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Gas furnace shuts down

The unit start running normal igniter glows red gas valve opens for 3 se conds then lockout,I allready change board,ignition module and termostate

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  • bob_diaz40 Jan 23, 2009

    I allready check rollouts(bypass) Cleaned flame sensor Do You think about pressure switch or Limit

  • bob_diaz40 Jan 23, 2009

    I don't see a termo coupling in this unit
    it's a igniter and a flame sensor

  • bob_diaz40 Jan 23, 2009

    I did it allready

  • bob_diaz40 Jan 23, 2009

    it's a Nordine G3RA-o72C13

  • bob_diaz40 Jan 23, 2009

    This is HOT surface igniter

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The flame sensor is a thermocouple, you need to test it with a multimeter, on normal temp it should return approx 1Kohms.
Also test the pressure switch, if it is defective you can have same problem.

Posted on Jan 24, 2009

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Why dont you go to a repair man

Posted on Jan 23, 2009

  • charles lill Jan 25, 2009

    dont think any amatur at this place could be qualified to mess with gas get a qualified engineer out and ge the wor certified otherwise your home insurance will suffer honestly

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It might be because of the load that u give to it check if ur using correct limit

Posted on Jan 23, 2009

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I would suspect your not getting a pilot. If not, you need to check the pilot gas line and orifice. You must get pilot prove before you get main burner.

Posted on Jan 23, 2009

  • Mark Egan Jan 23, 2009

    Hot surface I believe still uses a pilot. There is no way AGA is going to let a bunch of gas dump onto the furnace without some sort of flame first.

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What is the make and model number of your furnace? Let me know and I'll work through with you.

Posted on Jan 23, 2009

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Take off pressure switch and turn upside down and shake them (TO see if condonsation has gotten into them!
if so shake let dry replace and try again!

Posted on Jan 23, 2009

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Have you checked the thermo coupling.

The thermo coupling is the little copper piece that the pilot light flame stays on. If the thermo coupling is not getting the flame of the pilot light the unit will not stay lit. Replace that and that should solve your problem. They are cheap and easy to replace.

Posted on Jan 23, 2009

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A bad rollout sensor will cause that. they are located in front of the burners mounted to the housing of the burners ..if just one goes bad it will fire like yours

Posted on Jan 23, 2009

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1 Answer

Why is gas furnace in igntion lockout due to recycles (8 blinks). likely causes?


Check the thermocouple (heat sensor) on the pilot light...it tells the control unit that there is a lit flame...otherwise, the control unit won't let the gas valve open...does the pilot light stay lit after you've held the button down 30 seconds?...

Jan 01, 2015 | Dryers

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Furnace comes on igniter comes on but gas dont


First shut off power to unit then check all wiring in control compartment. Look for any unhooked wires especially at gas valve and at control board. If no problem there then run unit and see if your gas valve is getting 24v at the terminal marked MV on the valve. Do this by putting one meter lead (red) on MV and one lead (black) on a good ground such as the metal of the cabinet itself. About 5 or ten seconds after the igniter begins to glow the board should send 24v to the valve. If it doesnt then the board thinks the igniter is not working or the board is bad. If there is 24v then the gas valve is bad but you can try giving the valve a few good raps with the handle of a screwdriver. This will sometimes free up the solinoid inside the valve but is only a temporary fix you will need a new valve. All this is assuming you have a hot surface igniter.

Sep 20, 2014 | Heating & Cooling

1 Answer

My York furnace sometimes doesn't completely ignite


A noisy inducer probably is headed for replacement.

The igniter can produce a healthy glow and still be defective. Mine had to be replaced with a new, improved one.

The thermocouple could be defective even though it seems to open the gas valve when it should.

The heat sensor in the bonnet could be defective. That controls main blower operation.

The heat exchanger could be cracked.

Jan 10, 2014 | Heating & Cooling

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What are the carrier 8000ts led error codes?


They are listed inside the front panel of the main unit.

LED CODE

EACH OF THE FOLLOWING STATUS CODES IS A TWO DIGIT NUMBER WITH THE FIRST

DIGIT DETERMINED BY THE NUMBER OF SHORT FLASHES AND THE SECOND DIGIT BY

THE NUMBER OF LONG FLASHES.

STATUS

11 NO PREVIOUS CODE - Stored status code is erased automatically after 72

hours. On RED LED boards stored status codes can also be erased when power

(115 VAC or 24 VAC) to control is interrupted.

