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FLAME GOES OUT AFTER SHORT PERIOD OF RUNNING

THE UNIT STARTS WITH THE FLAME LIT, AS IT RUNS FOR A SHORT TIME THE FLAME GOES OUT AND COOL AIR BEGINS TO BLOW. ONE YOU CLICK IT TO THE OFF POSITION IT CYCLES 2-3 TIMES ON AND OFF BEFORE IT ACTUALLY STAYS OFF. ANY SUGGESTIONS?

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  • ALTO Dec 31, 2007


    • I REPLACED NEW (AIR FILTER, AIR HOSE, GAS FILTER) UNIT STILL DOES NOT STAY ON ... WHAT ABOUT THE PHOTOCELL SINCE THE LIGHT ILLUMINATES ON THE PANEL? IS THERE A WAY TO-TEST THE PHOTOCELL?

  • Anonymous Oct 10, 2008

    Heater lights and burns for a few minutes then flame goe out, fan continues to run.' Heater will reignite while I am holding down the blue gas valve but it goes out when blue gas valve is released.

  • Anonymous Mar 28, 2014

    I have a brand new Lenox LF24-75A installed in my shop and it starts up and runs a minute or two and the flames go out , and a minute or two the flame comes back on and continues to do this cycle, with no LEDs indicating a fault.

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  • 9 Answers

TRY REPLACING THE FLAME SENSOR.

Posted on Dec 15, 2007

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Posted on Jan 02, 2017

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York gas furnace pilot lights and begins heat cycle but burner quickly goes out and system continues to run blowing cold air


There is a flame sensor that holds the gas valve open when there is a flame present. Heat generates about 10 to 15 milivolts to do this. Make sure the side of the flame is touching the sensor. If it looks ok Tighten the fitting that holds the sensor to the gas valve. If it still won't stay lit after all that then replace the sensor. They do fail with time.

Mar 29, 2015 | Heating & Cooling

Tip

Scania Fault Codes


000 00 No Fault
01 001 less than the rated voltage - heater works
02 002 higher than the rated voltage - heater works
004 03 Short circuit fan (D2I)
005 05 Short-circuiting the wires from alarm (D2I)
009 09 Heater off system TRS (D2I / D9W)
010 0A higher than the nominal voltage (heater stopped)
011 0B voltage less than the nominal (heater stopped)
012 0C overheat - fuel pump is turned off
013 0D temperature sensor recorded a high temperature
014 0E big difference values of t. Dutch. overheating and Dutch. regulation. t (D3W / D9W)
015 0F heater overheated many times - the heater is turned off (D2I / D9W)
017 11 Reusable overheating (t exceeds the second threshold) (D3W)
020 14 Candle / rod defective bulbs
021 15 Short candles / kernel bulbs
022 16 switch faulty lights / lamps kernel (D2W)
023 17 Internal defect relay control R2 candle / bar bulbs
024 18 Short-circuit switch controller candle / bar bulbs
025 19 Short-circuit diagnostic socket
029 1D fan air gap 5 does not operate R3
030 1E air fan does not work in all positions (R3-D3W)
031 1F air fan does not work in all positions (R3-D3W)
032 20 Air fan does not work in all positions (R3-D3W)
033 21 Air fan does not work in all positions (R4-D2I / D9W)
034 22 No contact with solenoid valve system COOL. (D2W / D9W)
035 23 No contact with the relay average performance
036 24 Short-circuit relay average performance
037 25 Do not rotate water pump (D2W / D9W)
038 26 No contact with the fan relay cab heating (D2W / D9W)
039 27 Short cab heating fan relay (D2W / D9W)
040 28 Short electromagnetic. COOLING valve system. (D2W / D9W)
042 2A Short circuit water pump (D9W)
043 2B Short cable from the computer to the heater fuel pump (D9W)
047 2F Short circuit of the fuel pump
048 30 No contact with the fuel pump
050 32 Heater run many times but have not worked (relay R3)
051 33 Flames emerged immediately after pressing the start button heater
052 34 No start (restart purge)
053 35 Stop flame during startup
36 054 Stop flame position max. productivity
055 37 Stop the flame in a position average performance
056 38 Stop the flame in the position of poor performance
057 39 Flame sensor short circuit (photoresist)
058 3A heater is turned off, but the flame in the combustion chamber (D2W)
059 3B Water temperature rising too quickly (D9W)
060 3C No contact with the sensor temperature control
061 3D sensor short circuit temperature control
062 3E No contact with the potentiometer (D2H / D2I)
3F 063 Short potentiometer (D2H / D2I)
064 40 No contact with flame sensor
065 41 Flame sensor short circuit
071 47 No contact with the sensor overheating (D3W / D9W)
072 48 Short-circuit overheating sensor (D3W / D9W)
073 49 Overheating sensor recorded the fastest increase in temperature (D9W)
090 5A Spontaneous error
091 5B high surge (high-voltage wires, CB-radio, etc.)
092 5C Faulty heater control unit - fault ROM
093 5D Faulty heater control unit - faulty RAM
094 5E Faulty heater control unit - fault EEPROM
096 60 Temperature sensor faulty heater ECU (D2I)
097 61 Faulty heater ECU (D2I / D2W / D9W)
255 FF cleared but faulty memory EEPROM

