney or exaust pipe from your water heater or furnace. In a high efficiency furnace or water heater, there is not enough heat expelled from the unit to the chimney to create a proper draft. The toxic carbon monoxide gas which is expelled through the chimney from your appliance is normally carried upward due to the rising hot air in the chimney. When appliances got more efficient (putting more heat into the water tank and less going out the chimney), manufacturers had to add this blower to help get the gases out the chimney since there wasn't enough hot air to create a draft.
Hope this helps.

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Exhuast smell(odor)


J,

If your Laser 56 is giving off fumes it is probably coming from the igniter gasket and the igniter guide gasket. The igniter gasket has broken and needs to be replaced with the new style. The new style cost about $12. The guide gasket is the fiber gasket around the hole the igniter goes in. It has seperated and all you have to do is smash it back together. If you have high temp silicone or furnace cement, you can use either to seal the crack. Any toyotomi dealer can get you the new igniter gasket # 17185580.

Good luck,

Tom Hawkins
hawkins111@gci.net

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1 Answer

Furnace shuts down, will not start up again


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If the burner does fire but then shuts down it sounds like the flame sensing rod is not working. It is dirty or needs replacement. Are there any error codes when the burner shuts down, or an indicator lamp that shows when the controller detects a flame?

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