12 BLOWER ON AFTER POWER UP (115 VAC or 24 VAC) -Blower runs for 90

seconds, if unit is powered up during a call for heat (R-W closed) or R-W opens

during blower on-delay.

13 LIMIT CIRCUIT LOCKOUT - Lockout occurs if the limit or flame rollout switch is

open longer than 3 minutes.

- Control will auto reset after three hours. - Refer to #33.

14 IGNITION LOCKOUT - Control will auto-reset after three hours. Refer to #34.

21 GAS HEATING LOCKOUT - Control will NOT auto reset.

Check for: - Mis-wired gas valve -Defective control (valve relay)

22 ABNORMAL FLAME-PROVING SIGNAL - Flame is proved while gas valve is

de-energized. Inducer will run until fault is cleared. Check for:

- Leaky gas valve - Stuck-open gas valve

23 PRESSURE SWITCH DID NOT OPEN Check for:

- Obstructed pressure tubing. - Pressure switch stuck closed.

24 SECONDARY VOLTAGE FUSE IS OPEN Check for:

- Short circuit in secondary voltage (24VAC) wiring.

31 PRESSURE SWITCH DID NOT CLOSE OR REOPENED - If open longer than

five minutes, inducer shuts off for 15 minutes before retry. Check for:

- Excessive wind - Proper vent sizing - Defective inducer motor

- Low inducer voltage (115VAC) - Defective pressure switch

- Inadequate combustion air supply - Restricted vent

- Disconnected or obstructed pressure tubing

- Low inlet gas pressure (if LGPS used)

If it opens during blower on-delay period, blower will come on for the selected

blower off-delay.

33 LIMIT CIRCUIT FAULT - Indicates a limit, or flame rollout is open. Blower will

run for 4 minutes or until open switch remakes whichever is longer. If open

longer than 3 minutes, code changes to lockout #13. If open less than 3 minutes

status code #33 continues to flash until blower shuts off. Flame rollout switch

requires manual reset. Check for: - Restricted vent

- Proper vent sizing - Loose blower wheel - Excessive wind

- Dirty filter or restricted duct system.

- Defective blower motor or capacitor. - Defective switch or connections.

- Inadequate combustion air supply (Flame Roll-out Switch open).

34 IGNITION PROVING FAILURE - Control will try three more times before lockout

#14 occurs. If flame signal lost during blower on-delay period, blower will come

on for the selected blower off-delay. Check for: - Control ground continuity

- Flame sensor must not be grounded

- Oxide buildup on flame sensor (clean with fine steel wool).

- Proper flame sense microamps (.5 microamps D.C. min., 4.0 - 6.0 nominal).

- Gas valve defective or gas valve turned off - Manual valve shut-off

- Defective Hot Surface Ignitor

- Low inlet gas pressure

- Inadequate flame carryover or rough ignition

- Green/Yellow wire MUST be connected to furnace sheet metal

45 CONTROL CIRCUITRY LOCKOUT Auto-reset after one hour lockout due to;

- Gas valve relay stuck open - Flame sense circuit failure

- Software check error

Reset power to clear lockout. Replace control if status code repeats.

If status code recall is needed, briefly remove then reconnect one main limit wire to display

stored status code. On RED LED boards do not remove power or blower door before initiating

status code recall. After one status code recall is completed component test will occur.


Thanks for Choosing FixYa.


Kelly

Oct 05, 2010 | Heating & Cooling

2 Answers

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Be sure that that PVC vent pipe going outside is not plugged or trapped with water. If the vent pressure switch is not tripping the furnace will not ignite. Also be sure that you don't have a gas leak somewhere causing weak gas flow to furnace.

Dec 21, 2009 | Goodman GMS90703BXA Heater

1 Answer

Main Fan won't turn off even with thermostat removed. Burner not


There is a chart with the wiring diagram and othere charts that will tell you what the 6 blinks are for. That should tell you what is wrong and what part you need. Sounds to me like the board has an issue or the gas valve is locked out.

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Goodman furnace


Check the roll out switch(s) and the lock out switches. They are a small disc looking about the size of a nickle, with with 2 wires attached on them. There will be a re-set button in the middle that resembles a small peg. Push this in to re-set. As the glow coil shorted out, the fuse on the control board may have blown. On the newer furnaces find the main board and look for a car type fuse. If blown, replace. You also have the symptoms of a bad limit switch, by the clicking noise (the heat fan relay) and the blower fan running instantlly.

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