source
http://truckmanual.weebly.com/scania-fault-codes.html

on Dec 20, 2016 | Cars & Trucks

1 Answer

Dryer wont stay lit


if the flame is liting most likely problem is bad air movement.go outside with thedryer running and check the hood to see how strong the air is blowing out,if there's a cage or anything blocking the hood remove it,if the vent line is a long run remove the vent line from the back of the dryer,stick a leaf blower into it and blow out the lint to the outside.also with the dryer unplugged,remove the bottom panel,remove the lint filter and metal duct the filter slides into,clean that out and blow out the blower wheel with a shop vac,you can blow out the gas tube where the flame ignites to make sure it's clean blow off the motor and the cabinet and vac up all lint that blows forwards.you can try running the dryer with the vent line removed to see if it runs any better.when the dryer first heats up the flame will come on until the temp. is reached and it will shut down,one more thing to check,when gas coils start to fail you'll have heat for like the first 15 to 30 minutes,then when the coils heat up the ignitor will glow but no flame,after the coils cool down they will work again.how are you running it on timed dry or more or less dry,if you run it on auto or more or less dry there's a sensor inside where the lint filter is,try cleaning it up or try running it on timed dry to see if it runs any different,when on auto the heat comes on,when it reaches temp. the heat stops and the timer will advance,when it calls for heat the timer stops and the heat comes back on,it will do this until the clothes are dry.your model has an even heat board in it that can also cause problems but if the flame is liting it sounds like you have a block somewhere.go here this will tell you a little more about your model dryer.
http://fixitnow.com/wp/2009/03/17/easy-fixes-for-two-common-problems-with-the-whirlpool-even-heat-dryers/

May 23, 2013 | Dryers

1 Answer

Rheem 22V50F1 pilot won't stay lit. Changed thermo couple & it lit, ran then went out. Let it sit overnight & it lit, ran then went out. What next? p.s. The unit is 5 years old. Thanks


If pilot lights and flame is robust and clear blue, and pilot goes out later, then some suspects can be excluded: air in gas line, low gas pressure, thermocouple is overtightened (finger-tight + 1/4 turn), thermocouple not positioned correctly in the flame, dirty pilot tube.
If flame is yellowish and small: then clean pilot tube and combustion parts.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean
Remaining suspects can include: air in gas line, low gas pressure, bad gas control valve, tight house so household vent fans pull air down water heater vent that blows out pilot, hot attic with inadequate ventilation, water dripping down vent.

Open following links to read troubleshoot resources.
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Aug 16, 2011 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

I have a few issues with an old probably dinosaur Coleman Presidential III 7995a-856 Heating unit. I've had 3 different repairmen look at it and they're clueless. The main pilot will light and stay lit...


if the pilot is clean and and strong then this should play on to the thermocouple , i take it you have changed the thermocouple , and the connection is good at the gas valve , then if this going out could be 1, powerunit on gas valve not holding at thermocouple connection

2. Hole in heatexchanger blowing out pilot when blower comes on

I take it the pilot stays on untill fan comes on and keeps going out , I would think about not putting any more money in to this and get new if sounds as the heater has had its day ,

Dec 17, 2010 | Coleman Heating & Cooling

1 Answer

I HAVE A RUUD SILHOUETTE GAS FURNANCE. The pilot light keeps blowing out. When I light the pilot flame it seems to work perfectly at ignition. As the Manual instructs, I hold down the ignition switch for...


Short answer, yes. However you could have another problem. Replace the thermocouple that keeps the pilot lit. You can get a universal one at any good hardware or farm store. Make sure the new thermocouple is well into the pilot flame. If the blower knocks out the pilot flame again, I would be suspecting cross contamination from a crack in the heat exchanger. As the exchanger heats up, it may be causing a small crack to open and allows the blower to extinguish the flame. It may also be causing a leak of Carbon Monoxide into the heated room air. I would get it checked out very quickly.

Mar 07, 2010 | Ruud UBHC Air Conditioner

1 Answer

Heat comes on with ac cooling


what type of unit do you have fleet wood monaco ? useually this is a bad ground problem in a trailor motor home useually low voltage dc problem

Jul 21, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Furnace sometimes will not stay lit


Check the heat exchanger for a crack or hole. The room air blower is blowing back into the heat exchanger extinguishing the flame. Have it checked out today. Did you get it checked yet? Now. Have I stressed to you to get it checked out yet or have you been overcome by Carbon Monoxide yet?

Dec 10, 2008 | Carrier XHB123D X/Y Series Heat/Cool Air...

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